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Selecting only numeric columns from a data frame
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296
EDIT: updated to avoid use of ill-advised sapply.
Since a data frame is a list we can use th...
Best Practice: Software Versioning [closed]
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Tell Ruby Program to Wait some amount of time
...following convenience syntax:
sleep(4.minutes)
# or, even longer...
sleep(2.hours); sleep(3.days) # etc., etc.
# or shorter
sleep(0.5) # half a second
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How to display a content in two-column layout in LaTeX?
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RadioButton单选按钮扩展集合 · App Inventor 2 中文网
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Can I install/update WordPress plugins without providing FTP access?
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How to persist a property of type List in JPA?
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How do you keep parents of floated elements from collapsing? [duplicate]
...float: left;">Div 1</div>
<div style="float: left;">Div 2</div>
</div>
CSS:
.clearfix::after {
content: " ";
display: block;
height: 0;
clear: both;
}
With a little CSS targeting, you don't even need to add a class to the parent DIV.
This so...
Truncate a list to a given number of elements
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142
Use List.subList:
import java.util.*;
import static java.lang.Math.min;
public class T {
pub...
stash@{1} is ambiguous?
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234
Your shell is eating your curly brackets, so while you say stash@{1}, git sees stash@1 and tha...