Array#dig

(::int idx) -> Elem?

(::int idx, untyped, *untyped) -> untyped

array.dig(index, *identifiers) → object

static VALUE
rb_ary_dig(int argc, VALUE *argv, VALUE self)
{
    rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
    self = rb_ary_at(self, *argv);
    if (!--argc) return self;
    ++argv;
    return rb_obj_dig(argc, argv, self, Qnil);
}

Finds and returns the object in nested object specified by index and identifiers; the nested objects may be instances of various classes. See Dig Methods.

Examples:

Example

a = [:foo, [:bar, :baz, [:bat, :bam]]]
a.dig(1) # => [:bar, :baz, [:bat, :bam]]
a.dig(1, 2) # => [:bat, :bam]
a.dig(1, 2, 0) # => :bat
a.dig(1, 2, 3) # => nil

Related: see Methods for Fetching.

See also #difference #drop #delete_if #drop_while also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0

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