Implement argument type check for Tox#initialize
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@ -54,7 +54,9 @@ VALUE cTox_initialize(const VALUE self, const VALUE options)
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cTox_ *tox;
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cTox_cOptions_ *tox_options;
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/* check if `options` is instance of `Tox::Options` */
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// check if `options` is instance of `Tox::Options`
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if (Qfalse == rb_funcall(options, rb_intern("is_a?"), 1, cTox_cOptions))
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rb_raise(rb_eTypeError, "argument 1 should be Tox::Options");
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Data_Get_Struct(self, cTox_, tox);
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Data_Get_Struct(options, cTox_cOptions_, tox_options);
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