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Hidden features of C
I know there is a standard behind all C compiler implementations, so there should be no hidden features. Despite that, I am sure all C developers have hidden/secret tricks they use all the time.
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How can I get a side-by-side diff when I do “git diff”?
When I type "git diff", I'd like to see a side-by-side diff, like with "diff -y", or like to display the diff in an interactive diff tool like "kdiff3". How can this be done?
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Is there a regular expression to detect a valid regular expression?
Is it possible to detect a valid regular expression with another regular expression? If so please give example code below.
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How to get line count of a large file cheaply in Python?
I need to get a line count of a large file (hundreds of thousands of lines) in python. What is the most efficient way both memory- and time-wise?
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Using semicolon (;) vs plus (+) with exec in find
Why is there a difference in output between using
6 Answers
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Has anyone actually implemented a Fibonacci-Heap efficiently?
Has anyone of you ever implemented a Fibonacci-Heap ? I did so a few years back, but it was several orders of magnitude slower than using array-based BinHeaps.
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Expansion of variables inside single quotes in a command in Bash
I want to run a command from a bash script which has single quotes and some other commands inside the single quotes and a variable.
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Java compile speed vs Scala compile speed
I've been programming in Scala for a while and I like it but one thing I'm annoyed by is the time it takes to compile programs. It's seems like a small thing but with Java I could make small changes to my program, click the run button in netbeans, and BOOM, it's running, and over time compiling in ...
What's the valid way to include an image with no src?
I have an image that I will dynamically populate with a src later with javascript but for ease I want the image tag to exist at pageload but just not display anything. I know <img src='' /> is invalid so what's the best way to do this?
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Should I index a bit field in SQL Server?
I remember reading at one point that indexing a field with low cardinality (a low number of distinct values) is not really worth doing. I admit I don't know enough about how indexes work to understand why that is.
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