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If string is empty then return some default value

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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How can one close HTML tags in Vim quickly?

...out.. closetag.vim Functions and mappings to close open HTML/XML tags https://www.vim.org/scripts/script.php?script_id=13 I use something similar. share | improve this answer | ...
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apt-get for Cygwin?

... @CodeMonkey The repo is back up, along with it's competitor: Sage – Brian Brownton Apr 8 '16 at 4:13 add a comment  |  ...
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surface plots in matplotlib

...y.meshgrid() is a simple way to get 2d x,y mesh out of 1d x and y values. http://matplotlib.sourceforge.net/mpl_examples/mplot3d/surface3d_demo.py here's pythonic way to convert your 3-tuples to 3 1d arrays. data = [(1,2,3), (10,20,30), (11, 22, 33), (110, 220, 330)] X,Y,Z = zip(*data) In [7]: X ...
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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?

...ameter2: %f", parameter1, parameter2); }); More: https://developer.apple.com/documentation/dispatch/1452876-dispatch_after share | improve this answer | follow ...
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Provide an image for WhatsApp link sharing

...ll link to the current webpage address <meta property="og:url" content="https://www.example.com/webpage/" /> Step 5: og:description Maximum 65 characters <meta property="og:description" content="description of your website/webpage"> Step 6: og:image Image(JPG or PNG) with a size less...
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Random record from MongoDB

...or older versions (previous answer) This was actually a feature request: http://jira.mongodb.org/browse/SERVER-533 but it was filed under "Won't fix." The cookbook has a very good recipe to select a random document out of a collection: http://cookbook.mongodb.org/patterns/random-attribute/ To p...
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Unresolved external symbol on static class members

... If you are using C++ 17 you can just use the inline specifier (see https://stackoverflow.com/a/11711082/55721) If using older versions of the C++ standard, you must add the definitions to match your declarations of X and Y unsigned char test::X; unsigned char test::Y; somewhere. You might...
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How to wait for several Futures?

... You could use a for-comprehension as follows instead: val fut1 = Future{...} val fut2 = Future{...} val fut3 = Future{...} val aggFut = for{ f1Result <- fut1 f2Result <- fut2 f3Result <- fut3 } yield (f1Result, f2Result, f3Resul...
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Dynamically load JS inside JS [duplicate]

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