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Difference between Iterator and Listiterator?
We can use Iterator to traverse a Set or a List or a Map . But ListIterator can only be used to traverse a List , it can't traverse a Set . Why?
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How do I automatically sort a has_many relationship in Rails?
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Postgres: “ERROR: cached plan must not change result type”
This exception is being thrown by the PostgreSQL 8.3.7 server to my application.
Does anyone know what this error means and what I can do about it?
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django 1.5 - How to use variables inside static tag
I'm currently migrating all the static files references in my project to the new {% static %} tag that django 1.5 introduced, but I'm having a problem, in some places I use variables to get the content. With the new tag I can't, is there any way to solve this?
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AJAX POST and Plus Sign ( + ) — How to Encode?
I'm POSTing the contents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents) . The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then appropriately 'decode' it on the PHP side?
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Maximum on http header values?
Is there an accepted maximum allowed size for HTTP headers? If so, what is it? If not, is this something that's server specific or is the accepted standard to allow headers of any size?
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How can I use vim to convert my file to utf8?
I have a text file. I've been told to make it UTF8. How can I do that with Vim?
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Difference between ProcessBuilder and Runtime.exec()
I'm trying to execute an external command from java code, but there's a difference I've noticed between Runtime.getRuntime().exec(...) and new ProcessBuilder(...).start() .
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Qt: How do I handle the event of the user pressing the 'X' (close) button?
I am developing an application using Qt. I don't know which slot corresponds to the event of "the user clicking the 'X'(close) button of the window frame" i.e. this button:
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What is a “first chance exception”?
What exactly is a first chance exception? How and where does it originate in a .NET program? And why is it called by that peculiar name (what 'chance' are we talking about)?
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