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C语言面试那些事儿──一道指针与数组问题 - c++1y / stl - 清泛IT社区,为创新赋能!

首先看如下代码: int main(int argc, char** argv) {     int a[5] = {1,2,3,4,5};     int* ptr = (int*)(&a + 1);     printf("%d,%d\n", *(a+1), *(ptr-1));     return 0; }复制代码这道题在很多所谓经典C语言面试题里是常见...
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What's the difference between a proc and a lambda in Ruby?

And when would you use one rather than the other? 8 Answers 8 ...
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Calling C++ class methods via a function pointer

How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write: ...
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How do I use itertools.groupby()?

I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this: ...
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Difference between clustered and nonclustered index [duplicate]

I need to add proper index to my tables and need some help. 6 Answers 6 ...
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Can a foreign key be NULL and/or duplicate?

Please clarify two things for me: 11 Answers 11 ...
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Remove all spaces from a string in SQL Server

What is the best way to remove all spaces from a string in SQL Server 2008? 23 Answers ...
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Android: When should I use a Handler() and when should I use a Thread?

When I need something to run asynchronously , such as a long running task or a logic that uses the network, or for whatever reason, Starting a new Thread and running it works fine. Creating a Handler and running it works as well. What's the difference? When should I use each one? What are the...
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Fundamental difference between Hashing and Encryption algorithms

I see a lot of confusion between hashes and encryption algorithms and I would like to hear some more expert advice about: 1...
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Scala: Abstract types vs generics

I was reading A Tour of Scala: Abstract Types . When is it better to use abstract types? 4 Answers ...