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Remove an entire column from a data.frame in R
...u could do
Data <- subset( Data, select = -c(d, b ) )
You can remove all columns between d and b with:
Data <- subset( Data, select = -c( d : b )
As I said above, this syntax works only when the column names are known. It won't work when say the column names are determined programmatical...
Input and Output binary streams using JERSEY?
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This consumes all bytes into memory, which means large files could bring down the server. The purpose of streaming is to avoid consuming all bytes into memory.
– Robert Christian
Jan 15 '16 at 0:34
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How to deep watch an array in angularjs?
...ce consequences to deep-diving an object in your $watch. Sometimes (for example, when changes are only pushes and pops), you might want to $watch an easily calculated value, such as array.length.
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Get name of currently executing test in JUnit 4
...ic.
JUnit 4.7.x - 4.8.x
The following approach will print method names for all tests in a class:
@Rule
public MethodRule watchman = new TestWatchman() {
public void starting(FrameworkMethod method) {
System.out.println("Starting test: " + method.getName());
}
};
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Undo git stash pop that results in merge conflict
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Excellent thanks! #6 is really the answer I was looking for. Could add a git stash drop as the last step to get rid of the unwanted stash from #2.
– austinmarton
Oct 17 '14 at 0:39
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Sticky sidebar: stick to bottom when scrolling down, top when scrolling up
...stick to the top, in a fluid motion (no jumping). I am unable to find an example of what I am trying to achieve, so I have created an image that I hope will illustrate the point clearer:
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Keyboard shortcuts are not active in Visual Studio with Resharper installed
... Reset all settings), then go to the Resharper > Options > Keyboard & Menus and re-apply the keyboard shortcut scheme.
I had to do something similar once.
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CSS checkbox input styling
Any style for input affects every input element. Is there a way to specify styling to apply for only checkboxes without applying a class to each check box element?
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How to split the name string in mysql?
...e me feel super human with mysql pro skills. I have ave completely removed PHP processing and turned 100 lines of logic in a one single query. This is amazing!
– TeaCupApp
Feb 4 '14 at 3:35
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Bash/sh - difference between && and ;
...e ; to combine more than one command in a line, but some people prefer && . Is there any difference? For example, cd ~; cd - and cd ~ && cd - seems to make the same thing. What version is more portable, e.g. will be supported by a bash-subset like Android's shell or so?
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