Please also refer to appendix IV, “Syntax and Semantics.”
t List of Data Types *517*
boolean
integer
list
macintosh
none
null
real
string
undefined
t Descriptions *517*
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boolean
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Values: TRUE | FALSE
Description: Generated by any boolean primitive (for example, <, =, string?), if it has an output. Note that without an output, such an operation either succeeds or fails.
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integer *518*
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Values: from -2,147,483,648 to 2,147,483,647
Description: The following belong to this type:
o a decimal
o any number base (indicated as base#) from 2 to 32
o a 1,2,4 byte ASCII
Examples: 123 | 8#173 | 'a' | 'EQ' | 'STR'
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list *518*
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Values: (<any> ......) with up to 65,535 elements in the interpreter, 4,294,967,295 in the compiler.
Examples: () | (a b (c (d))) | (a 123 TRUE)
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macintosh *518*
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Values: {vertical horizontal} | {top left bottom right} | <MacType>
Description: {vertical horizontal} is of type Point and {top left bottom right} is of type Rect. Vertical, horizontal, top, left, bottom, and right are of type integer.
MacType denotes any supported Macintosh type (such as MacType[@[@]address]).
Description: Generated by Prograph when a terminal with no datalink attached is encountered during execution. This value is not accumulated on a List root of a calling repeat operation.
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null *519*
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Values: NULL
Description: Default value on a newly created attribute, persistent, constant, or match; produced by Prograph search primitive when the search has been unsuccessful.
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real *519*
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Values: from -1.1E4932 to 1.1E4932
Description: The following belong to this type:
o a decimal
o an exponential
Examples: 1.2 | 1.80445227 E-1 | 2.0E3
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string *519*
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Values: any string of typeable characters, up to 65,535 long in the interpreter, 4,294,967,295 in the compiler.
Examples: Hello | "This is a string"
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undefined *519*
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Values: UNDEFINED
Description: Generated by Prograph when an operation is skipped during execution.