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Ruby. Receptury
book

Ruby. Receptury

by Lucas Carlson, Leonard Richardson
November 2012
Intermediate to advanced content levelIntermediate to advanced
888 pages
54h 46m
Polish
Helion
Content preview from Ruby. Receptury

10.2. Zestaw metod obiektu

Problem

Mamy do czynienia z nieznanym obiektem i chcemy dowiedzieć się, na wywołania jakich metod obiekt ten jest w stanie odpowiedzieć.

Rozwiązanie

Dla danego obiektu metoda Object#methods zwraca listę (tablicę) jego publicznych metod instancyjnych.

obj = Object.new obj.methods.sort # => ["==", "===", "=~", "__id__", "__send__", "class", "clone", "display", "dup", "eql?", "equal?", "extend", "freeze", "frozen?", "gem", "hash", "id", "inspect", "instance_eval", "instance_of?", "instance_variable_get", "instance_variable_set", "instance_variables", "is_a?", "kind_of?", "method", "methods", "nil?", "object_id", "pretty_print", "pretty_print_cycle", "pretty_print_inspect", "pretty_print_instance_variables", ...
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Publisher Resources

ISBN: 9781457177453Errata Page