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Rails: FATAL - Peer authentication failed for user (PG::Error)
I am running my development on Ubuntu 11.10, and RubyMine
8 Answers
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How does a Java HashMap handle different objects with the same hash code?
As per my understanding I think:
14 Answers
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String concatenation: concat() vs “+” operator
Assuming String a and b:
11 Answers
11
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how to check the dtype of a column in python pandas
I need to use different functions to treat numeric columns and string columns. What I am doing now is really dumb:
6 Answer...
How do I undo the most recent local commits in Git?
I accidentally committed the wrong files to Git , but I haven't pushed the commit to the server yet.
86 Answers
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Should functions return null or an empty object?
What is the best practice when returning data from functions. Is it better to return a Null or an empty object? And why should one do one over the other?
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Bootstrap combining rows (rowspan)
I am testing Twitter Bootstrap and got stuck with
basic scaffolding with rows. I revisited their documentation number of times and I can see nesting columns where you can basically nest columns within a column but I cannot locate
the capability of combining rows into one and have it aligned with ...
Change key pair for ec2 instance
...S management console? I can stop the instance, I can create new key pair, but I don't see any link to modify the instance's key pair.
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“Insufficient Storage Available” even there is lot of free space in device memory
...fter installation it will take less than 20 MB. In Galaxy Note I , while updating my app, it's saying "Insufficient Storage Available", where there is 214 MB of free space in device memory (internal). It happens even trying to download a new app.
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Android: How can I get the current foreground activity (from a service)?
Is there a native android way to get a reference to the currently running Activity from a service?
12 Answers
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