Module#attr_reader

attr_reader(symbol, ...) → array

attr(symbol, ...) → array

attr_reader(string, ...) → array

attr(string, ...) → array

static VALUE
rb_mod_attr_reader(int argc, VALUE *argv, VALUE klass)
{
    int i;
    VALUE names = rb_ary_new2(argc);

    for (i=0; i<argc; i++) {
        ID id = id_for_attr(klass, argv[i]);
        rb_attr(klass, id, TRUE, FALSE, TRUE);
        rb_ary_push(names, ID2SYM(id));
    }
    return names;
}

Creates instance variables and corresponding methods that return the value of each instance variable. Equivalent to calling “attr:name” on each name in turn. String arguments are converted to symbols. Returns an array of defined method names as symbols.

Ruby version changes

3.0
- Module#attr_accessor, Module#attr_reader, Module#attr_writer and Module#attr methods now return an array of defined method names as symbols. [Feature #17314]

See also #attr_accessor #attr_writer #attr #autoload also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0

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