大约有 40,000 项符合查询结果(耗时:0.0483秒) [XML]

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How to smooth a curve in the right way?

... I prefer a Savitzky-Golay filter. It uses least squares to regress a small window of your data onto a polynomial, then uses the polynomial to estimate the point in the center of the window. Finally the window is shifted forward by one data point and the process repeats. This continues until ever...
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What is the difference between Python's list methods append and extend?

... Actually there's a big difference - x + [4, 5] gives you a new list assigned to x - x.extend() mutates the original list. I elaborate in my answer here below. – Aaron Hall♦ Jul 17 '17 at 1...
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How to pass command line arguments to a shell alias? [duplicate]

...k as you think it does. Because you are using double quotes the $1 is actually being evaluated to an empty string and the alias is actually the same as alias serve="python -m SimpleHTTPServer" and so whatever you pass after that alias is ALSO passed on the command line. If you try this set -x; al...
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How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?

...ment have an experiment called Luxon as of Feb 2018 moment.github.io/luxon/index.html – alxndr Feb 21 '18 at 5:34 Than...
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Geometric Mean: is there a built-in?

...pplication I had in mind they are the same, but of course this is not generally true. Thus, if you want to include optional propagation of zeros, and treat the length(x) differently in the case of NA removal, the following is a slightly longer alternative to the function above. gm_mean = function(x...
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How can I change IIS Express port for a site

...mmandName": "IISExpress", "launchBrowser": true, "launchUrl": "index.html", "environmentVariables": { "Hosting:Environment": "Development" }, } } } Or you can use the GUI by double clicking in the "Properties" of your project. Note: I had to reopen VS to make i...
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How to reference generic classes and methods in xml documentation

...ore the number of method type parameters, then the parameters are the zero-indexed parameter with the appropriate number of backticks. So we can see that FancyClass has one class type parameter, FancyMethod has one type parameter, and an object of the FancyClass parameter type will be passed to the...
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How to convert NSNumber to NSString

...l StringValue method, something like NSString *myString= [[myArray objectAtIndex:i] stringValue]; but you have to be sure that you have an NSNumber at that index – JonLOo Oct 19 '10 at 15:47 ...
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Reference requirements.txt for the install_requires kwarg in setuptools setup.py file

...ages included in the repo under deps/: # fetch specific dependencies --no-index --find-links deps/ # install package # NOTE: -e . for editable mode . pip executes package's setup.py and installs the specific versions of dependencies declared in install_requires. There's no duplicity and the purp...
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Simple argparse example wanted: 1 argument, 3 results

...or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" . ...