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Function `std.encoding.index`

Returns the array index at which the (n+1)th code point begins.


						
				ptrdiff_t index(E)
				(
				

				  const(E)[] s,
				

				  int n
				

				);

The input to this function MUST be validly encoded. This is enforced by the function's in-contract.

Supersedes

This function supersedes std.utf.toUTFindex().

Standards

Unicode 5.0, ASCII, ISO-8859-1, ISO-8859-2, WINDOWS-1250, WINDOWS-1251, WINDOWS-1252

Parameters

Name	Description
s	the string to be counted
n	the current code point index

Example

writeln(index("\u20AC100", 1)); // 3
writeln(index("hällo", 2)); // 3

Authors

Janice Caron

License

Boost License 1.0.