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instance method · added in Ruby 3.2

Module#undefined_instance_methods

() -> ::Array[::Symbol]

mod.undefined_instance_methods → array

VALUE
rb_class_undefined_instance_methods(VALUE mod)
{
    VALUE include_super = Qfalse;
    return class_instance_method_list(1, &include_super, mod, 0, ins_methods_undef_i);
}

Returns a list of the undefined instance methods defined in mod. The undefined methods of any ancestors are not included.

Ruby version changes

3.2
- Module#undefined_instance_methods has been added. [Feature #12655]

See also #to_s #undef_method #singleton_class? #using also in 4.0 · 3.4 · 3.3 · 3.2

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