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Assignment in an if statement
I have a class Animal , and its subclass Dog .
I often find myself coding the following lines:
17 Answers
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Is a view faster than a simple query?
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Yes, views can have a clustered index assigned and, when they do, they'll store temporary results that can speed up resulting queries.
Update: At least three people have voted me down on this one. With all due respect, I think that they are just wrong; ...
Rename all files in directory from $filename_h to $filename_half?
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Just use bash, no need to call external commands.
for file in *_h.png
do
mv "$file" "${file/_h.png/_half.png}"
done
Do not add #!/bin/sh
For those that need that one-liner:
for file in *.png; do mv "$file" "${file/_h.png/_half.png}"; done
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Is an array name a pointer?
Is an array's name a pointer in C?
If not, what is the difference between an array's name and a pointer variable?
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Syntax behind sorted(key=lambda: …)
I don't quite understand the syntax behind the sorted() argument:
9 Answers
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How do you read from stdin?
I'm trying to do some of the code golf challenges, but they all require the input to be taken from stdin . How do I get that in Python?
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What is function overloading and overriding in php?
In PHP, what do you mean by function overloading and function overriding. and what is the difference between both of them? couldn't figure out what is the difference between them.
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How much faster is Redis than mongoDB?
It's widely mentioned that Redis is "Blazing Fast" and mongoDB is fast too. But, I'm having trouble finding actual numbers comparing the results of the two. Given similar configurations, features and operations (and maybe showing how the factor changes with different configurations and operations), ...
Selecting multiple columns in a pandas dataframe
I have data in different columns but I don't know how to extract it to save it in another variable.
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Removing duplicates from a list of lists
I have a list of lists in Python:
11 Answers
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