大约有 19,000 项符合查询结果(耗时:0.0406秒) [XML]

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Why is a round-trip conversion via a string not safe for a double?

... string with a trailing zero is not exactly equal to one without -- in the former, the zero is a significant digit and adds precision. – cHao Jun 20 '14 at 1:15 4 ...
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Is Java Regex Thread Safe?

...32 Sam 6,01244 gold badges3838 silver badges5252 bronze badges answered Sep 1 '09 at 1:14 Vineet ReynoldsVinee...
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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting

...9]) >>> numpy.polyfit(x, numpy.log(y), 1) array([ 0.10502711, -0.40116352]) # y ≈ exp(-0.401) * exp(0.105 * x) = 0.670 * exp(0.105 * x) # (^ biased towards small values) >>> numpy.polyfit(x, numpy.log(y), 1, w=numpy.sqrt(y)) array([ 0.06009446, 1.41648096]) # y ≈ exp(1.4...
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Zoom in on a point (using scale and translate)

... as of today (sept.2014) the link to MosaicTest.html is dead. – Chris Sep 16 '14 at 10:46 ...
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How to read a text file reversely with iterator in C#

...ss line here Console.WriteLine(line); } EDIT: After reading applejacks01's comment, I run some tests and it does look like .Reverse() actually loads whole file. I used File.ReadLines() to print first line of a 40MB file - memory usage of console app was 5MB. Then, used File.ReadLines().Reverse(...
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Clone private git repo with dockerfile

...elected for this question is not a good answer anymore. It was correct in 2014 but for 2020 this is the correct answer. – Bikal Basnet Apr 8 at 19:05 add a comment ...
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How can I generate a diff for a single file between two branches in github

... answered Feb 25 '17 at 16:05 f01f01 1,26011 gold badge1414 silver badges1818 bronze badges ...
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How to declare a structure in a header that is to be used by multiple files in c?

... C99 struct declaration, as rightfully remarked by Jonathan Leffler. Edit 2018-06-01: Craig Barnes reminds us in his comment that you don't need to keep separate names for the struct "tag" name and its "typedef" name, like I did above for the sake of clarity. Indeed, the code above could well be wri...
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How do I modify fields inside the new PostgreSQL JSON datatype?

...column – Bionix1441 Nov 8 '18 at 14:01 Should be clear: UPDATE users SET profile = profile || '{"lastname":"Washington...
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What is the difference between bottom-up and top-down?

...have no idea what the optimal evaluation order is. Typically, you would perform a recursive call (or some iterative equivalent) from the root, and either hope you will get close to the optimal evaluation order, or obtain a proof that you will help you arrive at the optimal evaluation order. You woul...