Next: All Operators, Up: Expressions [Contents][Index]
Expressions are built up from values and the operations performed upon them. This section describes the elementary objects that provide the values used in expressions.
| • Constants: | String, numeric and regexp constants. | |
| • Using Constant Regexps: | When and how to use a regexp constant. | |
| • Variables: | Variables give names to values for later use. | |
| • Conversion: | The conversion of strings to numbers and vice versa. |