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Replace specific characters within strings
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410
With a regular expression and the function gsub():
group <- c("12357e", "12575e", "197e18",...
How to replace an item in an array with Javascript?
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var index = items.indexOf(3452);
if (index !== -1) {
items[index] = 1010;
}
Also it is recommend you not use the constructor method to initialize your arrays. Instead, use the literal syntax:
var items = [523, 3452, 334, 31, 5346];
You can also use the ~ operator ...
How to send POST request?
...s
>>> r = requests.post("http://bugs.python.org", data={'number': 12524, 'type': 'issue', 'action': 'show'})
>>> print(r.status_code, r.reason)
200 OK
>>> print(r.text[:300] + '...')
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/x...
How to put spacing between TBODY elements
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12 Answers
12
Active
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MongoDB SELECT COUNT GROUP BY
...ate:
db.contest.aggregate([
{"$group" : {_id:"$province", count:{$sum:1}}}
])
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移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...移动设备上的浏览器都会把自己默认的viewport设为980px或1024px（也可能是其它值，这个是由设备自己决定的），但带来的后果就是浏览器会出现横向滚动条，因为浏览器可视区域的宽度是比这个默认的viewport的宽度要小的。下图列...
RegEx backreferences in IntelliJ
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196
IntelliJ uses $1 for replacement backreferences.
From IntelliJ's help:
For more informati...
What is your favorite C programming trick? [closed]
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