$$ » History » Version 2
Per Amundsen, 08/14/2015 02:18 PM
| 1 | 1 | Per Amundsen | _Added in 1.9.0_ |
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| 2 | |||
| 3 | *$$* |
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| 4 | |||
| 5 | The double $$ means that the script will halt unless the identifier has a value. |
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| 6 | |||
| 7 | This can be used on any identifier to ensure it has a value. |
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| 8 | |||
| 9 | *Example* |
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| 10 | |||
| 11 | <pre> |
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| 12 | 2 | Per Amundsen | ; If the user enters no name the script halts, otherwise prints the name. |
| 13 | 1 | Per Amundsen | //echo -ag $$?="Insert name" |
| 14 | </pre> |