https://issues.dlang.org/show_bug.cgi?id=14386
Issue ID: 14386 Summary: add setOrGet to AA Product: D Version: unspecified Hardware: All OS: All Status: NEW Severity: enhancement Priority: P1 Component: druntime Assignee: nob...@puremagic.com Reporter: c...@dawg.eu The function is called setdefault in python and getOrElseUpdate in Scala. Allows to lookup a key or set a value with a single hash. This is also possible in C++ using iterators. https://docs.python.org/2/library/stdtypes.html#dict.setdefault http://www.scala-lang.org/api/2.10.1-RC1/scala/collection/mutable/HashMap.html#getOrElseUpdate(A,⇒B):B Another primitive that could work here is getLValue, but it requires the value type to have a distinct null value, so it's less nice to work with. --