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Javascript Functional programming with Underscore or ECMAScript5

by Christian Harms on Mon, 10/04/2010 - 20:56

Intro: A little excursion to code more functional with javascript. It contain examples with the classic for-loop-code, the more functional variant with Underscore.js and the HTML5 functional enhancements. It does not explain the basic idea of functional programming - it shows the differences in code examples.

motivation

Last week I got access on the address book from Matthias' well known entry Jennifer. But I had no time to scan all the other girls addresses. With many lines of source code filled with for-loop-code - no way. I have to find a smarter coding way to scan the address book.Read more

Functional programming with Python

by Christian Harms on Mon, 03/30/2009 - 21:28

To work with lists many c/c++ programmer use a simple for-loop. I will try to explain how this can be made a little bit easier. For that I use the self-explaining script language python.

Here is a simple example to filter all odd integers from a list in simple python 2.x syntax.

def filter_odd(myList):  

   result = []               # initialize the result list  

   for num in myList:               # iterate over the list  

     if num % 2 == 1:        # modulo 2 return 1 for odd integers

        result.append(num)   # add to the result

   return result

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