StringScanner#<<

(::String) -> self

<<(p1)

static VALUE
strscan_concat(VALUE self, VALUE str)
{
    struct strscanner *p;

    GET_SCANNER(self, p);
    StringValue(str);
    rb_str_append(p->str, str);
    return self;
}

Alias of #concat

Appends the given more_string to the stored string.
Returns self.
Does not affect the positions or match values.

Example

scanner = StringScanner.new('foo')
scanner.string           # => "foo"
scanner.terminate
scanner.concat('barbaz') # => #<StringScanner 3/9 "foo" @ "barba...">
scanner.string           # => "foobarbaz"
put_situation(scanner)
# Situation:
#   pos:       3
#   charpos:   3
#   rest:      "barbaz"
#   rest_size: 6

See also #concat .new #[] #beginning_of_line? also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0

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