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Practical uses of git reset --soft?
I have been working with git for just over a month. Indeed I have used reset for the first time only yesterday, but the soft reset still doesn't make much sense to me.
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Can I see changes before I save my file in Vim?
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Can you please add some content instead of just a link? SO guidelines...
– Błażej Michalik
Sep 7 '16 at 8:08
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Installed Java 7 on Mac OS X but Terminal is still using version 6
...k so that it points to /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java instead:
sudo rm /usr/bin/java
sudo ln -s /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java /usr/bin
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Omit rows containing specific column of NA
I want to know how to omit NA values in a data frame, but only in some columns I am interested in.
8 Answers
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ReactJS Two components communicating
...r.toLowerCase());
return (match !== -1);
}.bind(this));
var content;
if (displayedItems.length > 0) {
var items = displayedItems.map(function(item) {
return <li>{item}</li>;
});
content = <ul>{items}</ul>
} else {
cont...
Sleeping in a batch file
When writing a batch file to automate something on a Windows box, I've needed to pause its m>ex m>ecution for several seconds (usually in a test/wait loop, waiting for a process to start). At the time, the best solution I could find uses ping (I kid you not) to achieve the desired effect. I've found a be...
Evaluate m>ex m>pression given as a string
I'm curious to know if R can use its eval() function to perform calculations provided by e.g. a string.
7 Answers
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Use numpy array in shared memory for multiprocessing
I would like to use a numpy array in shared memory for use with the multiprocessing module. The difficulty is using it like a numpy array, and not just as a ctypes array.
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Why should a Java class implement comparable?
Why is Java Comparable used? Why would someone implement Comparable in a class? What is a real life m>ex m>ample where you need to implement comparable?
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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
A while ago I came across some code that marked a member variable of a class with the mutable keyword. As far as I can see it simply allows you to modify a variable in a const method:
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