On 21 May 2017 at 10:36, Daniel Boles wrote: > I still occasionally find myself reflexively std::move()ing strings into > glibmm/gtkmm functions that I unconsciously see as taking ownership of > their arguments - only to realise it makes no difference because all of > them take strings as const&. > > This made me wonder whether there are any cases where, if the user > instructs so by using std::move(), glibmm/gtkmm functions could steal the > string [ or at least it's c_str() ] and thus avoid having to copy it. All > those copies quickly add up to a lot. >
You can't steal the contents of a std::string without access to its internals, which only the standard library has. You can't steal the c_str() ... I'm not even sure what that would mean.
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