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How to read data when some numbers contain commas as thousand separator?
I have a csv file where some of the numerical values are expressed as strings with commas as thousand separator, e.g. "1,513" instead of 1513 . What is the simplest way to read the data into R?
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How to insert a new line in Linux shell script? [duplicate]
I want to insert a new line between multiple echo statements. I have tried echo "hello\n" , but it is not working. It is printing \n . I want the desired output like this:
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How to debug stream().map(…) with lambda expressions?
In our project we are migrating to java 8 and we are testing the new features of it.
6 Answers
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JavaScript math, round to two decimal places [duplicate]
I have the following JavaScript syntax:
13 Answers
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总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast简单总结：1)const_cast：移除const属性。2)static_cast：强转，与C类型转换类似，不检查类型来保证转换安全。也可用于指针的父类到子类的...简单总结：
1) const_cast：移除const属性。
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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?
I just found a comment in this answer saying that using iostream::eof in a loop condition is "almost certainly wrong". I generally use something like while(cin>>n) - which I guess implicitly checks for EOF.
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libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...门的朋友指引。
一.下载安装
1.到http://curl.haxx.se/download.html上下载最新版本，由于公司的机器安装rpm有依赖关系，所以直接下载了source
2.编译。解压后进入curl的目录，直接执行 make all 就行。
3.等待编译结束后，可以...
Deleting elements from std::set while iterating
I need to go through a set and remove elements that meet a predefined criteria.
8 Answers
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How to iterate over associative arrays in Bash
Based on an associative array in a Bash script, I need to iterate over it to get the key and value.
4 Answers
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fastest MD5 Implementation in JavaScript
There are many MD5 JavaScript implementations out there.
Does anybody know which one is the most advanced, most bugfixed and fastest?
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