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Related Syntax | Related Concepts | ||||
action |
put |
Syntax
put stream-name indexer? open-modifiers? (& stream-name indexer? open-modifiers?)* string-expression
An action that writes the specified string-expression to one or more streams.
The string expression is evaluated only as needed, depending on its content:
file
followed by a filename, the file will be read incrementally, allowing large files to be processed.
external string source function
, the function will be called when its text is required. The #current-output
set inherited by the function is the streams being written to by the put
. After this, text from the function will be read incrementally, so the information returned does not need to be stored in memory all at once.
#current-output
set inherited by the function is the streams being written to by the put
.
Only the following open-modifiers are permitted with put
:
binary
open modifier.
The specified open-modifiers replace the one currently in force. If no open-modifiers are specified, the ones currently in force are used.
Before writing text to the specified stream items, the put
action saves the old #current-output
set, and creates a new #current-output
set consisting of the specified stream items. When the writing is complete, the previous #current-output
is restored. This causes #current-output
sets to be nested within each other. This useful feature is important when the string expression contains a %c
operator.
#current-output
may be given as one of the stream-names. In this case, the text is written to the set of streams that are currently active, as well as the other ones specified.
You can only use put
on an open stream.
Related Syntax #current-output binary file |
Related Concepts Output |
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