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Storing JSON in database vs. having a new column for each key

...rmant JSON types that can store arbitrary documents, including support for indexing specific keys of the JSON object. However, I still stand by my original statement that your default preference, when using a relational database, should still be column-per-value. Relational databases are still buil...
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Replace transparency in PNG images with white background

...ings with Image Magick "convert" operations, but either nothing happens at all or I get an error. I don't want to go to an intermediate JPG form because I don't want the artifacts. Of course it's easy to do this in Gimp or Photoshop or whatever, but I'd really rather script it from the command lin...
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Is there a way to check which CSS styles are being used or not used on a web page?

... Install the CSS Usage add-on for Firebug and run it on that page. It will tell you which styles are being used and not used by that page. share ...
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Sort array of objects by string property value

... is it possible to use a index as well to address the field for sorting: instead of last_nom use just the number in the array: 1 ? – and-bri May 29 '17 at 18:15 ...
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Is there a good JavaScript minifier? [closed]

... You can use UglifyJS online without the need to install it - jscompress.com . +1 for the product used by jQuery – TMS Oct 27 '13 at 14:13 ...
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How to split a String by space

...g", " "); String[] splited = new String[tokens.countTokens()]; int index = 0; while(tokens.hasMoreTokens()){ splited[index] = tokens.nextToken(); ++index; } share | ...
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Get Character value from KeyCode in JavaScript… then trim

... Readable key names indexed by key code There are relatively few key codes so I simply listed all the corresponding values in a static array so I could simply convert the number 65 into A using keyboardMap[65] Not all key codes map to a printa...
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How do I remove newlines from a text file?

I have the following data, and I need to put it all into one line. 19 Answers 19 ...
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Numpy array dimensions

...tics definition of dimension* Out[3]: 2 axis/axes the nth coordinate to index an array in Numpy. And multidimensional arrays can have one index per axis. In [4]: a[1,0] # to index `a`, we specific 1 at the first axis and 0 at the second axis. Out[4]: 3 # which results in 3 (locate at the row 1...
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Remove new lines from string and replace with one empty space

Want to remove all new lines from string. 19 Answers 19 ...