Menu
Search

API Documentation

version 2.088.0

overview

View source code
Display the source code in std/algorithm/searching.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.

Function std.algorithm.searching.minElement

Iterates the passed range and returns the minimal element. A custom mapping function can be passed to map. In other languages this is sometimes called argmin.

auto auto minElement(alias map, Range) (
  Range r
)
if (isInputRange!Range && !isInfinite!Range);

auto auto minElement(alias map, Range, RangeElementType) (
  Range r,
  RangeElementType seed
)
if (isInputRange!Range && !isInfinite!Range && !is(CommonType!(ElementType!Range, RangeElementType) == void));

Complexity

O(n) Exactly n - 1 comparisons are needed.

Parameters

NameDescription
map custom accessor for the comparison key
r range from which the minimal element will be selected
seed custom seed to use as initial element

Returns

The minimal element of the passed-in range.

See Also

maxElement, min, minCount, minIndex, minPos

Example

import std.range : enumerate;
import std.typecons : tuple;

writeln([2, 7, 1, 3].minElement); // 1

// allows to get the index of an element too
writeln([5, 3, 7, 9].enumerate.minElement!"a.value"); // tuple(1, 3)

// any custom accessor can be passed
writeln([[0, 4], [1, 2]].minElement!"a[1]"); // [1, 2]

// can be seeded
int[] arr;
writeln(arr.minElement(1)); // 1

Authors

Andrei Alexandrescu

License

Boost License 1.0.