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Algorithm to generate all possible permutations of a list?
...o order these elements. What is an algorithm to generate all possible orderings of this list? Example, I have list [a, b, c]. The algorithm would return [[a, b, c], [a, c, b,], [b, a, c], [b, c, a], [c, a, b], [c, b, a]].
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Using curl POST with variables defined in bash script functions
When I echo I get this, which runs when I enter it into the terminal
7 Answers
7
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How can I reverse a list in Python?
How can I do the following in Python?
35 Answers
35
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How to trace the path in a Breadth-First Search?
How do you trace the path of a Breadth-First Search, such that in the following example:
5 Answers
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Good or bad practice? Initializing objects in getter
I have a strange habit it seems... according to my co-worker at least. We've been working on a small project together. The way I wrote the classes is (simplified example):
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What is the difference between Non-Repeatable Read and Phantom Read?
...and detailed examples for this):
A non-repeatable read occurs, when during the course of a transaction, a row is retrieved twice and the values within the row differ between reads.
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A phantom read occurs when, in the course of a transaction, two identical queries are executed, and the c...
Differences in string compare methods in C#
Comparing string in C# is pretty simple. In fact there are several ways to do it. I have listed some in the block below. What I am curious about are the differences between them and when one should be used over the others? Should one be avoided at all costs? Are there more I haven't listed?
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Using 'return' in a Ruby block
I'm trying to use Ruby 1.9.1 for an embedded scripting language, so that "end-user" code gets written in a Ruby block. One issue with this is that I'd like the users to be able to use the 'return' keyword in the blocks, so they don't need to worry about implicit return values. With this in mind, t...
Update ViewPager dynamically?
I can't update the content in ViewPager.
20 Answers
20
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python list by value not by reference [duplicate]
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As answered in the official Python FAQ:
b = a[:]
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