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How can I check whether a option already exist in select by JQuery
...h can be good for beginners. Certainly not the best answer, but it is a valid one.
– roberthuttinger
Apr 9 '13 at 14:42
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What does mvn install in maven exactly do
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As you might be aware of, Maven is a build automation tool provided by Apache which does more than dependency management. We can make it as a peer of Ant and Makefile which downloads all of the dependencies required.
On a mvn install, it frames a dependency tree based on the project con...
Overwriting my local branch with remote branch [duplicate]
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I did this with one slight change and it didn't work: git fetch --all, git reset --hard SHA1OFANOLDCOMMIT, (some other stuff), git reset --hard origin/branch. The end result was that I was still at the old commit. So, this appro...
Delete all local changesets and revert to tree
... the large fixes above, very simple, thank you!
– David C
Jul 22 '11 at 15:23
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If anyone has pro...
Which characters are valid/invalid in a JSON key name?
Are there any forbidden characters in key names, for JavaScript objects or JSON strings? Or characters that need to be escaped?
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What does $.when.apply($, someArray) do?
...a parameter to the function. .apply can also change the context (this) inside a function.
So, let's take $.when. It's used to say "when all these promises are resolved... do something". It takes an infinite (variable) number of parameters.
In your case, you have an array of promises; you don't ...
Rails: select unique values from a column
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I did a: group(:rating).collect { |r| r.rating } Since map == collect, where can I read about this sintax you used (&:rating)? I don't see this in Ruby's documentation.
– alexandrecosta
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How to write a:hover in inline CSS?
...swer: you can't.
Long answer: you shouldn't.
Give it a class name or an id and use stylesheets to apply the style.
:hover is a pseudo-selector and, for CSS, only has meaning within the style sheet. There isn't any inline-style equivalent (as it isn't defining the selection criteria).
Response ...
Intellij Idea 9/10, what folders to check into (or not check into) source control?
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We have a FAQ article covering this question.
[The .idea] format is used by all the recent IDE versions by default.
Here is what you need to share:
All the files under .idea directory in the project root except the workspace.xml and tasks.xml files which store user s...
Hide all warnings in ipython
I need to produce a screencast of an ipython session, and to avoid confusing viewers, I want to disable all warnings emitted by warnings.warn calls from different packages. Is there a way to configure the ipythonrc file to automatically disable all such warnings?
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