instance method

Array#delete_if

() { (Elem item) -> ::boolish } -> self

() -> ::Enumerator[Elem, self]

delete_if {|element| ... } → self

delete_if → new_numerator

static VALUE
rb_ary_delete_if(VALUE ary)
{
    ary_verify(ary);
    RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
    ary_reject_bang(ary);
    return ary;
}

With a block given, calls the block with each element of self; removes the element if the block returns a truthy value; returns self:

Example

a = [:foo, 'bar', 2, 'bat']
a.delete_if {|element| element.to_s.start_with?('b') } # => [:foo, 2]

With no block given, returns a new Enumerator.

Related: see Methods for Deleting.

See also #delete_at #detect #delete #difference also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

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