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Run a callback only if an attribute has changed in Rails
I have the following association in my app:
3 Answers
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CSS: center element within a element
... left: 50%; . However, this centers the element with respect to the whole window.
20 Answers
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How to capture the “virtual keyboard show/hide” event in Android?
...s shown or not. I've searched the API and various blogs but can't seem to find anything useful.
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Determining whether jQuery has not found any element
I'm using jQuery's selectors, especially id selector:
4 Answers
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ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
I'm currently looking at other search methods rather than having a huge SQL query.
I saw elasticsearch recently and played with whoosh (a Python implementation of a search engine).
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Background task, progress dialog, orientation change - is there any 100% working solution?
I download some data from internet in background thread (I use AsyncTask ) and display a progress dialog while downloading. Orientation changes, Activity is restarted and then my AsyncTask is completed - I want to dismiss the progess dialog and start a new Activity. But calling dismissDialog someti...
Prevent browser from loading a drag-and-dropped file
I'm adding an html5 drag and drop uploader to my page.
10 Answers
10
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Why use symbols as hash keys in Ruby?
A lot of times people use symbols as keys in a Ruby hash.
4 Answers
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jQuery selector for the label of a checkbox
If I have a check box with a label describing it, how can I select the label using jQuery? Would it be easier to give the label tag an ID and select that using $(#labelId) ?
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How can I get the corresponding table header (th) from a table cell (td)?
Given the following table, how would I get the corresponding table header for each td element?
7 Answers
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