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SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
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Since 3.24.0 SQLite also supports upsert, so now you can simply write the following
INSERT INTO visits (ip, hits)
VALUES ('127.0.0.1', 1)
ON CONFLICT(ip) DO UPDATE SET hits = hits + 1;
...
Iterating Through a Dictionary in Swift
..., 3, 5, 7, 11, 13],
"Fibonacci": [1, 1, 2, 3, 5, 8],
"Square": [1, 4, 9, 16, 25]
]
var largest = 0
for (kind, numbers) in interestingNumbers {
println("kind: \(kind)")
for number in numbers {
if number > largest {
largest = number
}
}
}
largest
Th...
廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个分区；
2、一个soft raid 设备；
3、一个LVM的逻辑卷；
4、一个EVMS（Enterprise Volume Management System，企业卷管理系统）的卷；
5、其他任何的块设备。
2、基于DRBD的解决方案
从互联网上也搜索到两个比较成功且适合上面...
Passing route control with optional parameter after root in express?
...per jank xD
– Qcom
Jul 22 '11 at 3:54
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jquery how to empty input field
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423
You can clear the input field by using $('#shares').val('');
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Understanding scala enumerations
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How do I find if a string starts with another string in Ruby?
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4 Answers
4
Active
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JavaScript exponents
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47
There is an exponentiation operator, which is part of the ES7 final specification. It is suppos...
How can I split and parse a string in Python?
I am trying to split this string in python: 2.7.0_bf4fda703454
3 Answers
3
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binning data in python with scipy/numpy
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184
It's probably faster and easier to use numpy.digitize():
import numpy
data = numpy.random.rando...