[Issue 18629] std.algorithm.iteration.subsitute is slow

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18629

John Colvin <john.loughran.colvin at gmail.com> changed:

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                 CC|                            |john.loughran.colvin at gmail.
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--- Comment #1 from John Colvin <john.loughran.colvin at gmail.com> ---
Created attachment 1684
  --> https://issues.dlang.org/attachment.cgi?id=1684&action=edit
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