大约有 15,000 项符合查询结果(耗时:0.0383秒) [XML]

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Why doesn't Dictionary have AddRange?

...ut in a manner that fits with the Framework guidelines. AddRange doesn't exist because a range doesn't have any meaning to an associative container, as the range of data allows for duplicate entries. E.g if you had an IEnumerable<KeyValuePair<K,T>> that collection does not guard against...
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What is an NP-complete in computer science?

...vable in realistic time. Edit: As others have noted, there are often approximate solutions for NP-Complete problems. In this case, the approximate solution usually gives an approximation bound using special notation which tells us how close the approximation is. ...
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Pass Variables by Reference in Javascript

...orld" You can iterate over the properties of an array with a numeric index and modify each cell of the array, if you want. var arr = [1, 2, 3]; for (var i = 0; i < arr.length; i++) { arr[i] = arr[i] + 1; } It's important to note that "pass-by-reference" is a very specific term. It doe...
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Build android release apk on Phonegap 3.x CLI

How can I build an android app locally using the Phonegap 3.x CLI, ready to release? I check the bin folder generated inside the platforms/android directory of the project, and only has .debug APKs. ...
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Obfuscated C Code Contest 2006. Please explain sykes2.c

...p; main(-~_); putchar(--_%64 ? 32 | -~7[__TIME__-_/8%8][">'txiZ^(~z?"-48] >> ";;;====~$::199"[_*2&8|_/64]/(_&2?1:8)%8&1 : 10); } Introducing variables to untangle this mess: main(int i) { if(i^448) main(-~i); if(--i % 64) { char a =...
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Show the progress of a Python multiprocessing pool imap_unordered call?

...mport division import sys for i, _ in enumerate(p.imap_unordered(do_work, xrange(num_tasks)), 1): sys.stderr.write('\rdone {0:%}'.format(i/num_tasks)) share | improve this answer | ...
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how to return index of a sorted list? [duplicate]

I need to sort a list and then return a list with the index of the sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned. ...
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How do I decode HTML entities in Swift?

...eknd ‘King Of The Fall’ let decodedString = attributedString.string extension String { init?(htmlEncodedString: String) { guard let data = htmlEncodedString.data(using: .utf8) else { return nil } let options: [NSAttributedString.DocumentReadingOptionK...
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Code equivalent to the 'let' keyword in chained LINQ extension method calls

...s off of Select. You can see this if you use "reflector" to pull apart an existing dll. it will be something like: var result = names .Select(animalName => new { nameLength = animalName.Length, animalName}) .Where(x=>x.nameLength > 3) .OrderBy(x=>x.nameLength) ...
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Linq Query keeps throwing “Unable to create a constant value of type System.Object…”, Why?

... Can you please explain the difference between "t.CustID == custIdToQuery" and "t.CustID.Equals(custIdToQuery)". thanks in advance – Neel Jan 4 '11 at 10:20 ...