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What is the benefit of using $() instead of backticks in shell scripts?
...such warranties or fitness of purpose. I would instead reuse code on SO at my own risk, and vote contributions according to helpfulness, technical merits, etc.
– chrstphrchvz
Feb 11 '17 at 0:23
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Delete all but the most recent X files in bash
...lanation for why it's generally not a good idea to parse ls output: http://mywiki.wooledge.org/ParsingLs
ls -tp | grep -v '/$' | tail -n +6 | xargs -I {} rm -- {}
The above is inefficient, because xargs has to invoke rm once for each filename.
Your platform's xargs may allow you to solve this pro...
Thou shalt not inherit from std::vector
...nt with free functions (e.g. should keep some state).
The problem is that MyVector is a new entity. It means a new C++ developer should know what the hell it is before using it. What's the difference between std::vector and MyVector? Which one is better to use here and there? What if I need to move...
What is the way to quick-switch between tabs in Xcode 4
... That should be command + shift + ..., I think. At least on my machine.
– Chris Ladd
Feb 7 '12 at 21:54
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Client-server synchronization pattern / algorithm?
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May you sir explain what a delta exactly is? My guess would be that's a hash/timestamp combination ... I would like to hear from u sir.
– Anis
Dec 18 '16 at 13:59
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invalid multibyte char (US-ASCII) with Rails and Ruby 1.9
I'm using Ruby 1.9.1 with Rails 2.3.4 My application is to handle text input
6 Answers
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jquery data selector
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In my case it's fine since I'm pre-populating the field on the server side and only need to consult it this way on initial load. Filter is probably just as fast (each is almost certainly slower) but this wins on readability.
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When to use PNG or JPG in iPhone development?
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On my current project, we have very large png files because of a transparency requirement. The disk IO greatly outweighs the time spent decoding a jpeg. Keep in mind PNGs are compressed also, just using a different algorithm.
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What is code coverage and how do YOU measure it?
...robably write tests for. For example, if whatever code-coverage tool shows myImportantFunction() isn't executed while running my current unit-tests, they should probably be improved.
Basically, 100% code-coverage doesn't mean your code is perfect. Use it as a guide to write more comprehensive (unit...
How to easily resize/optimize an image size with iOS?
My application is downloading a set of image files from the network, and saving them to the local iPhone disk. Some of those images are pretty big in size (widths larger than 500 pixels, for instance). Since the iPhone doesn't even have a big enough display to show the image in its original size, I'...