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Why are dashes preferred for CSS selectors / HTML attributes?

In the past I've always used underscores for defining class and id attributes in HTML. Over the last few years I changed over to dashes, mostly to align myself with the trend in the community , not necessarily because it made sense to me. ...
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Checking for NULL pointer in C/C++ [closed]

...ol NULL. They do not expose the opportunity for the accidental assignment. And they are clear and succinct. Edit: As SoapBox points out in a comment, they are compatible with C++ classes such as auto_ptr that are objects that act as pointers and which provide a conversion to bool to enable exactly...
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How to break/exit from a each() function in JQuery? [duplicate]

... simple 'return' is not working for me. this is why i googled it and found this post. 'return false' works. i am running osx lion with chrome. – Sonic Soul Jun 9 '12 at 23:17 ...
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how to use python to execute a curl command

I want to execute a curl command in python. 7 Answers 7 ...
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Center a popup window on screen?

...: It will also work on windows that aren't maxed out to the screen's width and height now thanks to @Frost! If you're on dual monitor, the window will center horizontally, but not vertically... use this function to account for that. const popupCenter = ({url, title, w, h}) => { // Fixes dua...
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deciding among subprocess, multiprocessing, and thread in Python?

... simple, in that all the parallel "threads" of the program are independent and write their output to separate files. I don't need the threads to exchange information but it is imperative that I know when the threads finish since some steps of my pipeline depend on their output. ...
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How does the Comma Operator work

...itializers for symbol tables. Thus, it makes the following syntax possible and meaningful: keywords = "and", "or", "not", "xor"; Notice that due to operator precedence, the code is (intentionally!) identical to (((keywords = "and"), "or"), "not"), "xor"; That is, the first operator called is k...
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“icon-bar” in twitter bootstrap navigation bar

I cannot understand what the following code means in terms of icon-bar : 3 Answers 3 ...
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Set the layout weight of a TextView programmatically

I'm trying to dynamically create TableRow objects and add them to a TableLayout . The TableRow objects has 2 items, a TextView and a CheckBox . The TextView items need to have their layout weight set to 1 to push the CheckBox items to the far right. ...
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Delete all tags from a Git repository

...sophy where you pipe everything. On Windows use git bash with the same command. share | improve this answer | follow | ...