std::filesystem::directory_entry::file_size

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C++
 
Filesystem library
Classes
Functions
File types
 
std::filesystem::directory_entry
directory_entry::file_size
(until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)
 
std::uintmax_t file_size() const;
std::uintmax_t file_size( std::error_code& ec ) const noexcept;
 (since C++17)

If the file size is cached in this directory_entry, returns the cached value. Otherwise, returns std::filesystem::file_size(path()) or std::filesystem::file_size(path(), ec), respectively

Parameters

ec - out-parameter for error reporting in the non-throwing overload

Return value

The size of the referred-to filesystem object

Exceptions

The overload that does not take a std::error_code& parameter throws filesystem_error on underlying OS API errors, constructed with p as the first path argument and the OS error code as the error code argument. The overload taking a std::error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. Any overload not marked noexcept may throw std::bad_alloc if memory allocation fails.

Example

This section is incomplete
Reason: no example

See also

(C++17)
 returns the size of a file
(function)
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