大约有 40,000 项符合查询结果(耗时:0.0632秒) [XML]
asynchronous vs non-blocking
...rs" your attempt to call it: the only reason for the API to remember is in order to call you back. If you're going to be calling it to re-poll, then you already have to maintain the necessary state to know to make that subsequent call, so the API would add no value by also maintaining state.
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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
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To summarize what is being suggested as the "proper" termination and read order is the following:
int data;
while(in >> data) { /* ... */ }
// which is equivalent to
while( !(in >> data).fail() ) { /* ... */ }
The failure due to read attempt beyond eof is taken as the terminatio...
Is a statically-typed full Lisp variant possible?
...common in Lisp. Their supertype in Lisp is simply called t (i.e. top).
In order to use them, you'd have to come up with mechanisms to dynamically coerce the value of an atom to something you can actually use. And at that point, you've basically implemented a dynamically typed subsystem within your ...
Check list of words in another string [duplicate]
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@Ockonal: and if you want to check that all words from that list are inside the string, just replace any() above with all()
– Nas Banov
Jul 17 '10 at 23:23
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Android: how to make an activity return results to the activity which calls it?
... activity that can be called from many activities, such as Sign up and Order . In the Location activity the user enters his location, so the activity Location will return this new location to that activity which called it.
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“x not in y” or “not x in y”
... think of not x in xs is not (x in xs). But the fact that it's implemented by parsing it into precisely the same bytecode as x not in xs very clearly shows that they must be always identical, as opposed to things like not x == y vs x != y which should give the same result, but don't have to (dependi...
Python Graph Library [closed]
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I just evaluated both. networkx is installable via pip, whereas igraph is not. This makes igraph harder to use as dependencies in your setup.py files.
– exhuma
Aug 10 '12 at 7:46
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Using an integer as a key in an associative array in JavaScript
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yes, but when iterating they're not in any particular order (i.e. order is not guaranteed), which would be the point of numbering them, so it's a lot worse than just confusing.
– Julix
Jan 3 '17 at 5:43
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How to recover stashed uncommitted changes
... index. Try without --index.
You're using git stash save --keep-index in order to test "what will be committed". This one is beyond the scope of this answer; see this other StackOverflow answer instead.
For complicated cases, I recommend starting in a "clean" working directory first, by committ...
In Python, what is the difference between “.append()” and “+= []”?
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In general case append will add one item to the list, while += will copy all elements of right-hand-side list into the left-hand-side list.
Update: perf analysis
Comparing bytecodes we can assume that append version wastes cycles in LOAD_ATTR + CALL_FUNCTION, and += version -- in BUILD_LIST. App...
