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instance method

String#empty?

() -> bool

empty? → true or false

static VALUE
rb_str_empty(VALUE str)
{
    return RBOOL(RSTRING_LEN(str) == 0);
}

Returns whether the length of self is zero:

Example

'hello'.empty? # => false
' '.empty? # => false
''.empty? # => true

Related: see Querying.

See also #each_line #encode #each_grapheme_cluster #encode! also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0