Ruby Pocket Reference

Operators

Table 2 lists all of Ruby’s operators in descending order of precedence. Operators that are implemented as methods may be overridden and are indicated in the Method column.

Table 2. Ruby’s operators

Operator	Description	Method
::	Scope resolution
[] []=	Reference, set	✓
**	Raise to power (exponentiation)	✓
+ - ! ˜	Positive (unary), negative (unary), logical negation, complement	✓ (not !)
* / %	Multiplication, division, modulo (remainder)	✓
+ -	Addition, subtraction	✓
<< >>	Shift left, shift right	✓
&	Bitwise and	✓
| ^	Bitwise or, bitwise exclusive or	✓
> >= < <=	Greater than, greater than or equal to, less than, less than or equal to	✓
<=> == === != =˜ !˜	Equality comparison (spaceship, equality, equality, not equal to, match, not match	✓ (not != or !˜)
&&	Logical and
||	Logical or
.. ...	Range inclusive, range exclusive	✓ (not ...)
? :	Ternary
= += -= *= /= %= **= <<= >>= &= |= ^= &&= ||=	Assignment, abbreviated assignment
not	Logical negation
and or	Logical composition
defined?	Special operator (no precedence)