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what's data-reactid attribute in html?
...d attribute is a custom attribute used so that React can uniquely identify its components within the DOM.
This is important because React applications can be rendered at the server as well as the client. Internally React builds up a representation of references to the DOM nodes that make up your ap...
Listing all permutations of a string/integer
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First of all: it smells like recursion of course!
Since you also wanted to know the principle, I did my best to explain it human language. I think recursion is very easy most of the times. You only have to grasp two steps:
The first step
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Java URL encoding of query string parameters
...that spaces in query parameters are represented by +, not %20, which is legitimately valid. The %20 is usually to be used to represent spaces in URI itself (the part before the URI-query string separator character ?), not in query string (the part after ?).
Also note that there are three encode() me...
Bash tool to get nth line from a file
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head and pipe with tail will be slow for a huge file. I would suggest sed like this:
sed 'NUMq;d' file
Where NUM is the number of the line you want to print; so, for example, sed '10q;d' file to print the 10th line of file.
Explanation:...
java.util.regex - importance of Pattern.compile()?
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The compile() method is always called at some point; it's the only way to create a Pattern object. So the question is really, why should you call it explicitly? One reason is that you need a reference to the Matcher object so you can use its methods, like group(int) to retrie...
A free tool to check C/C++ source code against a set of coding standards? [closed]
It looks quite easy to find such a tool for Java ( Checkstyle , JCSC ), but I can't seem to find one for C/C++. I am not looking for a lint-like static code analyzer, I only would like to check against coding standards like variable naming, capitalization, spacing, identation, bracket placement, an...
What is the best way to dump entire objects to a log in C#?
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You could base something on the ObjectDumper code that ships with the Linq samples.
Have also a look at the answer of this related question to get a sample.
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How to overcome root domain CNAME restrictions?
...ains to refer to those applications, usually they want that any user that either type http://www.customer1.example or http://customer1.example goes to their web application.
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git add, commit and push commands in one?
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Building off of @Gavin's answer:
Making lazygit a function instead of an alias allows you to pass it an argument. I have added the following to my .bashrc (or .bash_profile if Mac):
function lazygit() {
git add .
git commit -a -m "$1"
git push
}
This allo...
Do browsers parse javascript on every page load?
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These are the details that I've been able to dig up. It's worth noting first that although JavaScript is usually considered to be interpreted and run on a VM, this isn't really the case with the modern interpreters, which tend to compile the source directly into machine code (w...