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What do all of Scala's symbolic operators mean?

...se of teaching, into four categories: Keywords/reserved symbols Automatically imported methods Common methods Syntactic sugars/composition It is fortunate, then, that most categories are represented in the question: -> // Automatically imported method ||= // Syntactic sugar ++= // Syn...
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Compare dates in MySQL

... You can try below query, select * from players where us_reg_date between '2000-07-05' and DATE_ADD('2011-11-10',INTERVAL 1 DAY) share | im...
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What are some (concrete) use-cases for metaclasses?

...a couple functions I found that I was able to increment the figure count, call draw manually, etc, but I needed to do these before and after every plotting call. So to create both an interactive plotting wrapper and an offscreen plotting wrapper, I found it was more efficient to do this via metacla...
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Securely storing environment variables in GAE with app.yaml

...set them. Here is how: Go to https://console.cloud.google.com/datastore/ Select your project at the top of the page if it's not already selected. In the Kind dropdown box, select Settings. If you ran the code above, your keys will show up. They will all have the value NOT SET. Click each one and s...
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What is the purpose of the -m switch?

Could you explain to me what the difference is between calling 3 Answers 3 ...
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Displaying build times in Visual Studio?

...uild Projects (e.g. all .Net-Projects): Click Tools -> Options and then select Projects and Solutions -> Build and Run. Change MSBuild project build output verbosity to Normal. So it will display Time Elapsed in every Solution Project it builds. But there is unfortunatily no Elapsed Time Sum ...
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Composer Warning: openssl extension is missing. How to enable in WAMP

... Answer also works for EasyPHP (right-click system tray EasyPHP icon, select Configuration | PHP, which opens php.ini in Notepad, search for openssl, uncomment the line) – stifin Jan 21 '15 at 12:57 ...
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How can I exclude one word with grep?

... -v or --invert-match select non-matching lines. In your case grep -v 'unwanted_word' file or grep --invert-match 'unwanted_word' file. – adamski.pro Nov 29 '16 at 7:10 ...
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Convert Django Model object to dict with all of the fields intact

How does one convert a Django Model object to a dict with all of its fields? All ideally includes foreign keys and fields with editable=False . ...
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How to simulate Android killing my process

...at window in Android Studio (this will kill the app process, make sure you select your device and process in Logcat dropdowns at top) Get back to the application with Home long press or opened apps (depends on the device) Application will start in recreated ActivityD (ActivityA, ActivityB, ActivityC...