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Example

The following code fragment replaces all of the numbers in a range with their absolute values, using the standard library function fabs. There is no need to use a pointer_to_unary_function adaptor in this case.

transform(first, last, first, fabs);

The following code fragment replaces all of the numbers in a range with the negative of their absolute values. In this case we are composing fabs and negate. This requires that fabs be treated as an adaptable unary function, so we do need to use a pointer_to_unary_function adaptor.

transform(first, last, first, compose1(negate, ptr_fun(fabs)));


Description | Standard Template Library Programmer`s Guide | Definition







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