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Use of *args and **kwargs [duplicate]

...u're not sure how many arguments might be passed to your function, i.e. it allows you pass an arbitrary number of arguments to your function. For example: >>> def print_everything(*args): for count, thing in enumerate(args): ... print( '{0}. {1}'.format(count, thing)) ... ...
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Difference between UTF-8 and UTF-16?

...c. occupy one byte which is identical to US-ASCII representation. This way all US-ASCII strings become valid UTF-8, which provides decent backwards compatibility in many cases. No null bytes, which allows to use null-terminated strings, this introduces a great deal of backwards compatibility too. UT...
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Search for a string in Enum and return the Enum

... @user1531040 Actually, there is an Enum.TryParse. – DarLom Nov 1 '17 at 21:14 ...
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What does ||= (or-equals) mean in Ruby?

...threads on the Ruby mailing-list whose only purpose is to collect links to all the other threads on the Ruby mailing-list that discuss this issue. Here's one: The definitive list of ||= (OR Equal) threads and pages If you really want to know what is going on, take a look at Section 11.4.2.3 "Abbrevi...
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Why charset names are not constants?

... Or maybe "UTF-8" ? When searching internet for code samples you will see all of the above. Why not just make them named constants and use Charset.UTF8 ? ...
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nginx error connect to php5-fpm.sock failed (13: Permission denied)

...or /etc/php/7.0/fpm/pool.d/www.conf, depending on your version. Uncomment all permission lines, like: listen.owner = www-data listen.group = www-data listen.mode = 0660 Restart fpm - sudo service php5-fpm restart or sudo service php7.0-fpm restart Note: if your webserver runs as user other than...
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Why is January month 0 in Java Calendar?

...e. I doubt whether anyone outside the original implementation team could really state reasons - but again, I'd urge readers not to worry so much about why bad decisions were taken, as to look at the whole gamut of nastiness in java.util.Calendar and find something better. One point which is in favo...
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UIButton: Making the hit area larger than the default hit area

... CGRectContainsPoint(hitFrame, point); } @end Once this class is added, all you need to do is set the edge insets of your button. Note that I chose to add the insets so if you want to make the hit area larger, you must use negative numbers. [button setHitTestEdgeInsets:UIEdgeInsetsMake(-10, -10...
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Parse JSON String into a Particular Object Prototype in JavaScript

...olution below that applies Object.assign(..) recursively that can automatically resolve properties (with a bit of information provided in advance) – vir us Dec 8 '17 at 16:13 ...
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AngularJS : Clear $watch

... $watch returns a deregistration function. Calling it would deregister the $watcher. var listener = $scope.$watch("quartz", function () {}); // ... listener(); // Would clear the watch share ...