Gamma: Version 4.0
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fd_data_function

fd_data_function --  attaches a write-activated callback to a file.

Syntax

fd_data_function (fd|file, code)

Arguments

fd|file

A file descriptor as returned from fd_open, or the name of a file pointer to a file that was opened by a call to open or open_string.

code

Any valid Gamma program, executable code block, or statement.

Returns

The return value of the executed code.

Description

This function acts as a callback, causing the code to execute whenever data is written to the file associated with the fd or file pointer.

See Also

fd_open, fd_eof_function, fd_write, open, open_string, write

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