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mplist_put

NAME

mplist_put − Set the value of a property in a property list.

SYNOPSIS

MPlist* mplist_put (MPlist * plist, MSymbol key, void * val)

DESCRIPTION

Set the value of a property in a property list. The mplist_put() function searches property list plist from the beginning for a property whose key is key. If such a property is found, its value is changed to value. Otherwise, a new property whose key is key and value is value is appended at the end of plist. See the documentation of mplist_add() for the restriction on key and val.

If key is a managing key, val must be a managed object. In this case, the reference count of the old value, if not NULL, is decremented by one, and that of val is incremented by one.

RETURN VALUE

If the operation was successful, mplist_put() returns a sublist of plist whose first element is the just modified or added one. Otherwise, it returns NULL.

COPYRIGHT

Copyright (C) 2001 Information−technology Promotion Agency (IPA)
Copyright (C) 2001−2011 National Institute of Advanced Industrial Science and Technology (AIST)
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License <http://www.gnu.org/licenses/fdl.html>.

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