大约有 41,500 项符合查询结果(耗时:0.0632秒) [XML]

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How to wait for all goroutines to finish without using time.Sleep?

... answered Aug 13 '13 at 11:25 zzzzzzzz 67.5k1414 gold badges154154 silver badges127127 bronze badges ...
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Check whether a string matches a regex in JS

...,})$/.test('abc12')); // true console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true ...and you could remove the () from your regexp since you've no need for a capture. share | improve th...
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How to determine if a decimal/double is an integer?

...ecimal point. public static void Main (string[] args) { decimal d = 3.1M; Console.WriteLine((d % 1) == 0); d = 3.0M; Console.WriteLine((d % 1) == 0); } Output: False True Update: As @Adrian Lopez mentioned below, comparison with a small value epsilon will discard floating-poi...
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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?

... ab.put(i%50, sum); bb.put(i%50, sum); } long t3 = System.nanoTime(); System.out.println("dot(): " + (t2 - t1)/10000000 + " ns"); System.out.println("dotc(): " + (t3 - t2)/10000000 + " ns"); } } and Dot.h: float ac[50], bc[50]; inline float dotc()...
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Database development mistakes made by application developers [closed]

...database design? Are foreign keys really necessary in a database design? 3. Using natural rather than surrogate (technical) primary keys Natural keys are keys based on externally meaningful data that is (ostensibly) unique. Common examples are product codes, two-letter state codes (US), social s...
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How to measure time taken by a function to execute

... 1863 Using performance.now(): var t0 = performance.now() doSomething() // <---- The function ...
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C++ IDE for Macs [closed]

... | edited Oct 13 '16 at 20:34 Lidakis Emmanuel 1,02588 silver badges1111 bronze badges answer...
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Get last record in a queryset

... | edited Feb 3 '10 at 11:29 Dominic Rodger 87.2k2828 gold badges185185 silver badges205205 bronze badges ...
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any tool for java object to object mapping? [closed]

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How do I properly compare strings in C?

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