phobos and splitting things... but not with whitespace.

[simendsjo]

On Sat, 23 Jun 2012 18:56:24 +0200, simendsjo <simendsjo at gmail.com> wrote:

> On Sat, 23 Jun 2012 18:50:05 +0200, Chad J  
> <chadjoan at __spam.is.bad__gmail.com> wrote:
>
>> Looking for findSplit?  
>> http://dlang.org/phobos/std_algorithm.html#findSplit
>>  Cool, that's what I want!
>>  Now if I could find the elegant way to remove exactly one line from  
>> the text without scanning the text after it...
>
> Isn't that exactly what findSplit does? It doesn't have to search the  
> rest of the string after the match, it just returns a slice of the rest  
> of the array (I guess - haven't read the code)


import std.stdio, std.algorithm;

void main() {
     auto text = "1\n2\n3\n4";
     auto res = text.findSplit("\n");

     auto pre = res[0];
     assert(pre.ptr == text.ptr); // no copy for pre match

     auto match = res[1];
     assert(match.ptr == &text[1]); // no copy for needle

     auto post = res[2];
     assert(post.ptr == &text[2]); // no copy for post match
     assert(post.length == 5);
}