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Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -25452,6 +25452,37 @@ place denotes a value stored in a dynamic data set such as a hash table, then deletion of that place implies deletion of the entry which holds that value. If the entry is identified by a key, that key is also removed. +.coNP Macro @ lset +.synb +.mets (lset <> { place }+ << list-expr ) +.syne +.desc +The +.code lset +operator's parameter list consists of one or more places followed +by an expression +.metn list-expr . + +The macro evaluates +.codn list-expr , +which is expected to produce a proper list. + +Successive elements of the resulting list are then assigned to each +successive +.codn place . + +If there are fewer elements in the list than places, the +unmatched places receive the value +.codn nil . + +Excess elements in the list are ignored. + +A +.code lset +form produces the value of +.meta list-expr +as its result value. + .SS* User-Defined Places and Place Operators \*(TL provides a number of place-modifying operators such as .codn set , |