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Find the day of a week
...ion wday:
library(lubridate)
df$date <- as.Date(df$date)
wday(df$date, label=TRUE)
[1] Wed Wed Thurs
Levels: Sun < Mon < Tues < Wed < Thurs < Fri < Sat
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VC教父阎焱：现在管钱的80%都是傻子 - 资讯 - 清泛网 - 专注C/C++及内核技术
VC教父阎焱：现在管钱的80%都是傻子阎焱同时强调这也是一个最好的时代，第一是政策好，在中国历史上，从没有上到总理，下到创业园，全社会一起呼吁大家创业的；第二是钱多，阎焱称投资20多年，没有见过这么多钱，“而...
界面布局组件 · App Inventor 2 中文网
...包含 高度属性设置为填充父级 的组件，布局的实际高度是使用组件的自动高度计算的。
如果水平布局的 高度 属性设置为自动且其中没有任何组件，则 高度 将是 100%。
如果水平布局的 宽度 属性设置为自动，则...
Transactions in .net
...// Commit the transaction.
sqlTran.Commit();
Label3.Text = "Both records were written to database.";
}
catch (Exception ex)
{
// Handle the exception if the transaction fails to commit.
Label4.Text = ex.Mess...
How do I create an HTML table with a fixed/frozen left column and a scrollable body?
...
This doesn't handle arbitrary labels. Unless you have very predictably short labels, you will get this: jsfiddle.net/YMvk9/3724
– AaronLS
Mar 10 '14 at 22:05
...
How exactly does tail recursion work?
... acc * n);
}
into something like this:
int fac_times (int n, int acc) {
label:
if (n == 0) return acc;
acc *= n--;
goto label;
}
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千亿时代 网游走到十字路口 - 资讯 - 清泛网 - 专注C/C++及内核技术
...到十字路口十余年发展有高峰也有低谷，中国游戏产业还是在去年迈入千亿元时代，而今年的ChinaJoy无疑是多重变局下的集中阅兵：增速放缓到不能再缓的端...十余年发展有高峰也有低谷，中国游戏产业还是在去年迈入千亿元时...
Create a matrix of scatterplots (pairs() equivalent) in ggplot2
...facet_wrap(.xkey ~ .ykey, ncol = length(unique(.$.ykey)), scales = 'free', labeller = label_both) +
scale_color_brewer(type = 'qual')
}
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How to find if div with specific id exists in jQuery?
...f($("#" + name).length == 0) {
$("div#chatbar").append("<div class='labels'><div id='" + name + "' style='display:none;'></div>" + name + "</div>");
} else {
alert('this record already exists');
}
});
Or, the non-jQuery version for this part (since it's an ID):
...
Declaring a custom android UI element using XML
...>
Reference the custom view using the fully qualified name.
Android LabelView Sample
If you want a complete example, look at the android label view sample.
LabelView.java
TypedArray a=context.obtainStyledAttributes(attrs, R.styleable.LabelView);
CharSequences=a.getString(R.styleable.Labe...