Conditional structures: Difference between revisions
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In an iff() expression, only one of true_expr or false_expr will be evaluated, not both. |
In an iff() expression, only one of true_expr or false_expr will be evaluated, not both. |
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Phix has some rudimentary support of preprocessor ifdef statements, but their use is discouraged |
Phix has some rudimentary support of preprocessor ifdef statements, but their use is discouraged since |
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they are quite unnecessary in Phix, for example in the following no code whatsoever is emitted for the |
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first if statement, and in the second the conditions are evaluated at compile-time and code is only |
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emitted for one of the branches. |
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<lang Phix>constant DEBUG=false |
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if DEBUG then |
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puts(1,"debug is on\n") |
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end if |
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if platform()=WINDOWS then |
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puts(1,"this is windows\n") |
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elsif platform()=LINUX then |
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puts(1,"this is linux\n") |
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end if</lang> |
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===switch=== |
===switch=== |
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