Changes between Version 3 and Version 4 of Doc/panc/statements
- Timestamp:
- Mar 7, 2007, 1:30:43 PM (19 years ago)
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Doc/panc/statements
v3 v4 26 26 [ final ] path = dml; 27 27 }}} 28 where the path is represented by a string literal. Single-quoted strings are slightly more efficient, but double-quoted strings work as well. The conditional form ( ?=) will only execute the DML block and assign a value if the named path does not exist or contains the undef value.28 where the path is represented by a string literal. Single-quoted strings are slightly more efficient, but double-quoted strings work as well. The conditional form (`?=`) will only execute the DML block and assign a value if the named path does not exist or contains the undef value. 29 29 30 30 The assignment will create parents of the value that do not already exist.