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Access lapply index names inside FUN
Is there a way to get the list index name in my lapply() function?
12 Answers
12
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
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The order of evaluation of subexpressions, including
the arguments of a function call and
operands of operators (e.g., +, -, =, * , /), with the exception of:
the binary logical operators (&& and ||),
the ternary conditional operator (?:), and
the comma operator (,)
is Unspecified
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项目管理实践教程二、源代码控制【Source Control Using VisualSVN Server ...
...2-1
点击Import，弹出下面的窗体，其中http://zt.net.henu.edu.cn 是服务器名，svn是代码仓库的根目录，StartKit是我们在上个教程中添加的一个代码库：
说明：左下角的CheckBox，在第一次签入源代码时没有用，但是，在以后你提交代码...
Accept function as parameter in PHP
I've been wondering whether is possible or not to pass a function as parameter in PHP; I want something like when you're programming in JS:
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How to check if an object is a list or tuple (but not string)?
... tuple - but not a str . Because many times I stumbled upon bugs where a function passes a str object by mistake, and the target function does for x in lst assuming that lst is actually a list or tuple .
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How is an overloaded method chosen when a parameter is the literal null value?
...("Hello methodC");
}
}
public class MyTest {
public static void fun(B Obj){
System.out.println("B Class.");
}
public static void fun(A Obj){
System.out.println("A Class.");
}
public static void main(String[] args) {
fun(null);
}
}
output...
App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...说明可以参考我摘录的官方的一个说明：http://blog.sina.com.cn/s/blog_66fa66650102w7is.html以及我在实施地图调用过程中的一些记录说明：http://blog.sina.com.cn/s/blog_66fa66650102wwfl.html（3）调用高德地图：
高德地图的uri参考地址：http://lbs.amap....
std::function vs template
Thanks to C++11 we received the std::function family of functor wrappers. Unfortunately, I keep hearing only bad things about these new additions. The most popular is that they are horribly slow. I tested it and they truly suck in comparison with templates.
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Using String Format to show decimal up to 2 places or simple integer
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An inelegant way would be:
var my = DoFormat(123.0);
With DoFormat being something like:
public static string DoFormat( double myNumber )
{
var s = string.Format("{0:0.00}", myNumber);
if ( s.EndsWith("00") )
{
return ((int)myNumber).ToString();
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Understanding the map function
Apply function to every item of iterable and return a list of the results. If additional iterable arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel.
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