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Explaining that :keyword syntax is for post 0.10.1 only

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Christopher Allan Webber 2014-12-23 15:05:36 -06:00
parent cacc14a7be
commit 706376277f
1 changed files with 8 additions and 2 deletions
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docs/tutorial.rst
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@ -396,20 +396,26 @@ The same thing in Hy::
[1 2 None 42] [1 2 None 42]
=> (optional-arg 1 2 3 4) => (optional-arg 1 2 3 4)
[1 2 3 4] [1 2 3 4]
If you're running a version of Hy past 0.10.1 (eg, git master),
there's also a nice new keyword argument syntax::
=> (optional-arg :keyword1 1 => (optional-arg :keyword1 1
... :pos2 2 ... :pos2 2
... :pos1 3 ... :pos1 3
... :keyword2 4) ... :keyword2 4)
[3, 2, 1, 4] [3, 2, 1, 4]
Are you familiar with passing in *args and **kwargs in Python?:: Otherwise, you can always use `apply`. But what's `apply`?
Are you familiar with passing in `*args` and `**kwargs` in Python?::
>>> args = [1 2] >>> args = [1 2]
>>> kwargs = {"keyword2": 3 >>> kwargs = {"keyword2": 3
... "keyword1": 4} ... "keyword1": 4}
>>> optional_arg(*args, **kwargs) >>> optional_arg(*args, **kwargs)
We can reproduce this with "apply":: We can reproduce this with `apply`::
=> (setv args [1 2]) => (setv args [1 2])
=> (setv kwargs {"keyword2" 3 => (setv kwargs {"keyword2" 3