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Article:		Extending Ruby with C
Subject:		Use rb_scan_args()
Date:		2004-11-19 15:40:58
From:		djberg96

You should do manual argument counting in variable length argument lists. Use rb_scan_args() instead. In writer_begin_element() for example, it should look like this: static VALUE writer_begin_element (int argc, VALUE argv, VALUE self) { genxWriter w; VALUE rbName, rbXmlns; / One mandatory, one optional argument */ rb_scan_args(argc,argv,"11",&rbName,&rbXmlns); Check_Type(rbName,T_STRING); if(Qnil != rbXmlns) Check_Type(rbXmlns,T_STRING); ... The front end API would then be: Genx::Writer#begin_element(name,namespace=nil) This is more concise, and less prone to error than checking argc manually.

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Use rb_scan_args()
2004-11-19 15:44:38 rooneg [View]

Thanks for the pointer, when I get a chance I'll make those changes to the current version of GenX4r.