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Run a callback only if an attribute has changed in Rails
I have the following association in my app:
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Private vs Public in Cache-Control
Can you please describe an example indim>cat m>ing difference between Public and Private Cache-Control in asp.net applim>cat m>ions hosted in IIS.
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Git file permissions on Windows
I've read through a few questions regarding file permissions in Git and I'm still a bit confused. I've got a repo on GitHub forked from another. Post merge, they should be identical. However:
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Rails 3: I want to list all paths defined in my rails applim>cat m>ion
I want to list all defined helper path functions (that are created from routes) in my rails 3 applim>cat m>ion, if that is possible.
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Remove leading or trailing spaces in an entire column of data
How do I remove leading or trailing spaces of all cells in an entire column?
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Python memory usage of numpy arrays
I'm using python to analyse some large files and I'm running into memory issues, so I've been using sys.getsizeof() to try and keep track of the usage, but it's behaviour with numpy arrays is bizarre. Here's an example involving a map of albedos that I'm having to open:
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lock(new object()) — Cargo cult or some crazy “language special case”?
I'm reviewing some code written by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet:
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How does “304 Not Modified” work exactly?
My guess, if it's generated by the browser:
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Tool to Unminify / Decompress JavaScript [closed]
Are there any command line scripts and/or online tools that can reverse the effects of minifim>cat m>ion similar to how Tidy can clean up horrific HTML?
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
...LE * , returned by a call to fopen() . I need to get a file descriptor from it, to make calls like fsync(fd) on it. What's the function to get a file descriptor from a file pointer?
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