大约有 45,000 项符合查询结果(耗时:0.0704秒) [XML]

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Find nearest latitude/longitude with an SQL query

... 219 SELECT latitude, longitude, SQRT( POW(69.1 * (latitude - [startlat]), 2) + POW(69.1 * ...
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Why can I change value of a constant in javascript

...nst x = {}; x.foo = 'bar'; console.log(x); // {foo : 'bar'} x.foo = 'bar2'; console.log(x); // {foo : 'bar2'} and this: const y = []; y.push('foo'); console.log(y); // ['foo'] y.unshift("foo2"); console.log(y); // ['foo2', 'foo'] y.pop(); console.log(y); // ['foo2'] but neither of...
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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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Get exit code of a background process

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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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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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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 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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Find object by id in an array of JavaScript objects

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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) ...