Method Stdio.Buffer()->try_output()

Method try_output

int(-1..) try_output()

Description

Try to write some data from the buffer to the file registered with __fd_set_output().

This is typically called from backend callbacks when it seems that it is possible to write some data to the file.

Returns

Returns -1 on write error, and otherwise the number of bytes written to the file.

See also

__fd_set_output()