View source code
Display the source code in std/encoding.d from which this page was generated on
github.
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.
Page wiki
View or edit the community-maintained wiki page associated with this page.
Function std.encoding.codePoints
Returns a foreachable struct which can bidirectionally iterate over all code points in a string.
The input to this function MUST be validly encoded.
This is enforced by the function's in-contract.
You can foreach either
with or without an index. If an index is specified, it will be initialized
at each iteration with the offset into the string at which the code point
begins.
Prototype
CodePoints!E codePoints(E)( immutable(E)[] s );
Supersedes
This function supersedes std.utf.decode().
Standards
Unicode 5.0, ASCII, ISO-8859-1, ISO-8859-2, WINDOWS-1250, WINDOWS-1252
Parameters
| Name | Description |
|---|---|
| s | the string to be decoded |
Examples
string s = "hello world"; foreach(c;codePoints(s)) { // do something with c (which will always be a dchar) }
Note that, currently, foreach(c:codePoints(s)) is superior to foreach(c;s)
in that the latter will fall over on encountering U+FFFF.
Example
string s = "hello"; string t; foreach(c;codePoints(s)) { t ~= cast(char)c; } assert(s == t);
Authors
Janice Caron