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Can virtual functions have default parameters?
If I declare a base class (or interface class) and specify a default value for one or more of its parameters, do the derived classes have to specify the same defaults and if not, which defaults will manifest in the derived classes?
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几个有趣的Javascript Hack - 创意 - 清泛网 - 专注C/C++及内核技术
...当前网页已经变成编辑模式了。将上述代码中的true改成false重新执行一遍即可恢复。
2. 舞动的图片
javascript：R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI=document.images; DIL=DI.length; function A(){for(i=0; i-DIL;...
How to set up tmux so that it starts up with specified windows opened?
How to set up tmux so that it starts up with specified windows opened?
20 Answers
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How to do parallel programming in Python?
... It actually is optimized for both the single-machine case and the cluster setting. A lot of the design decisions (e.g., shared memory, zero-copy serialization) are targeted at supporting single machines well.
– Robert Nishihara
Jul 22 '18 at 22:55
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Function overloading by return type?
Why don't more mainstream statically typed languages support function/method overloading by return type? I can't think of any that do. It seems no less useful or reasonable than supporting overload by parameter type. How come it's so much less popular?
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Can you change what a symlink points to after it is created?
...r link inside the existing one because the 'no derefencing' option was not set.
– Jonathan Gruber
Dec 4 '14 at 10:18
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PostgreSQL: Difference between text and varchar (character varying)
What's the difference between the text data type and the character varying ( varchar ) data types?
9 Answers
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...者姓氏的第一个字母。因为它的作者是三个人，分别是Alfred Aho、Brian Kernighan、Peter Weinberger。gawk是awk的GNU版本，它提供了Bell实验室和GNU的一些扩展。下面介绍的awk是以GUN的gawk为例的，在linux系统中已把awk链接到gawk，所以下面全...
Reading specific lines only
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fun fact: if you use a set instead of the list in the second example, you get O(1) running time. Look up in a list is O(n). Internally sets are represented as hashes, and thats why you get the O(1) running time. not a big deal in this example, but ...
print call stack in C or C++
... dump the call stack in a running process in C or C++ every time a certain function is called? What I have in mind is something like this:
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