corrected slice to cut in docs

corrected slice to cut in the documentation.

also corrected a line in parse tumblr that used slice
This commit is contained in:
Calem Bendell 2014-09-05 21:17:46 -04:00 committed by Gergely Nagy
parent 61e4b9dfed
commit 12db748c97
3 changed files with 12 additions and 12 deletions

View File

@ -657,7 +657,7 @@ del
=> (setv test (list (range 10)))
=> test
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
=> (del (slice test 2 4)) ;; remove items from 2 to 4 excluded
=> (del (cut test 2 4)) ;; remove items from 2 to 4 excluded
=> test
[0, 1, 4, 5, 6, 7, 8, 9]
=> (setv dic {"foo" "bar"})
@ -1243,35 +1243,35 @@ expression.
{1, 3, 5}
slice
cut
-----
``slice`` can be used to take a subset of a list and create a new list from it.
The form takes at least one parameter specifying the list to slice. Two
``cut`` can be used to take a subset of a list and create a new list from it.
The form takes at least one parameter specifying the list to cut. Two
optional parameters can be used to give the start and end position of the
subset. If they are not supplied, the default value of ``None`` will be used
instead. The third optional parameter is used to control step between the elements.
``slice`` follows the same rules as its Python counterpart. Negative indices are
``cut`` follows the same rules as its Python counterpart. Negative indices are
counted starting from the end of the list. Some example usage:
.. code-block:: clj
=> (def collection (range 10))
=> (slice collection)
=> (cut collection)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
=> (slice collection 5)
=> (cut collection 5)
[5, 6, 7, 8, 9]
=> (slice collection 2 8)
=> (cut collection 2 8)
[2, 3, 4, 5, 6, 7]
=> (slice collection 2 8 2)
=> (cut collection 2 8 2)
[2, 4, 6]
=> (slice collection -4 -2)
=> (cut collection -4 -2)
[6, 7]

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@ -184,7 +184,7 @@ expressions are made of Python lists wrapped in a
- ``(cons something some-list)`` is ``((type some-list) (+ [something]
some-list))`` (if ``some-list`` inherits from ``list``).
- ``(get (cons a b) 0)`` is ``a``
- ``(slice (cons a b) 1)`` is ``b``
- ``(cut (cons a b) 1)`` is ``b``
Hy supports a dotted-list syntax, where ``'(a . b)`` means ``(cons 'a
'b)`` and ``'(a b . c)`` means ``(cons 'a (cons 'b 'c))``. If the

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@ -20,6 +20,6 @@
(for [post (.xpath (get-rss-feed tumblr) "//item/title")]
(print post.text)))
(if (slice argv 2)
(if (cut argv 2)
(print-posts (get argv 2))
(print-posts "this-plt-life"))