Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #41023

RE: Switch statement

Path csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!ecngs!feeder2.ecngs.de!newsfeed.freenet.ag!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <jcasale@activenetwerx.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.039
X-Spam-Evidence '*H*': 0.92; '*S*': 0.00; 'applicable,': 0.07; 'slightly': 0.15; 'a),': 0.16; 'lambda': 0.16; 'received:172.18.0': 0.16; 'to:name:python-list@python.org': 0.20; "haven't": 0.23; 'header:In-Reply-To:1': 0.25; 'appreciated': 0.27; 'skip:> 10': 0.27; '8bit%:5': 0.29; 'switch': 0.32; 'to:addr :python-list': 0.33; 'but': 0.36; 'should': 0.36; 'ok,': 0.37; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'received:unknown': 0.63; 'more': 0.63
X-Cloudmark-SP-Filtered true
X-Cloudmark-SP-Result v=1.1 cv=af5CIMo/LcwhE/oGmlIBzBFfdATRqF9T4efLO6x9hFM= c=1 sm=1 a=CRTDazI5n6YA:10 a=7PYXob_7ZXMA:10 a=BLceEmwcHowA:10 a=8nJEP1OIZ-IA:10 a=xqWC_Br6kY4A:10 a=oNw28mxuUhXRB3mVwYQ4Ag==:17 a=fG8tDqOYOoB8kULJ8cQA:9 a=wPNLvfGTeEIA:10 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117
From "Joseph L. Casale" <jcasale@activenetwerx.com>
To "python-list@python.org" <python-list@python.org>
Subject RE: Switch statement
Thread-Topic Switch statement
Thread-Index AQHOHaJ4ESFVWYLgCEa6JjfGB2X4CZifM/y/
Date Sun, 10 Mar 2013 17:51:58 +0000
References <513ca430$0$6512$c3e8da3$5496439d@news.astraweb.com>
In-Reply-To <513ca430$0$6512$c3e8da3$5496439d@news.astraweb.com>
Accept-Language en-US
Content-Language en-US
X-MS-Has-Attach
X-MS-TNEF-Correlator
x-originating-ip [172.18.0.200]
Content-Type text/plain; charset="iso-8859-1"
Content-Transfer-Encoding quoted-printable
MIME-Version 1.0
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.15
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.3157.1362937989.2939.python-list@python.org> (permalink)
Lines 20
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1362937989 news.xs4all.nl 6910 [2001:888:2000:d::a6]:40092
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:41023

Show key headers only | View raw


> switch = { 

>     'A': functools.partial(spam, a),
>     'B': lambda b, c=c: ham(b, c),
>     'C': eggs,
>     }
> 
> switch[letter](b)

That's cool, never even thought to use lambdas.

> functools.partial isn't always applicable, but when it is, you should
> prefer it over lambda since it will be very slightly more efficient.


Ok, haven't used this before but I will give it a read!


Much appreciated Steven!
jlc

Back to comp.lang.python | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Switch statement "Joseph L. Casale" <jcasale@activenetwerx.com> - 2013-03-10 14:16 +0000
  Re: Switch statement Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-03-10 15:18 +0000
    RE: Switch statement "Joseph L. Casale" <jcasale@activenetwerx.com> - 2013-03-10 17:51 +0000
    Re: Switch statement Terry Reedy <tjreedy@udel.edu> - 2013-03-10 18:02 -0400

csiph-web