microsoft.quantum.arrays.prefixes.md

uid	title	ms.date	ms.topic	qsharp.kind	qsharp.namespace	qsharp.name	qsharp.summary
Microsoft.Quantum.Arrays.Prefixes	Prefixes function	7/28/2023 12:00:00 AM	managed-reference	function	Microsoft.Quantum.Arrays	Prefixes	Given an array, returns all its prefixes.

Prefixes function

Warning

This documentation refers to the Classic QDK, which has been replaced by the Modern QDK.

Please see https://aka.ms/qdk.api for the API documentation for the Modern QDK.

Namespace: Microsoft.Quantum.Arrays

Package: Microsoft.Quantum.Standard

Given an array, returns all its prefixes.

function Prefixes<'T> (array : 'T[]) : 'T[][]

Description

Returns an array of all prefixes, starting with an array that only has the first element until the complete array.

Input

array : 'T[]

An array of elements.

Output : 'T[][]

Type Parameters

'T

The type of array elements.

Example

let prefixes = Prefixes([23, 42, 144]);
// prefixes = [[23], [23, 42], [23, 42, 144]]