View source code
Display the source code in std/uni.d from which this page was generated on github.
Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

Function std.uni.graphemeStride

Computes the length of grapheme cluster starting at index. Both the resulting length and the index are measured in code units.

size_t graphemeStride(C) (
  scope const C[] input,
  size_t index
) pure @safe
if (is(C : dchar));


C type that is implicitly convertible to dchars
input array of grapheme clusters
index starting index into input[]


length of grapheme cluster


writeln(graphemeStride("  ", 1)); // 1
// A + combing ring above
string city = "A\u030Arhus";
size_t first = graphemeStride(city, 0);
assert(first == 3); //\u030A has 2 UTF-8 code units
writeln(city[0 .. first]); // "A\u030A"
writeln(city[first .. $]); // "rhus"


Dmitry Olshansky


Boost License 1.0.