大约有 2,373 项符合查询结果（耗时：0.0098秒） [XML]
Ruby arrays: %w vs %W
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%w quotes like single quotes '' (no variable interpolation, fewer escape sequences), while %W quotes like double quotes "".
irb(main):001:0> foo="hello"
=> "hello"
irb(main):002:0> %W(foo bar baz #{foo})
=> ["foo", ...
Looping over arrays, printing both index and value
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The use of [@] and double quotes means it's not a "space separated list of words". You get the list of actual array keys, even if the individual keys contain whitespace.
– glenn jackman
Aug 21 '16 at 1:21
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I want to delete all bin and obj folders to force all projects to rebuild everything
... should work:
FOR /F "tokens=*" %%G IN ('DIR /B /AD /S bin') DO RMDIR /S /Q "%%G"
FOR /F "tokens=*" %%G IN ('DIR /B /AD /S obj') DO RMDIR /S /Q "%%G"
If you are using a bash or zsh type shell (such as git bash or babun on Windows or most Linux / OS X shells) then this is a much nicer, more succin...
AngularJS: Basic example to use authentication in Single Page Application
... up this article basically: https://medium.com/opinionated-angularjs/techniques-for-authentication-in-angularjs-applications-7bbf0346acec
ng-login Github repo
Plunker
I'll try to explain as good as possible, hope I help some of you out there:
(1) app.js: Creation of authentication constants on a...
sed one-liner to convert all uppercase to lowercase?
... > output.txt for GNU sed works fine too
– Asfand Qazi
Apr 13 '17 at 8:49
1
@ekkis OSX is usin...
What is the equivalent of MATLAB's repmat in NumPy
I would like to execute the equivalent of the following MATLAB code using NumPy: repmat([1; 1], [1 1 1]) . How would I accomplish this?
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Getting a structural type with an anonymous class's methods from a macro
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This question is answered in duplicate by Travis here. There are links to the issue in the tracker and to Eugene's discussion (in the comments and mailing list).
In the famous "Skylla and Charybdis" section of the type checker, o...
Check if a Bash array contains a value
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@AwQiruiGuo I'm not sure I'm following. Are you talking about arrays with dollar literals? If so, just make sure to escape the dollars in the value you're matching against with backslashes.
– Keegan
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How to calculate a logistic sigmoid function in Python?
...s log1p.
In general, the multinomial logistic sigmoid is:
def nat_to_exp(q):
max_q = max(0.0, np.max(q))
rebased_q = q - max_q
return np.exp(rebased_q - np.logaddexp(-max_q, np.logaddexp.reduce(rebased_q)))
(However, logaddexp.reduce could be more accurate.)
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Creating JS object with Object.create(null)?
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They are not equivalent. {}.constructor.prototype == Object.prototype while Object.create(null) doesn't inherit from anything and thus has no properties at all.
In other words: A javascript object inherits from Object by default, unless y...