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Determine if ActiveRecord Object is New

How can I check if an ActiveRecord object is new or is already persisted? 2 Answers ...
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function

I'm putting in some effort to learn Python, and I am paying close attention to common coding standards. This may seem like a pointlessly nit-picky question, but I am trying to focus on best-practices as I learn, so I don't have to unlearn any 'bad' habits. ...
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How is “int main(){(([](){})());}” valid C++?

I recently came across the following esoteric piece of code. 1 Answer 1 ...
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Django import error - no module named django.conf.urls.defaults

I am trying to run statsd/graphite which uses django 1.6. 2 Answers 2 ...
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NSDictionary - Need to check whether dictionary contains key-value pair or not

I just need to ask something as follow. Suppose I am having a dictionary. 2 Answers 2 ...
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How to iterate over associative arrays in Bash

Based on an associative array in a Bash script, I need to iterate over it to get the key and value. 4 Answers ...
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EditText, inputType values (xml)

Where can I find the values that InputType can has? 3 Answers 3 ...
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error: Libtool library used but 'LIBTOOL' is undefined

I am trying to automake the OrientDb C++ library, but getting some errors. 5 Answers ...
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Function to return only alpha-numeric characters from string?

I'm looking for a php function that will take an input string and return a sanitized version of it by stripping away all special characters leaving only alpha-numeric. ...
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mysql query order by multiple items

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