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What is a database transaction?
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248
A transaction is a unit of work that you want to treat as "a whole." It has to either happen i...
Android - Dynamically Add Views into View
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234
Use the LayoutInflater to create a view based on your layout template, and then inject it into...
How to replace a character with a newline in Emacs?
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itsjeyd
4,53322 gold badges2525 silver badges4545 bronze badges
answered Mar 4 '09 at 23:52
Jonathan ArkellJonatha...
Getting attributes of a class
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128
Try the inspect module. getmembers and the various tests should be helpful.
EDIT:
For example...
Looping over a list in Python
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200
Try this,
x in mylist is better and more readable than x in mylist[:] and your len(x) should ...
快速理解 高频对冲套利自动交易（程式化交易） - 更多技术 - 清泛网 - 专注...
...样一件事，不断的开仓、平仓、再开仓、再平仓。。。
2、何谓：对冲？在做空制度下，同时，持有空单和多单，以此将市场暴涨暴跌对账户的冲击降低到可接受范围；
3、何谓：套利？在狭义上，分跨期套利、跨品种套利，目...
Compare floats in php
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237
If you do it like this they should be the same. But note that a characteristic of floating-poi...
Leading zeros for Int in Swift
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Assuming you want a field length of 2 with leading zeros you'd do this:
import Foundation
for myInt in 1 ... 3 {
print(String(format: "%02d", myInt))
}
output:
01
02
03
This requires import Foundation so technically it is not a part of the Swift la...
Can I replace groups in Java regex?
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126
Use $n (where n is a digit) to refer to captured subsequences in replaceFirst(...). I'm assumin...
How to rethrow InnerException without losing stack trace in C#?
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answered Jun 13 '13 at 15:42
Paul TurnerPaul Turner
34.1k1313 gold badges8787 silver badges153153 bronze badges
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