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Hash Code and Checksum - what's the difference?
My understanding is that a hash code and checksum are similar things - a numeric value, computed for a block of data, that is relatively unique.
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Insert text into textarea with jQuery
I'm wondering how I can insert text into a text area using jquery, upon the click of an anchor tag.
17 Answers
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
In my Rails (3.2) app, I have a bunch of tables in my database but I forgot to add a few not null constraints. I've googled around but I can't find how to write a migration which adds not null to an existing column.
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RegEx: Grabbing values between quotation marks
I have a value like this:
20 Answers
20
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How to apply CSS to iframe?
I have a simple page that has some iframe sections (to display RSS links). How can I apply the same CSS format from the main page to the page displayed in the iframe?
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When do I use the PHP constant “PHP_EOL”?
When is it a good idea to use PHP_EOL ?
19 Answers
19
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Most concise way to convert a Set to a List
For example, I am currently doing this:
6 Answers
6
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How to solve “Fatal error: Class 'MySQLi' not found”?
I am doing a tutorial and am getting this error:
22 Answers
22
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How do you beta test an iphone app?
How can you beta test an iPhone app? I can get it on my own device, and anyone that gives me a device, I can run it on theirs, but is there a way to do a limited release via the app store for beta testing?
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Capybara Ambiguity Resolution
How do I resolve ambiguity in Capybara? For some reason I need links with the same values in a page but I can't create a test since I get the error
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