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(String Ports): In call-with-output-string, note proc

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should not close the port.  In get-output-string, note string must be
gotten before closing the port.
This commit is contained in:
Kevin Ryde 2003-10-02 00:25:05 +00:00
parent d5c4160240
commit a1e7d87423
1 changed files with 4 additions and 1 deletions
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5
doc/ref/scheme-io.texi
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@ -777,7 +777,7 @@ file port facilities:
@deffnx {C Function} scm_call_with_output_string (proc) @deffnx {C Function} scm_call_with_output_string (proc)
Calls the one-argument procedure @var{proc} with a newly created output Calls the one-argument procedure @var{proc} with a newly created output
port. When the function returns, the string composed of the characters port. When the function returns, the string composed of the characters
written into the port is returned. written into the port is returned. @var{proc} should not close the port.
@end deffn @end deffn
@deffn {Scheme Procedure} call-with-input-string string proc @deffn {Scheme Procedure} call-with-input-string string proc
@ -821,6 +821,9 @@ inaccessible.
Given an output port created by @code{open-output-string}, Given an output port created by @code{open-output-string},
return a string consisting of the characters that have been return a string consisting of the characters that have been
output to the port so far. output to the port so far.
@code{get-output-string} must be used before closing @var{port}, once
closed the string cannot be obtained.
@end deffn @end deffn
A string port can be used in many procedures which accept a port A string port can be used in many procedures which accept a port