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instance method

Struct#filter

() -> ::Enumerator[E, ::Array[E]]

() { (E value) -> ::boolish } -> ::Array[E]

filter(*args)

static VALUE
rb_struct_select(int argc, VALUE *argv, VALUE s)
{
    VALUE result;
    rb_len_t i;

    rb_check_arity(argc, 0, 0);
    RETURN_SIZED_ENUMERATOR(s, 0, 0, struct_enum_size);
    result = rb_ary_new();
    for (i = 0; i < RSTRUCT_LEN_RAW(s); i++) {
        if (RTEST(rb_yield(RSTRUCT_GET_RAW(s, i)))) {
            rb_ary_push(result, RSTRUCT_GET_RAW(s, i));
        }
    }

    return result;
}

Alias of #select

With a block given, returns an array of values from self for which the block returns a truthy value:

Example

Customer = Struct.new(:name, :address, :zip)
joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)
a = joe.select {|value| value.is_a?(String) }
a # => ["Joe Smith", "123 Maple, Anytown NC"]
a = joe.select {|value| value.is_a?(Integer) }
a # => [12345]

With no block given, returns an Enumerator.

See also #select #eql? #hash #each_pair also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0

‹ prev#eql? next ›#hash