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Picking a random element from a set
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88
int size = myHashSet.size();
int item = new Random().nextInt(size); // In real life, the Random...
Prepend a level to a pandas MultiIndex
... okartalokartal
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WebAPI Multiple Put/Post parameters
... "NextActivityPerformers":{
"39c71004-d822-4c15-9ff2-94ca1068d745":[{
"UserID":10,
"UserName":"Smith"
}]
}}
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Asynchronous vs synchronous execution, what does it really mean? [closed]
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Ryan
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answered Nov 7 '14 at 15:43
themightysapienthemightysapien
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Remove all special characters from a string in R?
...tion, but it's much easier to remove all punctuation characters.
x <- "a1~!@#$%^&*(){}_+:\"<>?,./;'[]-=" #or whatever
str_replace_all(x, "[[:punct:]]", " ")
(The base R equivalent is gsub("[[:punct:]]", " ", x).)
An alternative is to swap out all non-alphanumeric characters.
str_re...
Proxy with express.js
...similar routing (or the exact same) I end up with the following: stream.js:94 throw er; // Unhandled stream error in pipe. ^ Error: getaddrinfo ENOTFOUND google.com at errnoException (dns.js:44:10) at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:94:26) any ideas?
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python generator “send” function purpose?
...n up to the next yield
>>> gen.send(94.3) # goes into 'x' again
188.5999999999999
You can't do this just with yield.
As to why it's useful, one of the best use cases I've seen is Twisted's @defer.inlineCallbacks. Essentially it allows you to write a function like this:
@defer.inlineCal...
How do I find the maximum of 2 numbers?
...ivisions it rounds off to integer, it would be better to use:
c=float(max(a1,...,an))/b
Sorry for the late post!
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iOS Ad Hoc 和 App Store 区别 - App应用开发 - 清泛IT社区，为创新赋能！
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常见格式（两种）
40位十六进制（老设备常见）
00008020A1B2C3D4E5F60718293A4B5C6D7E8F90
25位左右（新设备 / iOS 16+ 常见）
00008110-001234567890801EIPA 文件不能直接“上传就发布”到 App Store，但它是发布流程中的核心产物。
你现在的理...
How to suppress scientific notation when printing float values?
...mberCaptain Cucumber
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