R2 Data Types

R2 defines the following basic data types:

• Integer: an integer number between 0 and $FFFFFFFF. This can be entered in decimal (1652) or hex ($674) notation. Negatives are entered with the high-bar (¯5).
• Floating point: a floating point number, or an integer greater than $FFFFFFFF, entered in decimal notation (12.7). Negatives are entered with the high-bar (¯1.8).
• Character: a single character, enclosed in single quotes (eg 'A').
• String: a collection of characters treated as a unit, enclosed in double quotes (eg "Hello world").
• Null: a zero-length, or empty, scalar. Entered with the symbol «.

In addition to these simple types, there are also two array types:

• Character vector: a collection of characters treated as an array, enclosed in single quotes (eg 'R2 is great').
• Array: a collection of any data, enclosed in square brackets (eg [1 3 'hello world' [17 "Blenheim Ave."] 47]). An array can be infinitely deep (by containing other arrays).

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