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What - no switch or case statement?
Both Perl and Python lack a switch and case type contruct that you'll find in almost any other programming language. Why's this? Switch and case, where provided, give a multiway branch capability but - quite frankly - I've always found them to be messy constructs in all the various languages that I've used. So perhaps the authors of Perl and Python are forward thinking rather than cramming their language with "me also" type facilities. You really DON'T need them!! In Python, you can use a dictionary of code objects and there's no need for any conditional statements at all - very clever (if a bit obscure), so I've put an example into our course follow up examples In Perl, you can use a label to "mimic" a switch - again, I've provided an example so that you can see the detail if you wish. (written 2005-05-03 15:54:46) Associated topics are indexed under P206 - Perl - More Loops and Conditionals[1825] Question Mark - Colon operator (Perl and PHP) - (2008-10-08) [1696] Saying NOT in Perl, PHP, Python, Lua ... - (2008-07-04) [1582] Ruby, C, Java and more - getting out of loops - (2008-03-19) [1220] for loop - how it works (Perl, PHP, Java, C, etc) - (2007-06-06) [1191] Smart English Output - via PHP and Perl ? : operator - (2007-05-18) [962] Breaking a loop - Ruby and other languages - (2006-12-03) [657] The ternary operator in Python - (2006-03-25) [138] Perl - redo and last without a loop - (2004-12-02) Y103 - Python - Conditionals and Loops [1661] Equality, sameness and identity - Python - (2008-05-31) [1477] Decisions - small ones, or big ones? - (2007-12-18) [1201] No switch in Python - (2007-05-23) [909] Python is like a narrowboat - (2006-10-30) [835] Python - when to use the in operator - (2006-08-16) [788] New - Conditional expressions in Python 2.5 - (2006-07-01) [668] Python - block insets help with documentation - (2006-04-04) [353] Wimbledon Neck - (2005-06-20)
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Lambdas in PythonDining full circle General Election day, UK Dentist's Waiting Room Syndrome What - no switch or case statement? Sharing pictures of Wiltshire A reminder that the customer is King Using a Python dictionary as a holder of object attributes Pricing strategy - simple and fair Python generator functions, lambdas, and iterators |
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