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Does use of final keyword in Java improve the performance?
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Usually not. For virtual methods, HotSpot keeps track of whether the method has actually been overridden, and is able to perform optimizations such as inlining on the assumption that a method hasn't been overridden - until it lo...
How to cancel an $http request in AngularJS?
...efer();
$http.get('/someUrl', {timeout: canceler.promise}).success(successCallback);
// later...
canceler.resolve(); // Aborts the $http request if it isn't finished.
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How to update SQLAlchemy row entry?
...SERIALIZABLE transaction isolation-level, but to my understanding it would allow performing the addition in Python using the in-place addition. If there is a race, one of the transactions will then succeed and the others will fail and must retry (with the new state of the DB). But I might've misunde...
BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
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0x1 BLE概述“蓝牙”，即Bluetooth，是斯堪的纳维亚语中 Blåtand / Blåtann 的英化版本。该词是十世纪的一位国王Harald Bluetooth的绰号，相传他将纷争不断的丹麦部落统一为一个王国，并引入了基督教。蓝牙技术开发者Jim Kardach于1997...
Java : How to determine the correct charset encoding of a stream
...ed but it greatly fails: i made 2 text files in eclipse both containing "öäüß". One set to iso encoding and one to utf8 - both are detected as utf8! So i tried a file safed somewhere on my hd (windows) - this one was detected correctly ("windows-1252"). Then i created two new file on hd one one ...
u'\ufeff' in Python string
...परीक्षा|പരിശോധന|פּרובירן|kiểm tra|Ölçek|'
e8 = u.encode('utf-8') # encode without BOM
e8s = u.encode('utf-8-sig') # encode with BOM
e16 = u.encode('utf-16') # encode with BOM
e16le = u.encode('utf-16le') # encode without BOM
e16be = u.encode('ut...
What is the best django model field to use to represent a US dollar amount?
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I think this example is correct almost to all currencies. To represent currencies as Bitcoin, I think is much better to use an integer field to save the amount in satoshis, and then show it to the final user in the representation that you want (BTC, mBTC, etc)
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Remove an item from a dictionary when its key is unknown
...wn. This answer assumes the key is known.
– Jean-François Corbett
Aug 8 '18 at 17:16
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Print list without brackets in a single row
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print(', '.join(names))
This, like it sounds, just takes all the elements of the list and joins them with ', '.
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How to check if a String contains another String in a case insensitive manner in Java?
...INSENSITIVE, this works only for ASCII characters (i.e., "Ä" won't match "ä"). One needs to additionally specify the UNICODE_CASE flag to achive that.
– Philipp Wendler
May 15 '12 at 14:49
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