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true (value)
The true value is a boolean type value that is non-zero. It is the only alternative of the boolean false. Both data and methods can use the value true as a test or flag value.
Suppose we want to attach the image pointer image to CImage object I. The example below shows 2 equivalent ways to test the returned value:
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bSuccess = I:Attach( image ) |
-- returns true if the image is attached. |
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if ( bSuccess ~= true ) then Exit() end |
-- exit if bSuccess is not true |
Alternatively, the same result is accomplished by the following code:
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bSuccess = I:Attach( image ) |
-- returns true if the image is attached. |
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if ( not bSuccess ) then Exit() end |
-- exit if bSuccess is not true |