basic_file::resize (1 of 2 overloads)

Alter the size of the file.

void resize(
    uint64_t n);

This function resizes the file to the specified size, in bytes. If the current file size exceeds n then any extra data is discarded. If the current size is less than n then the file is extended and filled with zeroes.

Parameters

n: The new size for the file.

Exceptions

asio::system_error: Thrown on failure.