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template<class ForwardRange, class UnaryPredicate, class Value> ForwardRange& replace_if(ForwardRange& rng, UnaryPredicate pred, const Value& with_what); template<class ForwardRange, class UnaryPredicate, class Value> const ForwardRange& replace_if(const ForwardRange& rng, UnaryPredicate pred, const Value& with_what);
replace_if
replaces every
element x
in rng
for which pred(x) == true
with with_what
.
Returns a reference to rng
.
Defined in the header file boost/range/algorithm/replace_if.hpp
ForwardRange
is a model
of the Forward Range
Concept.
ForwardRange
is mutable.
UnaryPredicate
is a
model of the PredicateConcept
ForwardRange
's value
type is convertible to UnaryPredicate
's
argument type.
Value
is convertible
to ForwardRange
's value
type.
Value
is a model of
the AssignableConcept
.
Linear. replace_if
performs
exactly distance(rng)
applications of pred
,
and at most distance(rng)
assignments.