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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?

... you can actually look at the .net source for it now too: referencesource.microsoft.com/#mscorlib/system/collections/… you can see that all 3 of TryGetValue, ContainsKey, and this[] call the same FindEntry method and do the same amount of work, only differing in how they...
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MySQL get the date n days ago as a timestamp

...B will do part of it depending on what you want mysql> SELECT DATE_SUB(NOW(), INTERVAL 30 day); 2009-06-07 21:55:09 mysql> SELECT TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day)); 2009-06-07 21:55:09 mysql> SELECT UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day)); 1244433347 ...
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Can I export a variable to the environment from a bash script without sourcing it?

... is to source the variable: . ./export.bash or source ./export.bash Now when echoing from main shell it works echo $VAR HELLO, VARABLE We will now reset VAR export VAR="" echo $VAR Now we will execute a script to source the variable then unset it : ./test-export.sh HELLO, VARABLE -- ...
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Why is this inline-block element pushed downward?

...shed downward rather than pulling it upward by one way or another. (and I know how to align their tops :)) 8 Answers ...
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Duplicate log output when using Python logging module

...r = logging.getLogger(name) logger.setLevel(logging.DEBUG) now = datetime.datetime.now() handler = logging.FileHandler( '/root/credentials/Logs/ProvisioningPython' + now.strftime("%Y-%m-%d") + '.log') formatter = logging.Formatter...
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How to convert DateTime? to DateTime

...ode. DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate ?? DateTime.Now; share | improve this answer | follow | ...
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How do I get a Cron like scheduler in Python? [closed]

... self.events = events def run(self): t=datetime(*datetime.now().timetuple()[:5]) while 1: for e in self.events: e.check(t) t += timedelta(minutes=1) while datetime.now() < t: time.sleep((t - datetime.now...
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Python loop that also accesses previous and next values

... Solutions until now only deal with lists, and most are copying the list. In my experience a lot of times that isn't possible. Also, they don't deal with the fact that you can have repeated elements in the list. The title of your question s...
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JavaScript: How to find out if the user browser is Chrome?

...heck if browser is Google Chrome, try this: // please note, // that IE11 now returns undefined again for window.chrome // and new Opera 30 outputs true for window.chrome // but needs to check if window.opr is not undefined // and new IE Edge outputs to true now for window.chrome // and if not iOS ...
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Is JavaScript a pass-by-reference or pass-by-value language?

...itive types (number, string, etc.) are passed by value, but objects are unknown, because they can be both passed-by-value (in case we consider that a variable holding an object is in fact a reference to the object) and passed-by-reference (when we consider that the variable to the object holds the o...