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List comprehension vs map
Is there a reason to prefer using map() over list comprehension or vice versa? Is either of them generally more efficient or considered generally more pythonic than the other?
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“var” or no “var” in JavaScript's “for-in” loop?
What's the correct way to write a for-in loop in JavaScript? The browser doesn't issue a complaint about either of the two approaches I show here. First, there is this approach where the iteration variable x is explicitly declared:
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When to use extern in C++
I'm reading "Think in C++" and it just introduced the extern declaration. For example:
4 Answers
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A monad is just a monoid in the category of endofunctors, what's the problem?
Who first said the following?
5 Answers
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What is the difference between i++ and ++i?
I've seen them both being used in numerous pieces of C# code, and I'd like to know when to use i++ or ++i ( i being a number variable like int , float , double , etc). Anyone who knows this?
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Fast way of finding lines in one file that are not in another?
I have two large files (sets of filenames). Roughly 30.000 lines in each file. I am trying to find a fast way of finding lines in file1 that are not present in file2.
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Iterate all files in a directory using a 'for' loop
How can I iterate over each file in a directory using a for loop?
17 Answers
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Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
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Spring lets you define multiple contexts in a parent-child hierarchy.
The applicationContext.xml defines the beans for the "root webapp context", i.e. the context associated with the webapp.
The spring-servlet.xml (or whatever...
For-each over an array in JavaScript
How can I loop through all the entries in an array using JavaScript?
40 Answers
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How to create a trie in Python
I'm interested in tries and DAWGs (direct acyclic word graph) and I've been reading a lot about them but I don't understand what should the output trie or DAWG file look like.
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