std::experimental::filesystem::exists

 

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Defined in header <experimental/filesystem>
bool exists( file_status s ) noexcept;	(1)	(filesystem TS)
bool exists( const path& p );	(2)	(filesystem TS)
bool exists( const path& p, error_code& ec ) noexcept;	(3)	(filesystem TS)

Checks if the given file status or path corresponds to an existing file or directory.

1) Equivalent to status_known(s) && s.type() != file_type::not_found.

2) Equivalent to exists(status(p)).

3) Equivalent to exists(status(p, ec)). Returns false and sets ec to an appropriate error code if an error occurs. Otherwise, ec is cleared with a call to ec.clear().

Parameters

s	-	file status to check
p	-	path to examine
ec	-	error code to store the error status to

Return value

true if the given path or file status corresponds to an existing file or directory, false otherwise.

Exceptions

1,3)

noexcept specification:  

noexcept

  

2) filesystem_error if an error occurs. The exception object is constructed with p as an argument. The error code is set to an appropriate error code for the error that caused the failure.