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C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
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a ^ b
<<
位左移运算
2
a<<4
>>
位右移运算
2
a>>2
1、位逻辑非运算
位逻辑非运算是单目的，只有一个运算对象。位逻辑非运算按位对运算对象的值进行非运算...
How do I create a parameterized SQL query? Why Should I?
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edited Jul 6 '17 at 12:54
Visual Vincent
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answe...
When to use Task.Delay, when to use Thread.Sleep?
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Bakudan
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answered Nov 19 '13 at 23:44
Stephen ClearyStephen Cleary
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What is the purpose of base 64 encoding and why it used in HTTP Basic Authentication?
I don't get the Base64 encryption.
7 Answers
7
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Email Address Validation in Android on EditText [duplicate]
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edited Feb 21 at 13:14
milosmns
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answered Ap...
Declaring variables inside or outside of a loop
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Mike NakisMike Nakis
44.1k77 gold badges7272 silver badges112112 bronze badges
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Understanding dict.copy() - shallow or deep?
...gt;>> a, b
({1: [1, 2, 3]}, {1: [1, 2, 3]})
>>> a[1].append(4)
>>> a, b
({1: [1, 2, 3, 4]}, {1: [1, 2, 3, 4]})
In contrast, a deep copy will copy all contents by value.
>>> import copy
>>> c = copy.deepcopy(a)
>>> a, c
({1: [1, 2, 3, 4]}, {1: [1,...
techniques for obscuring sensitive strings in C++
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14 Answers
14
Active
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Deleting all files in a directory with Python
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yugr
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answered Jan 3 '10 at 16:02
mikumiku
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Homebrew install specific version of formula?
...ll a specific version of a formula in homebrew? For example, postgresql-8.4.4 instead of the latest 9.0.
27 Answers
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