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33 lines
1.3 KiB
Plaintext
33 lines
1.3 KiB
Plaintext
{{QBDLDATE:07-31-2022}}
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{{QBDLTIME:23:39:01}}
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The [[$NOPREFIX]] metacommand allows all QB64 functions and statements to be used without the leading underscore (_).
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{{PageSyntax}}
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:[[$NOPREFIX]]
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{{PageDescription}}
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* QB64-specific keywords are by default prefixed with an underscore, in order to differentiate them from legacy keywords inherited from QBasic/QuickBASIC 4.5.
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* The convention exists in order to allow older code to be loaded and compiled in QB64 without naming conflicts with existing variables or constants.
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* If you are writing new code with QB64, and not importing code from QBasic/QuickBASIC 4.5, [[$NOPREFIX]] allows you to reduce typing by not having to use underscores in modern keywords.
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* '''SUB _GL''' still must be prefixed.
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* When [[$NOPREFIX]] is used, QB64 keywords can be used both with or without the leading underscore, so that both [[_DISPLAY]] and [[_DISPLAY|DISPLAY]] are valid in the same program, for example.
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* [[$NOPREFIX]] must be the first non-comment and non-whitespace line in a program.
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** Since QB64 2.0 respectively QBPE 0.5 [[$NOPREFIX]] can be placed anywhere in a program.
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{{PageAvailability}}
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* '''QB64 1.4 and up''' (QB64 Team)
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* '''QBPE 0.5 and up''' (QB64 Phoenix Edition)
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{{PageSeeAlso}}
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* [[Keyword Reference - Alphabetical]]
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* [[Metacommand]]
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{{PageNavigation}}
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[[Category:Latest]]
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