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Simultaneously merge multiple data.frames in a list
I have a list of many data.frames that I want to merge. The issue here is that each data.frame differs in terms of the number of rows and columns, but they all share the key variables (which I've called "var1" and "var2" in the code below). If the data.frames were identical in terms of columns, ...
Using {} in a case statement. Why?
...? Normally, no matter how many lines are there in a case statement, all of the lines are executed. Is this just a rule regarding older/newer compilers or there is something behind that?
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App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...url的页面，这款拓展统统解决。
.aix 拓展下载：
cn.fun123.CustomWebView.aix
基础使用方法：
例如，使用此拓展访问 react 写的网页，效果如下：
而使用原生的Web浏览器则无法访问：
属性
AdHosts
Sets the ...
What's the difference between Perl's backticks, system, and exec?
Can someone please help me? In Perl, what is the difference between:
5 Answers
5
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Error: Jump to case label
I wrote a program which involves use of switch statements... However on compilation it shows:
4 Answers
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How to use > in an xargs command?
I want to find a bash command that will let me grep every file in a directory and write the output of that grep to a separate file. My guess would have been to do something like this
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How do I add files without dots in them (all extension-less files) to the gitignore file?
Like the title says, is it possible to add "files without dots in them" to the gitignore file?
3 Answers
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What is the difference between \r and \n?
How are \r and \n different? I think it has something to do with Unix vs. Windows vs. Mac, but I'm not sure exactly how they're different, and which to search for/match in regexes.
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Why is my git repository so big?
...epository into the local one (git remote add ... and git remote update). After deleting the unwanted remote ref, branches and tags I still had 1.4GB (!) of wasted space in my repository. I was only able to get rid of this by cloning it with git clone file:///path/to/repository. Note that the file...
What is the difference between statically typed and dynamically typed languages?
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Statically typed languages
A language is statically typed if the type of a variable is known at compile time. For some languages this means that you as the programmer must specify what type each variable is (e.g.: Java, C, C++); other languages offer some form of type inference, the ...