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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
...由对方的drbd存储在本地对应磁盘 上，类似于一个网络RAID-1功能。在高可用(HA)中使用DRBD功能，可以代替使用一个共享盘阵。本地(主节点)与远程主机(备节点)的数据可以保 证实时同步。当本地系统出现故障时,远程主机上还会保...
Logical Operators, || or OR?
I remember reading a while back in regards to logical operators that in the case of OR , using || was better than or (or vice versa).
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Logical operators (“and”, “or”) in DOS batch
How would you implement logical operators in DOS Batch files?
12 Answers
12
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Python's equivalent of && (logical-and) in an if-statement
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what should i do for this: if x=='n' and y =='a' or y=='b': <do something> Will it work !? @ChristopheD
– diffracteD
Apr 2 '15 at 15:35
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Python syntax for “if a or b or c but not all of them”
I have a python script that can receive either zero or three command line arguments. (Either it runs on default behavior or needs all three values specified.)
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Difference between “or” and || in Ruby? [duplicate]
What's the difference between the or and || operators in Ruby? Or is it just preference?
8 Answers
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Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ndows
Layered Windows
Message-Only Windows
Window Relationships
Foreground and Background Windows
Owned Windows
Z-Order
Window Show State
Active Window
Disabled Windows
Window Visibility
Minimized, Maximized, and Restored Windows
Window Size and Position
Default Size a...
Or versus OrElse
What's the difference between or and OrElse ?
8 Answers
8
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Python: most idiomatic way to convert None to empty string?
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I'm keeping the else, but thanks for the str(s) tip so multiple types can be handled. nice!
– Mark Harrison
Jul 1 '09 at 9:39
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How to test multiple variables against a value?
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You misunderstand how boolean expressions work; they don't work like an English sentence and guess that you are talking about the same comparison for all names here. You are looking for:
if x == 1 or y == 1 or z == 1:
x and y are otherwise evaluated on their own (F...