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How to check if all list items have the same value and return it, or return an “otherValue” if they
... It gets worse when you have one-time iteration like reading from file... So Ani's answer from other thread looks the best.
– Alexei Levenkov
Dec 8 '10 at 18:20
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How to find if a given key exists in a C++ std::map
...urn 1 (if the element is found) or zero (otherwise)."
To retrieve a value from the map via a key that you know to exist, use map::at:
value = m.at(key)
Unlike map::operator[], map::at will not create a new key in the map if the specified key does not exist.
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Setting DEBUG = False causes 500 Error
...ror. Turns out I needed to run collectstatic to collect some static assets from a package.
– themessup
May 12 '19 at 13:38
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Can “this” ever be null in Java?
...d (§15.12), or to the object being constructed.
If you invoked a method from an object, then the object exists or you would have a NullPointerException before (or it's a static method but then, you can't use this in it).
Resources :
JLS - this keyword
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Scroll Element into View with Selenium
... next bit of the page after scrolling, among other possibilities. Speaking from experience, Selenium has frequently broken my company's site because the automated action occurred faster than the Javascript could complete, and thus passed an incomplete data model. Some places may consider it a bug, b...
Can I use the range operator with if statement in Swift?
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@Sky: From the generated assembly code one can see that a library function func ~= (Range<A>, A) -> Bool is called. I would assume that this function works with O(1).
– Martin R
Jul 2...
What is the point of function pointers?
... differently by passing different callback functions. A classic is qsort() from the C standard library that takes its sorting criterion as a pointer to a comparison function.
In C++, this is often done using function objects (also called functors). These are objects that overload the function call...
How to obtain a Thread id in Python?
...y self.pid with it's pid everytime I launch the thread? Tried os.kill(pid) from inside the own thread, it just stops all the threads including the main, must be done externally by the parent, but how to get that child pid from the parent?
– Rodrigo Formighieri
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How to set timeout for http.Get() requests in Golang?
...est because of the conn.SetDeadline which references a point in the future from time.Now()
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Disable LESS-CSS Overwriting calc() [duplicate]
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Apart from using an escaped value as described in my other answer, it is also possible to fix this issue by enabling the Strict Math setting.
With strict math on, only maths that are inside unnecessary parentheses will be processe...