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Rails “validates_uniqueness_of” Case Sensitivity
...validates_uniqueness_of :name, :case_sensitive => false does the trick, but you should keep in mind that validates_uniqueness_of does not guarantee uniqueness if you have multiple servers/server processes (e.g. running Phusion Passenger, multiple Mongrels, etc) or a multi-threaded server. That's...
How can I get the full object in Node.js's console.log(), rather than '[Object]'?
When debugging using console.log() , how can I get the full object?
17 Answers
17
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How do I get an animated gif to work in WPF?
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I couldn't get the most popular answer to this question (above by Dario) to work properly. The result was weird, choppy animation with weird artifacts.
Best solution I have found so far:
https://github.com/XamlAnimatedGif/WpfAnimatedGif
You can install it with NuGet
PM> Install...
Hashing a file in Python
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TL;DR use buffers to not use tons of memory.
We get to the crux of your problem, I believe, when we consider the memory implications of working with very large files. We don't want this bad boy to churn through 2 gigs of ram for a 2 g...
How to create GUID / UUID?
I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc.
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Ruby class types and case statements
What is the difference between
5 Answers
5
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Difference between & and && in Java? [duplicate]
I was just wondering what the difference between & and && is?
A few days I wrote a condition for an if statement the looked something like:
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How to convert list of tuples to multiple lists?
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The built-in function zip() will almost do what you want:
>>> zip(*[(1, 2), (3, 4), (5, 6)])
[(1, 3, 5), (2, 4, 6)]
The only difference is that you get tuples instead of lists. You can convert them to lists using
ma...
Running multiple commands in one line in shell
...; mv /templates/apple /templates/inuse
To summarize (non-exhaustively) bash's command operators/separators:
| pipes (pipelines) the standard output (stdout) of one command into the standard input of another one. Note that stderr still goes into its default destination, whatever that happen to ...
Most efficient conversion of ResultSet to JSON?
...g code converts a ResultSet to a JSON string using JSONArray and JSONObject .
14 Answers
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