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Remove all classes that begin with a certain string
I have a div with id="a" that may have any number of classes attached to it, from several groups. Each group has a specific prefix. In the javascript, I don't know which class from the group is on the div. I want to be able to clear all classes with a given prefix and then add a new one. If I want...
Why is the String class declared final in Java?
From when I learned that the class java.lang.String is declared as final in Java, I was wondering why that is. I didn't find any answer back then, but this post: How to create a replica of String class in Java? reminded me of my query.
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Why can't I use switch statement on a String?
Is this functionality going to be put into a later Java version?
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Removing multiple keys from a dictionary safely
I know how to remove an entry, 'key' from my dictionary d , safely. You do:
14 Answers
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What is the difference between is_a and instanceof?
I am aware that instanceof is an operator and that is_a is a method.
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Difference between Static and final?
I'm always confused between static and final keywords in java .
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Given an array of numbers, return array of products of all other numbers (no division)
I was asked this question in a job interview, and I'd like to know how others would solve it. I'm most comfortable with Java, but solutions in other languages are welcome.
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Sample random rows in dataframe
I am struggling to find the appropriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?
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How do you force a CIFS connection to unmount
I have a CIFS share mounted on a Linux machine. The CIFS server is down, or the internet connection is down, and anything that touches the CIFS mount now takes several minutes to timeout, and is unkillable while you wait. I can't even run ls in my home directory because there is a symlink pointin...
“X does not name a type” error in C++
I have two classes declared as below:
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