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What does @: (at symbol colon) mean in a Makefile?

...nd nothing gets done. For example (from Linux's scripts/Makefile.clean): __clean: $(subdir-ymn) ifneq ($(strip $(__clean-files)),) +$(call cmd,clean) endif ifneq ($(strip $(__clean-dirs)),) +$(call cmd,cleandir) endif ifneq ($(strip $(clean-rule)),) +$(clean-rule) endif @: ...
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Getting the current page

...ewController: UIScrollViewDelegate { func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) { let width = scrollView.frame.width let page = Int(round(scrollView.contentOffset.x/width)) print("CurrentPage:\(page)") } } ...
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How to implement a queue using two stacks?

... Keep 2 stacks, let's call them inbox and outbox. Enqueue: Push the new element onto inbox Dequeue: If outbox is empty, refill it by popping each element from inbox and pushing it onto outbox Pop and return the top element from outbox Usin...
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Does a `+` in a URL scheme/host/path represent a space?

...but any + characters in the path component is expected to be treated literally. To be explicit: + is only a special character in the query component. share | improve this answer | ...
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How to do scanf for single char in C [duplicate]

... The %c conversion specifier won't automatically skip any leading whitespace, so if there's a stray newline in the input stream (from a previous entry, for example) the scanf call will consume it immediately. One way around the problem is to put a blank space before t...
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InputStream from a URL

... Calling this method in UI thread in Android will raise an exception. Do it in a background thread. Use Bolts-Android – Behrouz.M Mar 6 '19 at 10:16 ...
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Templated check for the existence of a class member function?

... Although, I used the following for 'one' and 'two': typedef char Small; class Big{char dummy[2];} to ensure no ambiguity about platform dependent variable size. – user23167 Nov 2 '08 at 21:40 ...
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Hidden Features of JavaScript? [closed]

...ert it to a real array if you want: "var argArray = Array.prototype.slice.call(arguments);" ) – Jacob Mattison Jan 26 '09 at 21:37 51 ...
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Unit test naming best practices [closed]

... the method name and in a structured manner. The unit of work can be as small as a single method, a class or as large as multiple classes. It should represent all the things that are to be tested in this test case and are under control. For assemblies I use the typical .Tests ending, which I think...
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Microsoft CDN for jQuery or Google CDN? [closed]

Does it actually matter which CDN you use to link to your jquery file or any javascript file for that matter. Is one potentially faster than the other? What other factors could play a role in which cdn you decide to use? I know that Microsoft, Yahoo, and Google all have CDN's now. ...