Chapter 2 The DynaScript Language

Literals

Literals are fixed values in your scripts. For example, the following are literals:

• 123 , 0x3F , 0123 (integers)
• 456.789 , 3.2e-8 (floating-point numbers)
• true or false (Boolean)
• "The rain in Spain" (string)

Integers

Integers can be expressed as:

• decimal (base 10) - a sequence of digits (0-9) without a leading zero.
  Example: 189
  
• octal (base 8) - a sequence of digits (0-7) with a leading zero.
  Example: 0123
  
• hexadecimal (base 16) - a sequence of digits (0-9) and letters (A-F or a-f), with a leading 0x (or 0X).
  Example: 0x3F
  

Floating-point numbers

A floating-point number can have:

• a decimal integer
• a decimal point (".")
• a decimal fraction
• an exponent ("e" or "E" followed by an signed or unsigned integer)

Examples:

• 123.456
• -123E456
• .123e-456

Booleans

The Boolean (logical) type can be true or false .

Strings

A string is zero or more characters enclosed in single (') or double (") quotes. You must use the same kind of quote (single or double) to start and end a given string.

Examples:

• 'Dave'
• "HAL"
• "9000"
• "Check out our \n new line of clothes."

Control characters

You can embed the following control characters in strings:

• \b backspace
• \f form feed
• \n new line
• \r carriage return
• \t tab

Escaping characters

You can place quotes inside of strings by preceding them with a backslash (an escape character).

For example:

document.WriteLn("He played \"Stairway To Heaven\" at 78 RPM.")

would yield:

He played "Stairway To Heaven" at 78 RPM.

You can insert a backslash itself by using two backslashes (one as the escape character, one as the literal backslash).

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