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Float vs Decimal in ActiveRecord

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Remove specific commit

...ent" is based on the default number of lines from a context diff, which is 3. So if 'myfile' was constructed like this: $ cat >myfile <<EOF line 1 junk junk junk junk line 2 junk junk junk junk line 3 EOF $ git add myfile $ git commit -m "initial check-in" 1 files changed, 11 insertions(...
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OSError: [Errno 2] No such file or directory while using python subprocess in Django

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Add to Array jQuery

... 301 For JavaScript arrays, you use push(). var a = []; a.push(12); a.push(32); For jQuery objec...
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Scala: Nil vs List()

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rails 3 validation on uniqueness on multiple attributes

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Android error: Failed to install *.apk on device *: timeout

... 1131 Try changing the ADB connection timeout. I think it defaults that to 5000ms and I changed mine...
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How do I get the number of elements in a list?

...both built-in types and library types. For example: >>> len([1,2,3]) 3 Official 2.x documentation is here: len() Official 3.x documentation is here: len() share | improve this answer ...
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How can I set the default value for an HTML element?

...the option you want to be the default. <option selected="selected"> 3 </option> share | improve this answer | follow | ...
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Using property() on classmethods

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