instance method

Hash#each_pair

() { ([ K, V ] arg0) -> untyped } -> self

() -> ::Enumerator[[ K, V ], self]

each_pair {|key, value| ... } → self

each_pair → new_enumerator

static VALUE
rb_hash_each_pair(VALUE hash)
{
    RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
    if (rb_block_pair_yield_optimizable())
        rb_hash_foreach(hash, each_pair_i_fast, 0);
    else
        rb_hash_foreach(hash, each_pair_i, 0);
    return hash;
}

With a block given, calls the block with each key-value pair; returns self:

Example

h = {foo: 0, bar: 1, baz: 2}
h.each_pair {|key, value| puts "#{key}: #{value}"} # => {foo: 0, bar: 1, baz: 2}

Output:

foo: 0
bar: 1
baz: 2

With no block given, returns a new Enumerator.

Related: see Methods for Iterating.

See also #each_key #each_value #each #empty? also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

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