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How do I do base64 encoding on iOS?
I'd like to do base64 encoding and decoding, but I could not find any support from the iPhone SDK . How can I do base64 encoding and decoding with or without a library?
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Python: Select subset from list based on index set
I have several lists having all the same number of entries (each specifying an object property):
5 Answers
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With bash, how can I pipe standard error into another process?
...s also process substitution. Which makes a process substitute for a file.
You can send stderr to a file as follows:
process1 2> file
But you can substitute a process for the file as follows:
process1 2> >(process2)
Here is a concrete example that sends stderr to both the screen and a...
Why is extending native objects a bad practice?
Every JS opinion leader says that extending the native objects is a bad practice. But why? Do we get a perfomance hit? Do they fear that somebody does it "the wrong way", and adds enumerable types to Object , practically destroying all loops on any object?
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Why are quaternions used for rotations?
I'm a physicist, and have been learning some programming, and have come across a lot of people using quaternions for rotations instead of writing things in matrix/vector form.
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How to run only one task in ansible playbook?
Is there a way to only run one task in ansible playbook?
6 Answers
6
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Indent starting from the second line of a paragraph with CSS
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Is it literally just the second line you want to indent, or is it from the second line (ie. a hanging indent)?
If it is the latter, something along the lines of this JSFiddle would be appropriate.
div {
padding-left: 1.5...
How do I apply a perspective transform to a UIView?
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As Ben said, you'll need to work with the UIView's layer, using a CATransform3D to perform the layer's rotation. The trick to get perspective working, as described here, is to directly access one of the matrix cells of the CATransform3D ...
How to sort an IEnumerable
How can I sort an IEnumerable<string> alphabetically. Is this possible?
4 Answers
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What is Gradle in Android Studio?
Gradle is a bit confusing to me, and also for any new Android developer. Can anyone explain what Gradle in Android Studio is and what its purpose is? Why is it included in Android Studio?
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