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What is the difference between Python's list methods append and extend?
2008年10月31 - What's the difference between the list methods append() and extend()? 列表方法append()和extend()之间有什么区别?
What is the best comment in source code you have ever encountered?
2011年09月18 - What is the best comment in source code you have ever encountered? 您遇到过的源代码中最好的注释是什么?
How to check whether a file exists?
2008年09月17 - How to see if a file exists or not, without using the try statement? 如何查看是否存在文件,而不使用try语句?
Loop through an array in JavaScript
2010年06月10 - In Java you can use a for loop to traverse objects in an array as follows: 在Java中,可以使用for循环遍历数组中的对象:
How do I push a new local branch to a remote Git repository and track it too?
2010年05月04 - I want to be able to do the following: 我想做到以下几点: Create a local branch based on some other (remo
How do I vertically center text with CSS?
2012年01月14 - I have a div element which contains text, and I want to align the contents of this div vertically ce
Using global variables in a function
2009年01月08 - How can I create or use a global variable in a function? 如何在函数中创建或使用全局变量? If I create a global vari
In Python, how do I read a file line-by-line into a list?
2010年07月18 - How do I read every line of a file in Python and store each line as an element in a list? 如何读取Pytho
How to concatenate string variables in Bash
2010年11月15 - In PHP, strings are concatenated together as follows: 在PHP中,字符串被串联在一起,如下所示: $foo = "Hello"; $foo .=
Regular expression to match a line that doesn't contain a word?
2017年10月05 - I know it's possible to match a word and then reverse the matches using other tools (e.g. grep -v).

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