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How to delete a specific line in a file?
...
First, open the file and get all your lines from the file. Then reopen the file in write mode and write your lines back, except for the line you want to delete:
with open("yourfile.txt", "r") as f:
lines = f.readlines()
with open("yourfile.txt", "w"...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...释器居然不到200k，这是多么地变态啊（/bin/sh都要1M，MacOS平台），而且能和C语言非常好的互动。我很好奇得浏览了一下Lua解释器的源码，这可能是我看过最干净的C的源码了。我不想写一篇大而全的语言手册，一方面是因为已经...
How to export all collections in MongoDB?
I want to export all collections in MongoDB by the command:
26 Answers
26
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Where to define custom error types in Ruby and/or Rails?
... error types in a Ruby library (gem) or Ruby on Rails application? Specifically:
5 Answers
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Minimum and maximum value of z-index?
...t to 0 and is
not a negative number.
Note that many properties that allow
an integer or real number as a value
actually restrict the value to some
range, often to a non-negative value.
So basically there are no limitations for z-index value in the CSS standard, but I guess most browse...
What's the difference between size_t and int in C++?
...ndly Wikipedia:
The stdlib.h and stddef.h header files define a datatype called size_t which is used to represent the size of an object. Library functions that take sizes expect them to be of type size_t, and the sizeof operator evaluates to size_t.
The actual type of size_t is platform-dependent; ...
How to programmatically show next view in ViewPager?
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answered Nov 12 '11 at 9:26
Vaibhav MishraVaibhav Mishra
8,5421111 gold badges3939 silver badges5555 bronze badges
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Copy folder recursively in node.js
Is there an easier way to copy a folder and all its content without manually doing a sequence of fs.readir , fs.readfile , fs.writefile recursively ?
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What is the difference between native code, machine code and assembly code?
...ece of metal that does the actual work) understands and executes directly. All other code must be translated or transformed into machine code before your machine can execute it.
Native code: This term is sometimes used in places where machine code (see above) is meant. However, it is also sometimes...
ImageUtil 扩展：图像工具扩展，提供图像处理和变换功能 · App Inventor 2 中文网
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