17-Feb-2013 01:36, MrAppleseed пишет:
On Saturday, 16 February 2013 at 20:33:15 UTC, FG wrote:
On 2013-02-16 21:22, MrAppleseed wrote:
auto reg = regex("[ 0-9a-zA-Z.*=+-;()\"\'\[\]<>,{}^#/\\]");
When I try to run the code above, I get:
parser.d(64): Error: undefined escape sequence \[
parser.d(64): Error: undefined escape sequence \]
When I remove the escaped characters (turning my regex into
"[ 0-9a-zA-Z.*=+-;()\"\'[]<>,{}^#/\\]"), I get no issues compiling or
linking.
Like others noted the problem is 2-fold:
- escaping special characters (both as D string literla and regex
escaping itself). So just use `` or r"" or some form of WYSIWYG string
*AND* do escaping for things that are part of regex syntax.
- [] are used for nesting, as std.regex supports set-wise operations
inside of [...] character class e.g.
[[A-Z]&&[A-D]]
means intersection and would yield a set of [A-D]. It gets more useful
with Unicode character sets.
--
Dmitry Olshansky
