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How exactly does the python any() function work?
...[0, False, '', 0.0, [], {}, None] (which all have boolean values of False) then any(lst) would be False. If lst also contained any of the following [-1, True, "X", 0.00001] (all of which evaluate to True) then any(lst) would be True.
In the code you posted, x > 0 for x in lst, this is a differen...
Get login username in java
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@ChinmayKanchi: If there's no username, then the user.name property should just be null. I agree with @JinKim, don't write OS-dependent stuff.
– L S
Oct 26 '11 at 15:25
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How to turn IDENTITY_INSERT on and off using SQL Server 2008?
...mn. Or set it if you want in your app if you want to send a value..... but then why have a column with the identity property set to generate values? We can't decide for you
– gbn
Aug 15 '11 at 10:01
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How do I implement IEnumerable
... You might as well inherit from Collection<MyObject> and then you won't have to write any custom code.
– John Alexiou
Oct 2 '18 at 21:23
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Django ModelForm: What is save(commit=False) used for?
...ds with non-form data.
Saving with commit=False gets you a model object, then you can add your extra data and save it.
This is a good example of that situation.
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Are Exceptions in C++ really slow
...ted I was on my way to the doctor, with a taxi waiting, so I only had time then for a short comment. But having now commented and upvoted and downvoted I’d better add my own answer. Even if Matthieu’s answer already is pretty good.
Are exceptions especially slow in C++, compared to other lang...
Mapping two integers to one, in a unique and deterministic way
... you don't want to make a distinction between the pairs (a, b) and (b, a), then sort a and b before applying the pairing function.
Actually I lied. You are looking for a bijective ZxZ -> N mapping. Cantor's function only works on non-negative numbers. This is not a problem however, because it's e...
How to define custom exception class in Java, the easiest way?
...ou meant by 'they' are superclass constructors and by 'where' is subclass, then you are wrong. Superclass constructors are not implicitly added to subclass. Plus I can't see any other subject in the previous sentences for those words to refer.
– halil
Nov 1 '16...
Wait for page load in Selenium
...e old page. What you need to do is wait for the current page to unload and then call your above code. A way to detect page unload is to get a webelement on the current page and wait till it becomes stale. obeythetestinggoat.com/…
– George
Feb 6 '15 at 17:38
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Test for multiple cases in a switch, like an OR (||)
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When the switch executes, it finds the first matching case statement and then executes each line of code after the switch until it hits either a break statement or the end of the switch (or a return statement to leave the entire containing function). When you deliberately omit the break so that co...