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When would anyone use a union? Is it a remnant from the C-only days?
...nly two guesses would be programming microprocessors when you have very limited space to work with, or when you're developing an API (or something similar) and you want to force the end user to have only one instance of several objects/types at one time. Are these two guesses even close to right?
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Simple argparse example wanted: 1 argument, 3 results
...to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" .
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Downloading a Google font and setting up an offline site that uses it
I have a template and it has a reference to a Google font like this:
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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...s> element, I would like to load an image file (PNG, JPEG, etc.), draw it to the canvas completely transparently, and then fade it in. I have figured out how to load the image and draw it to the canvas, but I don't know how to change its opacity once it as been drawn.
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What's the difference between git clone --mirror and git clone --bare
The git clone help page has this to say about --mirror :
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How to have conditional elements and keep DRY with Facebook React's JSX?
...JSX? Here is an example using a banner that should be in the component if it has been passed in. What I want to avoid is having to duplicate HTML tags in the if statement.
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“tag already exists in the remote" error after recreating the git tag
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Edit, 24 Nov 2016: this answer is apparently popular, so I am adding a note here. If you replace a tag on a central server, anyone who has the old tag—any clone of that central-server repository that already has the tag—co...
How can you make a custom keyboard in Android?
I want to make a custom keyboard. I don't know how to do it using XML and Java. The following picture is a model of the keyboard I want to make. It only needs numbers.
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
...aken a look under the hood at the jQuery 1.4 source code and noticed how it's encapsulated in the following way:
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Redeploy alternatives to JRebel [closed]
JRebel allows for newly compiled code to be redeployed without restarting the application. I am wondering if there are any alternative (free?). The FAQ page answers this question, but I am sure it's biased towards JRebel. This question was asked a year ago on this site, but I am bringing it ba...