Call an object method: Difference between revisions
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TXR Lisp method invocation syntax is <code>obj.(method args...)</code>.
Static methods are just functions that don't take an object as an argument. The above notation, therefore, normally isn't used, rather the functional square brackets: <code>[obj.function args...]</code>.
The <code>defstruct</code> clause <code>:method</code> is equivalent to <code>:function</code> except that it requires at least one argument, the leftmost one denoting the object.
The <code>obj.(method args...)</code> could be used to call a static function; it would pass <code>obj</code> as the leftmost argument. Vice versa, the square bracket call notation can be used to invoke a method; the object has to be manually inserted: <code>[obj.function obj args...]</code>.
<syntaxhighlight lang="txrlisp">(defvarl thing-count 0)
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