outstring

outstring( 
) 
=> p_openedPort / nil

Description

Takes no arguments and returns an opened output port for strings (or an outport). After a port is opened, it can be used with functions, such as fprintf, println, and close that write to an output port. You need to use the getOutstring function to retrieve the content of output port (while it is open).

You can use the close function to close the output port.

Arguments

None

Value Returned

p_openedPort	The opened output port
nil	The port cannot be opened

Examples

s = outstring() ; string port opened for output

=> port:s

fprintf(s "the value is %d" 1) ; fprintf into string

getOutstring(s)

=> the value is 1

close(s)

getOutstring(s)

=> nil

Related Topics

Input Output Functions

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