Re: Finding position of a value in an array

[Steven Schveighoffer via Digitalmars-d-learn]

On 12/30/19 6:15 PM, JN wrote:
On Sunday, 29 December 2019 at 08:31:13 UTC, mipri wrote:

int i = a.countUntil!(v => v == 55);
assert(i == 2);

I also had to ask because I couldn't find it. In other languages it's 
named "index()", "indexOf()" or "find()". D is the only language I know 
which uses the "countUntil" scheme. And even so it's not obvious from 
the name if it's the index of the element or number of preceding elements.


indexOf used to be in std.algorithm I believe. It was nixed for having 
too simple an implementation I believe.

I have also created a bufref library [1] which is intended to help with 
using phobos algorithms and not losing the positional information.

import std.stdio;
import std.algorithm;
import bufref;

void main()
{
    string x = "hello, world!";
    writeln(x.bwin.find('o').bufRef.pos);
}

-Steve

[1] http://code.dlang.org/packages/bufref