Logo

Programming-Idioms

History of Idiom 20 > diff from v8 to v9

Edit summary for version 9 by :
↷

Version 8

2015-08-20, 10:48:55

Version 9

2015-08-20, 15:51:26

Idiom #20 Return two values

Implement a function search which looks for item x in a 2D matrix m.
Return indices i, j of the matching cell.
Think of the most idiomatic way in the language to return the two values at the same time.

Idiom #20 Return two values

Implement a function search which looks for item x in a 2D matrix m.
Return indices i, j of the matching cell.
Think of the most idiomatic way in the language to return the two values at the same time.

Imports 
import std.typecons;
Code 
auto search(int[][] m, int x)
{
	foreach (i, row; m)
	{
		foreach (j, cell; row)
		{
			if (cell == x)
				return tuple(i, j);
		}
	}
}