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    Mama Reference

    Contents

    Mama classes

    • Animation - represents animation
    • ArgException - Error in number of parameters passed in call to a function
    • AssertException - assert condition is false
    • Audio - represents audio file
    • BaseException - base exception for Mama exceptions
    • Boolean - boolean type may assigned one of two values - true or false
    • Button - represents button in a graphic window
    • CallStack - represents the call stack, which contains current function/method call chain
    • Checkbox - represents check box in a graphic window
    • Class - this class provides reflection capabilities - runtime type information (RTTI) - of objects
    • Code - represents mama code
    • Color - represents color in a graphic window
    • ComboBox - represents combo box in a graphic window
    • Complex - represents a complex number: a complex number is written as "a+bj," where a is the real part and b is the imaginary part.
    • Edit - represents edit box
    • Exception - general mama exception
    • ExitException - exit from mama exception, asked explicitly by user
    • FieldException - exception when accessing object field
    • File - represents a file: file may be of type text or binary, content may be written to a file and read from it
    • Font - represents font in a graphic window
    • Frame - represents a frame in the call stack (see also CallStack)
    • Function - represents a function
    • Globals - a class providing mama global services
    • GraphicException - graphic exception
    • IOBaseException - input/output base exception
    • Image - represents an image in a graphic window
    • ImportException - exception thrown when import module failed
    • Instance - represents an instance of a class in the program
    • Jclass - A class representing a Java class
    • KeyException - exception thrown when accessing an object in a table failed
    • Keyboard - Represents the keyboard
    • Label - represents a label in a graphic window
    • List - a list of mama objects of any type
    • ListBox - represents a list box in a graphic window
    • MathException - general math exception
    • Menu - represents a menu in a graphic window
    • Method - represents a class method
    • Module - represents a mama module
    • Mouse - Represents the mosue state
    • NameException - name not defined exception
    • NetException - exception thrown when accessing mama network services
    • Null - represents an empty (null) value
    • Number - represents a number: a number may be integer or real
    • Object - base class for all mama classes
    • Page - represents internet web page
    • Point - represents a point in a graphic window
    • RadioButton - represents a radio button in a graphic window
    • RangeException - a range exception
    • Slider - represents a slider in a graphic window
    • String - represents a string of chars
    • SyntaxException - syntax exception
    • System - represents mama system services
    • SystemException - general system exception
    • Table|Map - represents a table of objects, which are held as pairs of key and value.
    • Thread - represents a mama thread, which is an independent executing unit
    • ToolBar - represents a toolbar in a graphic window
    • Turtle - represents a turtle in a graphic window
    • TypeException - type exception
    • ValueException - value exception
    • WarningException - warning exception
    • WinBase - represents a basic graphic window
    • Window - represents a graphic window
    • ZeroDivException - thrown when dividing with 0


    Keywords

    help class input_bool while or
    input_number else remove input for
    define assert false print break
    if nop elif create import
    then continue inherits isA|is and
    include return this base repeat
    lambda catch rshift input_line method
    throw


    Operators

    .. %= % ** @
    += -- != >= <=
    > *= * >> /=
    = < ~ + **=
    | << / -=


    Error messages

    • <parameter> does not contain field '<parameter>'
      • Error class: FieldException
      • Possible fixes:
        1. Verify correct spell fo the field name
        2. Verify that a field with this name exists
    • <parameter> is an invalid argument to this function
      • Error class: TypeException
      • Possible fixes:
        1. Verify correct spelling of the argument name
    • <parameter> must be of class <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the variable is of the required type
        2. Verify correct spelling of the variable
    • A table is required for the format operation
    • Access to base class outside class methods
      • Error class: SyntaxException
      • Possible fixes:
        1. You can use the keyword '<parameter>' only inside a class method for accessing the base class method
    • Access to empty list
      • Error class: RangeException
      • Possible fixes:
        1. Verify that the list contains elements
        2. Run the program step by step to check the problem
    • Access to the list with out-of-range index
      • Error class: RangeException
      • Possible fixes:
        1. Check the index passed to the list and verify that it is less than the list size
    • Argument <parameter> for function <parameter> is out of range (<parameter>..<parameter>)
      • Error class: RangeException
      • Possible fixes:
        1. Check that the argument you pass to the function is inside the range it expects
    • Argument <parameter> is not <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check that argument <parameter> is <parameter>
        2. Check for spelling error
    • Argument <parameter> required in call to function instead of <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check that the required argument is passed to the function
        2. Are you using a wrong function name?
    • Argument <parameter> to operation '<parameter>' should be of type String
      • Error class: ArgException
      • Possible fixes:
        1. Verify that the argument is of String type
    • Argument <parameter>: required - <parameter>, found - <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check that the actual argument has same type as the formal argument
        2. Check for spelling error
    • Argument 1 should be a string, a code or a file
      • Error class: ArgException
      • Possible fixes:
        1. Verify that argument 1 is either a string, a code or a file
        2. Do you have a spell error in the argument name?
    • Assert requirement not satisfied
      • Error class: AssertException
      • Possible fixes:
        1. Check the assert condition
        2. Run the program step by step and find the cause for the assertion failure
    • Base class has no method named '<parameter>'
      • Error class: NameException
      • Possible fixes:
        1. Verify that the base class has a method with that name
        2. Check for misspelled method name
    • Boolean input operation failed: no boolean value in the input
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the user entered a valid boolean value, I.e. 'true' or 'false'
    • Call to undefined function: <parameter>
    • Cannot assign to <parameter>
      • Error class: SyntaxException
      • Possible fixes:
        1. In the assignment you have to verify that the operand you assign to is a variable - I.e. a valid memory address - and not <parameter>
    • Cannot assign to function: <parameter>
    • Cannot change a string object, it is immutable
      • Error class: TypeException
      • Possible fixes:
        1. A string object cannot be changed
    • Cannot compare '<parameter>' with '<parameter>' - types '<parameter>' and '<parameter>' are not comparable
      • Error class: TypeException
      • Possible fixes:
        1. Check the expression and verify that the compare is make between 2 comparable types
    • Cannot convert <parameter> to <parameter>
    • Cannot convert argument <parameter> into type <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. Check that there is a legal conversion from the original type to the destination type
    • Cannot convert from complex to <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. To convert a complex number z into a number, first convert to absolute value and then conert to a number like the following: <parameter>(<parameter>(z))
    • Cannot convert from complex to number
      • Error class: TypeException
      • Possible fixes:
        1. To convert from a complex number z into a number, do <parameter>(z)
    • Cannot convert from the given type into complex type
      • Error class: TypeException
      • Possible fixes:
        1. Check the expression and find why was there a conversion to a complex type
    • Cannot convert from the given type into type <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. Check that there is a legal conversion from the original type to the destination type
    • Cannot convert to <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. Check that there is a legal conversion from the original type to the destination type
        2. Check for spelling error in variable/type name
    • Cannot delete variable <parameter> due to references to it inside a nested namespace
    • Cannot do modulu operation on a complex number
      • Error class: ValueException
      • Possible fixes:
        1. Verify there is no modulu operation on complex numbrs as part of the expression
    • Cannot execute a power operation of 0 with a negative or complex number
      • Error class: ZeroDivException
      • Possible fixes:
        1. Check the exponent argument and verify it is not negative or complex
    • Cannot execute input/output operation on a closed file
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file is open before doing any input/output operation on it
    • Cannot find the module of the class <parameter>
    • Cannot find the module of the unnamed class
    • Cannot make augmented assign to a list
    • Cannot read object in binary mode from a string
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that a binary mode read is executed only on a file openned in binary mode.
    • Cannot write in binary mode into a string object
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that a binary mode write is executed only on a file openned in binary mode, or write in tex mode
    • Class <parameter> does not contain field <parameter>
      • Error class: FieldException
      • Possible fixes:
        1. Verify that the field name is spelled correct
        2. Verify that this field exists in the class
    • Constructor does not accept any arguments
      • Error class: ArgException
      • Possible fixes:
        1. Verify you don't pass any arguments to the constructor
    • Constructor requires arguments
      • Error class: ArgException
      • Possible fixes:
        1. You need to pass the required arguments to the constructor
    • Constructor should not return any value
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the constructor does not return a value
    • Conversion failed: a character is required
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the variable or expression you are trying to convert is convertible to character
        2. Trace the varibale/expression value by printing it
    • Conversion failed: a number required
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the variable/expression you are trying to convert is convertible to number
    • Conversion failed: integer type required
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the variable/expression is an integer number
        2. Run the program step by step and trace the variable values
    • Current thread interrupted before or during the wait for release by another thread
    • Current thread is not allowed to release synchronization lock of this object
      • Error class: SystemException
      • Possible fixes:
        1. Verify that the release of the synchronization is executed from within the correct thread
    • Current thread is not allowed to wait on the synchronization mechanism of this object
      • Error class: SystemException
      • Possible fixes:
        1. Verify that the wait is executed from within the correct thread
    • Division in 0
      • Error class: ZeroDivException
      • Possible fixes:
        1. The denominator value in the division operation is 0 - review the epxression and verify its correctness
    • Element <parameter> not found in the list
      • Error class: ValueException
      • Possible fixes:
        1. Verify that this element does exist in the list
        2. Run step by step and check the list contents at each step
    • Empty module name
      • Error class: ImportException
      • Possible fixes:
        1. Specify the module to import
    • Error accessing object field - the object is null
      • Error class: ValueException
      • Possible fixes:
        1. Make sure the object is created before you use it
    • Error accessing object field - the object is null: <parameter>
      • Error class: ValueException
      • Possible fixes:
        1. Make sure the object is created before you use it
    • Error accessing object function - the object is null
      • Error class: ValueException
      • Possible fixes:
        1. Make sure the object is created before you call its methods
    • Error accessing web page in address <parameter>
      • Error class: NetException
      • Possible fixes:
        1. Check the web address that was passed as argument and verfiy that it is valid and represents an existing web page
    • Error calling function '<parameter>': cannot convert argument <parameter> from <parameter> to type <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Review the call to the function and verify that you are passing the correct argument
    • Error deleting <parameter>
      • Error class: FieldException
      • Possible fixes:
        1. Verify correct spelling of the field name
        2. Verify existence of a field with this name
    • Error found in function <parameter>() in parameter <parameter>: required - <parameter> found <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check that the actual argument has same type as the formal argument
        2. Check for spelling error
    • Error in address <parameter>
      • Error class: NetException
      • Possible fixes:
        1. Check the resource address argument and verify it is valid
    • Error in argument <parameter> in function <parameter>: argument of type <parameter> required
      • Error class: ArgException
      • Possible fixes:
        1. Verify match between the actual and the formal type
        2. Verify correct spell of the argument
    • Error in argument count to function <parameter>(): expected at least - <parameter>, received - <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Verify a match between the number of arguments the function expects and the number of arguments passed to it
    • Error in number of arguments in call to the function
      • Error class: ArgException
      • Possible fixes:
        1. Check that the number of arguments passed to the function is equal to the number of declared arguments
    • Error in the escape code in the string
    • Error in the result value - not a number
      • Error class: ValueException
      • Possible fixes:
        1. The result value is invalid - review the epxression that caused this result
    • Error parsing the time string
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the argument is a string containing a valid time
    • Error running the program - module not found
      • Error class: SystemException
      • Possible fixes:
        1. Verify that the module name is correct
        2. Verify that the module exist as a file in the file system
    • Exit the program due to user request
    • Failed to load image folder <parameter>
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file name passed for loading the images is correct and that is exists in the file system
    • Failed to load image from file <parameter>
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file name passed for loading the image is correct and that it is an image file of type jpeg, gif or png.
    • Field <parameter> is read only
      • Error class: TypeException
      • Possible fixes:
        1. Cannot change this field - it is read only
    • Field '<parameter>' not found in this object
      • Error class: FieldException
      • Possible fixes:
        1. Verify correct spell of the field name
        2. Verify such a field exist in the object
    • File '<parameter>' not found
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file name is correct
        2. Verify that the file exist in the file system
    • File name <parameter> invalid
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file name contains legal characters in the operating system
    • File name empty
      • Error class: IOBaseException
      • Possible fixes:
        1. Check why the file name is empty
    • First argument - '<parameter>' - to the constructor should be an instance of this class
      • Error class: ArgException
      • Possible fixes:
        1. In case you called the consturcto explicitly, verify that object exists and that it is an instance of this class
    • First argument to method '<parameter>' must be an object
    • First argument to the constructor should be an object of this class
      • Error class: ArgException
      • Possible fixes:
        1. Verify that the first argument to the constructor is an object of this class
    • Function frame not found in call stack
    • General error in argument to function
    • General exception: <parameter>
    • General math error
      • Error class: MathException
      • Possible fixes:
        1. Review the math expression
    • General warning
    • Got infinite value
      • Error class: RangeException
      • Possible fixes:
        1. The result value is infinite - review the math expression that caused this result
    • Import failed: cannot find the module or the name not found in the module
      • Error class: ImportException
      • Possible fixes:
        1. Verify that the name you specified - a module or an identifier - is correct
        2. Verify that the module exists as a file in the file system
    • In delete operation the index list must be a list of subsequent integeres, e.g. (4, 5, 6, 7, 8)
      • Error class: RangeException
      • Possible fixes:
        1. Verify that the index list is a list of subsequent integeres
    • Incorrect code indentation
      • Error class: SyntaxException
      • Possible fixes:
        1. Verify correct indentation of the code in the given line
    • Incorrect syntax
      • Error class: SyntaxException
      • Possible fixes:
        1. Check the expression in the error line
        2. Verify valid and correct indentation of the code
    • Incorrect syntax: <parameter>
    • Incorrect value
    • Incorrect variable type: <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the variable is of the required type
        2. Verify correct spell of the variable name
    • Increment size must be of value greater than 0 in range definition
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the increment size is greater than 0 in range definition
    • Index is out of range: <parameter>
      • Error class: RangeException
      • Possible fixes:
        1. Verify that the index is within the valid range in this operation
        2. Check the program flow and find where the index went out of the valid range
    • Input exception - empty input
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the user has entered input as required by the program
        2. Try handling input errors by catching such an exception
    • Input of number failed: the input does not contain a number, or the number format is invalid
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the input contains a valid number
    • Input operation failed
      • Error class: IOBaseException
      • Possible fixes:
        1. Check a match between the data type you are expecting and the input content
    • Input operation failed - end of file
      • Error class: IOBaseException
      • Possible fixes:
        1. Trace the reads operations and verify correct match between the size of data you are trying to read and the size of data in the file
    • Input operation failed - user entered invalid number
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the input entered by the user contains a valid number
    • Input/output operation failed
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the input/output device name is correct
        2. Check for access rights to the specified file
    • Input/output operation failed: <parameter>
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the input/output file name is correct
        2. Check access rights to the specified file
    • Instruction '<parameter>' outside a loop
      • Error class: SyntaxException
      • Possible fixes:
        1. The instruction '<parameter>' is used to stop and exit the current executed loop. Verify that you are using this instruction inside a loop
    • Instruction '<parameter>' outside of a function
      • Error class: SyntaxException
      • Possible fixes:
        1. The instruction '<parameter>' is used to return a value from a function. Verify you are using this instruction from within a function, and not as a global code
    • Instruction '<parameter>' should be defined inside a loop
      • Error class: SyntaxException
      • Possible fixes:
        1. Instruction '<parameter>' is used for moving on to the next iteration in a loop - make sure you use this instruction inside a loop, and not outside
    • Internal error
      • Error class: SystemException
      • Possible fixes:
        1. A Mama internal error - please report us on this error at our website
    • Invalid character in the format operation <parameter> <parameter> at index <parameter>
      • Error class: ValueException
      • Possible fixes:
        1. Check the character at the specified index
    • Invalid class
      • Error class: SystemException
      • Possible fixes:
        1. Verify that the class exists and defined correctly
        2. Is the class name spelled correct?
    • Key <parameter> is not suitable for insertion into the table
      • Error class: KeyException
      • Possible fixes:
        1. The key you are trying to insert into the table cannot be compared with the existing keys in the table -verify it has the correct type
    • Key not found: <parameter>
      • Error class: KeyException
      • Possible fixes:
        1. Verify correct spelling of the key name
        2. Verify that a key with this name exits
    • Lexical parse error encountered at the current line: missing string closing quotes (") or comment closing quote (')
      • Error class: SyntaxException
      • Possible fixes:
        1. Check the program and verify match between openning and closing quotes
    • Methed called for null object
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the object you are accessing exits
    • Name '<parameter>' not defined
      • Error class: NameException
      • Possible fixes:
        1. Verify correct spell of the name
        2. Verify that the name was defined before usage
        3. Did you forget to include/import the correct file?
    • No function or field with such a name in type '<parameter>'
      • Error class: FieldException
      • Possible fixes:
        1. Verify correct spell of the field name
        2. Verify such a field exist in the object
    • No module named '<parameter>' exist
      • Error class: ImportException
      • Possible fixes:
        1. Verify valid name of the module
        2. Verify that the module exists as a file in the file system
    • No standard output object in the system
    • No-arguments '<parameter>' must be last in the 'catch' list
      • Error class: SyntaxException
      • Possible fixes:
        1. You have to put the no-arguments '<parameter>' last in the 'catch' list, because it catches all exceptions
    • Not all arguments converted
      • Error class: TypeException
      • Possible fixes:
        1. Check again the format string and the arguments
    • Not enough arguments received at the format operation
      • Error class: ArgException
      • Possible fixes:
        1. Verify a match between the number of arguments and the number of specifed arguments
    • Operation '<parameter>' failed - an integer number required
      • Error class: ValueException
      • Possible fixes:
        1. The number should be integer in order to complete this operation
    • Operation failed - the expression value is negative - an integer required with non-negative value
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the expression value is non-negative
    • Operator '<parameter>' not defined for type '<parameter>'
      • Error class: TypeException
      • Possible fixes:
        1. Verify correct spell of the object name, and that it is of the correct type
    • Operator '<parameter>' not defined for types '<parameter>' and '<parameter>'
      • Error class: TypeException
      • Possible fixes:
        1. Verify correct spell of the object names, and that they are of the correct type
    • Ouptut operation failed
      • Error class: IOBaseException
      • Possible fixes:
        1. Check the output file and the data you are trying to write
    • Out of memory
      • Error class: SystemException
      • Possible fixes:
        1. From some reason the program is out of memory - verify you have no huge data structures in the porgram (e.g. list or table huge size)
        2. Verify that the program is not inside an infinite loop
    • Parameter <parameter> should be <parameter> or <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check that the actual argument is one of the types the function is expecting
        2. Check for spelling error
    • Read of object form file failed
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file you are reading from does contain a Mama object
    • Reduction on an empty list without an initial value
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the list passed as an argument to the reduction function is not empty, or there exists an initial value
    • Run of function <parameter> on an empty list
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the list is not empty
    • Saving window content as image failed
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the given file name is valid
        2. Verify you have write access to the folder where you are saving the window as image
    • Sleep was interrupted due to keyboard key press
    • The Mama version of module <parameter> does not suit current version: current version=<parameter>, module version=<parameter>
      • Error class: ImportException
      • Possible fixes:
        1. If you have the source file of the module, delete the compile file (with extension .mamac) so that mama will re-compile the file
    • The argument should be an integer
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the argument is integer
    • The argument string in the method <parameter>() is empty
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the argument string contains some characters
    • The assigned value must be a list
    • The base in the conversion operation is invalid
      • Error class: ValueException
      • Possible fixes:
        1. The base in the conversion to integer should be between 2 and 36
    • The field is read only
      • Error class: TypeException
      • Possible fixes:
        1. You cannot change a field in a code object
    • The file does not contain a Mama object
      • Error class: IOBaseException
      • Possible fixes:
        1. Verify that the file you are reading from does contain a Mama object
    • The given index list argument contains a value outside the given list range. The wrong value is at index <parameter>
      • Error class: RangeException
      • Possible fixes:
        1. Check the index list and verify that all of its values are within the given list range
    • The index of this operation should be an integer
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the index has an integer value
    • The mapping function requires at least 2 arguments
      • Error class: TypeException
      • Possible fixes:
        1. Verify that you are passing at least 2 arguments to the mapping function
    • The path '<parameter>' passed as argument is not a valid folder in the file system, or there are no access rights to this folder
      • Error class: SystemException
      • Possible fixes:
        1. Verify that the argument is a valid folder in the file system
        2. Verify that you have read rights form that folder
    • The precision field in the format string is too big
      • Error class: RangeException
      • Possible fixes:
        1. Specify a lower precision value
    • The program file <parameter> has a wrong format
      • Error class: BaseException
      • Possible fixes:
        1. Check that program file exits and has the correct format
    • The return value from function <parameter>() should be of type <parameter>
      • Error class: TypeException
      • Possible fixes:
        1. Verify you are returning a value of the specified type
        2. Did you forget to return a value from the function?
    • The step in the range definition for this operation must be 1
    • The step in the range definition is not an integer
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the step in the range definition is an integer
    • The step passed in the range definition is 0
      • Error class: ValueException
      • Possible fixes:
        1. Check the step argument (third) in the range definition and verify it is not 0
    • The string is not suit for the format operation: <parameter>
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the string contains suiltable content for the format operation
    • The string is not suitable for the conversion: <parameter>
      • Error class: ValueException
      • Possible fixes:
        1. Verify that the string contains valid data for the conversion
    • The turtle is not bounded to any window
      • Error class: GraphicException
      • Possible fixes:
        1. You have to create window and add the turtle to it before any graphic operation on the turtle
    • There is no exception to re-throw
      • Error class: ValueException
      • Possible fixes:
        1. You can re-throw exception from only within an exception catch block
    • This argument should contain a single character
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the argument contains a single chararcter
    • This type is unhashable
    • Too many arguments passed to function <parameter> - expected: <parameter>, received: <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check the function declaration and find the extra arguments
    • Tried to pop and item from an empty table
      • Error class: KeyException
      • Possible fixes:
        1. Check the program flow by runnig step by step while watching the table content
        2. Verify that elements were inserted into the table
    • User defined comparison function must return a number
      • Error class: TypeException
      • Possible fixes:
        1. Verify that the user defined compare function returns a number
    • Wrong arguments number in call to function <parameter>() - required at least: <parameter>, received: <parameter>
      • Error class: ArgException
      • Possible fixes:
        1. Check the function declaration and find the missing arguments in the call
    • Wrong in list definition
      • Error class: TypeException
      • Possible fixes:
        1. Check the list definition
    • Wrong list definition - the length is too long
      • Error class: ValueException
      • Possible fixes:
        1. Check the length and verify it matches the list length
    • Wrong list definition - the length is too short
      • Error class: ValueException
      • Possible fixes:
        1. Check the length and verify it matches the list length