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