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How to convert a Django QuerySet to a list
...er
Update with regard to the comment:
There are various ways to do this. One (which is probably not the best one in terms of memory and time) is to do exactly the same :
answer_ids = set(answer.id for answer in answers)
existing_question_answers = filter(lambda x: x.answer.id not in answers_id, e...
pass string parameter in an onclick function
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Hi @david..I have one doubt...I want to pass multiple argument in that onclick..how it possible? can you make useful for me..?
– VIVEK-MDU
Aug 22 '13 at 13:25
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How to check if an NSDictionary or NSMutableDictionary contains a key?
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Example one in this answer is slow.
– James Van Boxtel
Jun 23 '11 at 17:31
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__getattr__ on a module
...ort time) should be no longer necessary.
In Python 3.7+, you just use the one obvious way. To customize attribute access on a module, define a __getattr__ function at the module level which should accept one argument (name of attribute), and return the computed value or raise an AttributeError:
#...
What is the explicit promise construction antipattern and how do I avoid it?
...ain with .then and you can return promises directly. Your code in getStuffDone can be rewritten as:
function getStuffDone(param){
return myPromiseFn(param+1); // much nicer, right?
}
Promises are all about making asynchronous code more readable and behave like synchronous code without hiding ...
How does TransactionScope roll back transactions?
...Transaction Scope) and if so enlist with it. Caution if there are more the one connection to the same SQL server this will escalate to a Distribtued Transaction.
What happens since you're using a using block you are ensuring dispose will be called even if an exception occurs. So if dispose is call...
What does the leading semicolon in JavaScript libraries do?
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It allows you to safely concatenate several JavaScript files into one, to serve it quicker as one HTTP request.
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Draw line in UIView
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Does one not need to call CGContextBeginPath(context); before CGContextMoveToPoint(...);?
– i_am_jorf
Nov 9 '11 at 18:38
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Why is an int in OCaml only 31 bits?
...onstruct a new integer object to hold the result.
So, in order to perform one integer addition, you actually need to perform three integer additions plus two pointer dererefences plus one object construction. And you take up almost 20 Byte.
However, the trick is that with so-called immutable value...
How to minify php page html output?
...from textarea, pre, input, img also this breaks inline javascripts. if someone is not happy to use bulky class with DOM parsing this solution based on regexp works great
– Peter
Oct 12 '15 at 9:26
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