大约有 31,840 项符合查询结果（耗时：0.0440秒） [XML]
What do numbers using 0x notation mean?
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@Luc The first one is correct. Although more often I see just 0xffffffff and such. (0xffffffff = -1 for 32-bit int assuming 2's complement)
– Mysticial
Jul 23 '13 at 16:30
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Detect when browser receives file download
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One possible solution uses JavaScript on the client.
The client algorithm:
Generate a random unique token.
Submit the download request, and include the token in a GET/POST field.
Show the "waiting" indicator.
Start a timer...
How do I convert an enum to a list in C#? [duplicate]
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Anyone considering this, please note that the performance of ToString() on an enum is terrible, internally it uses reflection. It's 1000x slower (no exaggeration) than a string -> enum lookup table.
– Ni...
Git diff to show only lines that have been modified
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Nice one. Upvote for the clear explanation on each filter.
– henrebotha
Oct 25 '17 at 15:26
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Timer function to provide time in nano seconds using C++
...lt in these routines returning
different values as the thread moves from one processor to another...
However this StackOverflow answer https://stackoverflow.com/a/4588605/34329 states that QPC should work fine on any MS OS after Win XP service pack 2.
This article shows that Windows 7 can deter...
How to check if an email address exists without sending an email?
...ery some time later. This will mess up attempts to validate the address.
Honestly, if you're attempting to validate an address the best approach is to use a simple regex to block obviously invalid addresses, and then send an actual email with a link back to your system that will validate the email ...
What's a good Java, curses-like, library for terminal applications? [closed]
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Nice one, too bad though that it requires native libraries. I'll give this a shot and see how far I get.
– Francisco Canedo
Jan 16 '09 at 12:03
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What is the difference between isinstance('aaa', basestring) and isinstance('aaa', str)?
...icode) can represent characters from any alphabet including some fictional ones like Klingon.
So why have two kinds of strings, would it not be better to just have Unicode since that would cover all the cases? Well it is better to have only Unicode but Python was created before Unicode was the pref...
TFS: Updating branch with changes from main
... when other changes had been made since last checkout.
After the merge is done, all the changes are in your local copy of the branch, but they are not yet committed to source control. Once you've completed all your builds and testing on your branch, you can check in the merge. From Visual Studio:
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Best way to merge two maps and sum the values of same key?
...ou can come up with some operation that combines two maps to produce a new one which is somehow the combination of the two inputs.
If there are no keys that appear in both maps, this is trivial. If the same key exists in both maps, then we need to combine the two values that the key maps to. Hmm,...