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Function std.algorithm.sorting.topNCopy

Copies the top n elements of the input range source into the random-access range target, where n = target.length. Elements of source are not touched. If sorted is true, the target is sorted. Otherwise, the target respects the heap property.

TRange topNCopy(alias less, SRange, TRange) (
  SRange source,
  TRange target,
  SortOutput sorted = No.sortOutput
)
if (isInputRange!SRange && isRandomAccessRange!TRange && hasLength!TRange && hasSlicing!TRange);

Parameters

NameDescription
less The predicate to sort by.
source The source range.
target The target range.
sorted Whether to sort the elements copied into target.

Returns

The slice of target containing the copied elements.

Example

import std.typecons : Yes;

int[] a = [ 10, 16, 2, 3, 1, 5, 0 ];
int[] b = new int[3];
topNCopy(a, b, Yes.sortOutput);
writeln(b); // [0, 1, 2]

Authors

Andrei Alexandrescu

License

Boost License 1.0.