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Recommended way to get hostname in Java
Which of the following is the best and most portable way to get the hostname of the current computer in Java?
11 Answers
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What is 'Context' on Android?
...ndroid programming, what exactly is a Context class and what is it used for?
30 Answers
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$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
...request method (surprise).
$_POST contains any post data.
It's possible for a POST request to contain no POST data.
I check the request method — I actually never thought about testing the $_POST array. I check the required post fields, though. So an empty post request would give the user a lot ...
Prevent errors from breaking / crashing gulp watch
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Your swallowError function should look like this:
function swallowError (error) {
// If you want details of the error in the console
console.log(error.toString())
this.emit('end')
}
I think you have to bind this function on the e...
Java synchronized static methods: lock on object or class
...Since a static method has no associated object, will the synchronized keyword lock on the class, instead of the object?
Yes. :)
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How to remove unreferenced blobs from my git repo
...n something like these first, oh dear, git is complicated!!
git remote rm origin
rm -rf .git/refs/original/ .git/refs/remotes/ .git/*_HEAD .git/logs/
git for-each-ref --format="%(refname)" refs/original/ | xargs -n1 --no-run-if-empty git update-ref -d
You might also need to remove some tags, than...
When to use in vs ref vs out
Someone asked me the other day when they should use the parameter keyword out instead of ref . While I (I think) understand the difference between the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothet...
How to maintain a Unique List in Java?
...o from the JAVADoc:
A collection that contains no duplicate elements. More formally, sets contain no pair of elements e1 and e2 such that e1.equals(e2), and at most one null element. As implied by its name, this interface models the mathematical set abstraction.
Note: Great care must be exe...
How do I control how Emacs makes backup files?
...hat's confusing and awful. How can I either eliminate these backup files, or have them go somewhere other than the same directory?
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Algorithm to compare two images
Given two different image files (in whatever format I choose), I need to write a program to predict the chance if one being the illegal copy of another. The author of the copy may do stuff like rotating, making negative, or adding trivial details (as well as changing the dimension of the image).
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