View source code
Display the source code in std/functional.d from which this page was generated on github.
Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

Template std.functional.not

Negates predicate pred.

template not(alias pred) ;

Contained Functions

NameDescription
not

Parameters

NameDescription
pred A string or a callable

Returns

A function which calls pred and returns the logical negation of its return value.

Example

import std.algorithm.searching : find;
import std.functional;
import std.uni : isWhite;
string a = "   Hello, world!";
writeln(find!(not!isWhite)(a)); // "Hello, world!"

Authors

Andrei Alexandrescu

License

Boost License 1.0.