大约有 44,700 项符合查询结果(耗时:0.0515秒) [XML]

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How to automatically generate N “distinct” colors?

... 82 You can use the HSL color model to create your colors. If all you want is differing hues (likel...
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Why is reading lines from stdin much slower in C++ than Python?

...ed together. For example: int myvalue1; cin >> myvalue1; int myvalue2; scanf("%d",&myvalue2); If more input was read by cin than it actually needed, then the second integer value wouldn't be available for the scanf function, which has its own independent buffer. This would lead to unexp...
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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?

...tiple courses, books, and jobs, I have seen text fields defined as VARCHAR(255) as kind of the default for "shortish" text. Is there any good reason that a length of 255 is chosen so often, other than being a nice round number ? Is it a holdout from some time in the past when there was a good rea...
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How to split the name string in mysql?

... I've seperated this answer into two(2) methods. The first method will separate your fullname field into first, middle, and last names. The middle name will show as NULL if there is no middle name. SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(fullname, ' ', 1), ...
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how to create a Java Date object of midnight today and midnight tomorrow?

...pare against dates from today at 00:00am (midnight early this morning) to 12:00pm (midnight tonight). 19 Answers ...
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“Diff” an image using ImageMagick

... 2 Answers 2 Active ...
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LINQ Using Max() to select a single row

... 233 I don't see why you are grouping here. Try this: var maxValue = table.Max(x => x.Status) ...
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Find object by id in an array of JavaScript objects

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Read values into a shell variable from a pipe

... | edited Apr 28 '14 at 9:19 fedorqui 'SO stop harming' 212k7373 gold badges432432 silver badges485485 bronze badges ...
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Set operations (union, intersection) on Swift array?

... Yes, Swift has the Set class. let array1 = ["a", "b", "c"] let array2 = ["a", "b", "d"] let set1:Set<String> = Set(array1) let set2:Set<String> = Set(array2) Swift 3.0+ can do operations on sets as: firstSet.union(secondSet)// Union of two sets firstSet.intersection(secondSet)...