Vorlage:par pred2 eq

|- class="t-par" | | - | binary predicate which returns ​true if the elements should be treated as equal.
The signature of the predicate function should be equivalent to the following:

bool pred(const Type1 &a, const Type2 &b);

The signature does not need to have const &, but the function must not modify the objects passed to it.
requirement not defined

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