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Java: Detect duplicates in ArrayList?
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Simplest: dump the whole collection into a Set (using the Set(Collection) constructor or Set.addAll), then see if the Set has the same size as the ArrayList.
List<Integer> list = ...;
Set<Integer> set = new HashSet<Integer>(list);
if(set.size() <...
Rollback a Git merge
...ou do a fast-forward merge, the second one you describe, you can use git reset to get back to the previous state:
git reset --hard <commit_before_merge>
You can find the <commit_before_merge> with git reflog, git log, or, if you're feeling the moxy (and haven't done anything else): gi...
Python __str__ and lists
In Java, if I call List.toString(), it will automatically call the toString() method on each object inside the List. For example, if my list contains objects o1, o2, and o3, list.toString() would look something like this:
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Window.open and pass parameters by post method
...;
document.getElementById('TheForm').submit();
</script>
Edit:
To set the values in the form dynamically, you can do like this:
function openWindowWithPost(something, additional, misc) {
var f = document.getElementById('TheForm');
f.something.value = something;
f.more.value = additio...
GitHub clone from pull request?
... a new branch that is on the state of the pull request.
You might want to set up an alias by running
git config --global alias.pro '!f() { git fetch -fu ${2:-origin} refs/pull/$1/head:pr/$1 && git checkout pr/$1; }; f'
Now you can checkout any PR by running git pr <pr_number>, or g...
How do you calculate the average of a set of circular data? [closed]
I want to calculate the average of a set of circular data. For example, I might have several samples from the reading of a compass. The problem of course is how to deal with the wraparound. The same algorithm might be useful for a clockface.
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Test if lists share any items in python
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Short answer: use not set(a).isdisjoint(b), it's generally the fastest.
There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such:
bool(set(a) &...
What is Data Transfer Object?
...ue however that this is ok if it's semantically correct (say if you pass a settings class with properties rather than the properties themselves as values). What you shouldn't do is throw in all the arguments for the sake of passing a single object, since they may very well be unrelated and cause nig...
In Python how should I test if a variable is None, True or False
I have a function that can return one of three things:
6 Answers
6
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Git: Create a branch from unstaged/uncommitted changes on master
...h your local changes. It just creates the branch from the current HEAD and sets the HEAD there.
So I guess that's what you want.
--- Edit to explain the result of checkout master ---
Are you confused because checkout master does not discard your changes?
Since the changes are only local, git does...