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GoFiler Legato Script Reference
Legato v 1.4j Application v 5.22b
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Chapter Three — Data Types and Operators (continued)
Unary operators apply in two general manners: pre/post-fix style to increment or decrement a variable and logical math types.
3.18.1 The ‘++’ and ‘--’ Operators
The ++ and -- operators will either increment or decrement an integer variable either before or after evaluation. If set as a prefix, ++i, the value of i will have 1 added and that value will be used in further operations within the statement while i++, the value of i will have 1 added and the remainder of the expression will use the original value of i.
These operators are a convenient method of incrementing counters and indices during loops.
3.18.2 The ‘~’, ‘!’ and ‘-’ Operators
The ~ , ! and - operators can be used as a prefix to either invert, specify a logic NOT or make negative.
Note: A known issue in Legato 1.x parse is leading unary operators on functions do not work since functions are currently loosely typed. Further, -nnn does not work correctly on parameter items following the first parameter. There are work arounds for both conditions by force coding such as (-1) instead of -1.
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