End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
Integer#<<
self << count → integer
numeric.c
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VALUE
rb_int_lshift(VALUE x, VALUE y)
{
if (FIXNUM_P(x)) {
return rb_fix_lshift(x, y);
}
else if (RB_BIGNUM_TYPE_P(x)) {
return rb_big_lshift(x, y);
}
return Qnil;
}
Returns self with bits shifted count positions to the left, or to the right if count is negative:
Example
n = 0b11110000 "%08b" % (n << 1) # => "111100000" "%08b" % (n << 3) # => "11110000000" "%08b" % (n << -1) # => "01111000" "%08b" % (n << -3) # => "00011110"
Related: Integer#>>.