diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 75 |
1 files changed, 75 insertions, 0 deletions
@@ -15145,6 +15145,19 @@ if there is no such entry. The expression .meta alt is always evaluated, whether or not its value is used. +.meIP >> [ search-tree << key ] +Retrieves an element from the search tree as if by applying the +.code tree-lookup +function to +.metn key . + +.meIP >> [ search-tree << from-key .. to-below-key ] +Retrieves a list of elements from the search tree as if by evaluating the +.mono +.meti (sub-tree < search-tree < from-key << to-below-key ) +.onom +expression. + .meIP >> [ regex >> [ start <> [ from-end ]] < string ] Determine whether regular expression .meta regex @@ -30605,6 +30618,18 @@ object, then the function behaves like If .meta sequence +is a +.code tree +object, then the function behaves like +.codn sub-tree . +Note: because +.code sub-tree +is not an accessor, assigning to the +.code sub +syntax in this case will produce an error. + +If +.meta sequence is a structure, it must support the .code lambda method. The @@ -31592,6 +31617,16 @@ are erroneous. For hashes, accesses to nonexistent elements are treated leniently, and produce .codn nil . +If +.meta sequence +is a search tree, then +.code ref +behaves like +.codn tree-lookup . +The +.code refset +function is not supported by search trees. + The .code refset function is strict for out-of-range indices over all sequences, @@ -51925,6 +51960,46 @@ is invoked more than once on the same iterator without any intervening calls to it returns the same node; it does not appear to change the state of the iterator and therefore does not advance through successive nodes. +.coNP Function @ sub-tree +.synb +.mets (sub-tree < tree >> [ from-key <> [ to-key ]]) +.syne +.desc +The +.code sub-tree +function selects those elements elements in +.meta tree +which are not less than +.meta from-key +but less than +.metn to-key . + +If only the +.meta from-key +argument is specified, then +.code sub-tree +selects those elements which are not less than +.metn from-key . + +Similarly, if only the +.meta to-key +argument is specified, then +.code sub-tree +selects those elements which are less than +.metn to-key . + +If neither +.meta from-key +nor +.meta to-key +are specified, then +.code sub-tree +selects all elements from the tree. + +A list of the selected elements is returned, in which the elements appear in +the same order as they do in +.metn tree . + .coNP Function @ copy-tree-iter .synb .mets (copy-tree-iter < iter ) |