id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
11663,No way to query file extension without allocating memory,matthew.chaplain@…,Beman Dawes,"the function .extension() returns an fs::path, containing a fresh string that contains the extension.  On certain library implementations that don't implement the SSO -- or, I guess, for files with very long extensions -- there will be a memory allocation each time the function is called.

That means that for solutions implementing search-by-extension such as is written in:

http://stackoverflow.com/questions/11140483/how-to-get-list-of-files-with-a-specific-extension-in-a-given-folder

there could be hundreds of memory allocations for just iterating a directory structure.  IMO, there really shouldn't be.

I propose adding the function bool path::has_extension(string const&) which can compare the extension in a memory-friendly way.",Feature Requests,assigned,To Be Determined,filesystem,Boost 1.57.0,Optimization,,,