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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

Name	Description
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.