grppi/0.3.1/stream__filter_8h_source.html

 #ifndef GRPPI_STREAM_FILTER_H
 #define GRPPI_STREAM_FILTER_H

 #include "common/patterns.h"

 namespace grppi {

 template <typename Predicate>
 auto keep(Predicate && predicate_op)
 {
   return filter_t<Predicate>{std::forward<Predicate>(predicate_op)};
 }

 template <typename Predicate>
 auto discard(Predicate && predicate_op)
 {
   return keep([&](auto val) { return !predicate_op(val); });
 }

 }

 #endif
grppi::keep
auto keep(Predicate &&predicate_op)
Invoke Filter pattern on a data stream that can be composed in other streaming patterns. This function keeps in the stream only those items that satisfy the predicate.
Definition: stream_filter.h:47

grppi
Definition: callable_traits.h:26

grppi::discard
auto discard(Predicate &&predicate_op)
Invoke Filter pattern on a data stream that can be composed in other streaming patterns. This function discards from the stream those items that satisfy the predicate.
Definition: stream_filter.h:63

grppi::filter_t
Representation of filter pattern. Represents a filter that can be used as a stage on a pipeline...
Definition: filter_pattern.h:33

patterns.h