Literals

A literal is a constant. It is "taken literally" by Iotellect - the system just takes it as it is, and uses it as a basis for calculations, etc. It is a constant value.

Iotellect Expression Language defines several types of literals:

• Null Literal: null

• Boolean Literals: true or false

• Decimal Literals (0, 1, 123, -1234567890, ...)

• Hexadecimal Literals (0x0A, 0xFFFF, ...)

• Binary Literals (0b01, 0b00110011)

• Octal Literals (00, 055, 01234567, ...)

• Floating Point Literals (3.1, -44.5, 1.3E12, ...)

• String Literals ("This is a String", 'test', ...)

Backslashes (\) that appear within strings must be escaped using another backslash (i.e. becomes \\).

Example: "A string with a single backslash: \\"

Quotes must be also escaped using backslash character (" , ') if the same type of quotes was used to quote the string.

Examples:

• "There are double quotes \"inside\" this string"

• 'There are single quotes \'inside\' this string'

A character preceded by a backslash () is an escape sequence and has special meaning. The following table shows the escape sequences:

Unicode characters can be inserted into a string literal by using the following syntax construction: \uhhhh

For example, to insert a Unicode character with hexadecimal code 90FA use the following syntax: \u90FA

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