string::copy

`string::copy`

Copy a substring to another string.

std::size_t
copy(
    char* dest,
    std::size_t count,
    std::size_t pos = 0) const;

Copies std::min(count, size() - pos) characters starting at index pos to the string pointed to by dest.

This function doesn’t put the null terminator after the copied characters.

The number of characters copied.

Name Description

Name	Description
`count`	The number of characters to copy.
`dest`	The string to copy to.
`pos`	The index to begin copying from.

count

The number of characters to copy.

dest

The string to copy to.

pos

The index to begin copying from.

Type Thrown On

Type	Thrown On
`boost::system::system_error`	`pos >` `max_size()`.

boost::system::system_error