大约有 1,200 项符合查询结果（耗时：0.0166秒） [XML]
How to add 30 minutes to a JavaScript Date object?
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var in30Mins = new Date(+new Date() + 1.8e6) is a one–liner, but not sure it's any better than a two–liner. ;-)
– RobG
Jun 18 '17 at 12:44
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Measuring the distance between two coordinates in PHP
...8684);
} else {
return $miles;
}
}
results :
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "M") . " Miles<br>";
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "K") . " Kilometers<br>";
echo distance(32.9697, -96.80322, 29.46786, -98.53506, "N") . " Nautical ...
Remove duplicates from an array of objects in JavaScript
...t you want to not be duplicated. Now can this be done through reducer for e6 standards?
– Christian Matthew
Sep 16 '19 at 19:09
add a comment
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How do I create a SHA1 hash in ruby?
...require 'rickshaw'
> Rickshaw::SHA1.hash('LICENSE.txt')
=> "4659d94e7082a65ca39e7b6725094f08a413250a"
> "hello world".to_sha1
=> "2aae6c35c94fcfb415dbe95f408b9ce91ee846ed"
share
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Test for equality among all elements of a single vector
...'s solution is ~10x for x, ~3x faster for y and slightly slower for runif(1e6).
– Joshua Ulrich
Jan 21 '11 at 18:34
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二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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How to assign a Git SHA1's to a file without Git?
...cter string.
For example, the hash of an empty file:
sha1("blob 0\0") = "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
$ touch empty
$ git hash-object empty
e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
Another example:
sha1("blob 7\0foobar\n") = "323fae03f4606ea9991df8befbb2fca795e648fa"
$ echo "foob...
Can promises have multiple arguments to onFulfilled?
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You can use E6 destructuring:
Object destructuring:
promise = new Promise(function(onFulfilled, onRejected){
onFulfilled({arg1: value1, arg2: value2});
})
promise.then(({arg1, arg2}) => {
// ....
});
Array destructuring:
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How to fallback to local stylesheet (not script) if CDN fails
...u cannot enumerate .rules/.cssRules for external stylesheets. jsfiddle.net/E6yYN/13
– Salman A
Oct 13 '16 at 7:09
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Remove rows with all or some NAs (missing values) in data.frame
...st these assumptions for your own use case ------------
row_size <- 1e6L
col_size <- 20 # not including ID column
p_missing <- 0.05 # likelihood of missing observation (except ID col)
col_subset <- 18:21 # second part of question: filter on select columns
#------- System i...