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Replace all 0 values to NA
...
An alternative way without the [<- function:
A sample data frame dat (shamelessly copied from @Chase's answer):
dat
x y
1 0 2
2 1 2
3 1 1
4 2 1
5 0 0
Zeroes can be replaced with NA by the is.na<- function:
is.na(dat) <- !dat
dat
x y
1 NA 2
2 1 2
3 1...
What is context in _.each(list, iterator, [context])?
...
The context lets you provide arguments at call-time, allowing easy customization of generic pre-built helper functions.
some examples:
// stock footage:
function addTo(x){ "use strict"; return x + this; }
function pluck(x){ "use strict"; return x[this]; }
function l...
Good example of livelock?
...ontinue;
}
// Spouse wasn't hungry, so finally eat
spoon.use();
isHungry = false;
System.out.printf(
"%s: I am stuffed, my darling %s!%n",
name, spouse.getName());...
How to print to stderr in Python?
...to make your code Python3-ready. I guess this could be why many people actually like it!
– MarcH
Nov 18 '14 at 19:00
18
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How to vertically align into the center of the content of a div with defined width/height?
...so be done using display: flex with only a few lines of code. Here is an example:
.container {
width: 100px;
height: 100px;
display: flex;
align-items: center;
}
Live Demo
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How can I post an array of string to ASP.NET MVC Controller without a form?
..., other wise
{ Values : ["1", "2", "3"] }
will come out as
Values[]=1&Values[]=2&Values[]=3
instead of
Values=1&Values=2&Values=3
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rsync copy over only certain types of files using include option
...iles of certain extension(in this case *.sh), however it still copies over all the files. what's wrong?
6 Answers
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Vim users, where do you rest your right hand? [closed]
...ndation: "down-up-left-right"
Keep up/down where they are, then make 3rd & 4th fingers left & right
Then, to avoid overwriting base Vim features: Toss whatever used to be on ; to the now-empty h button
As a cute bonus, the "l" key now stands for "left" ;)
noremap l h
noremap ; l...
Test or check if sheet exists
...ists(sName As String) As Boolean
WorksheetExists = Evaluate("ISREF('" & sName & "'!A1)")
End Function
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How to test code dependent on environment variables using JUnit?
... value);
}
}
For Java 5 to 7 the library System Rules has a JUnit rule called EnvironmentVariables.
import org.junit.contrib.java.lang.system.EnvironmentVariables;
public class EnvironmentVariablesTest {
@Rule
public final EnvironmentVariables environmentVariables
= new EnvironmentVariab...