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How to verify a user's password in Devise

I'm having a problem matching user password using devise gem in rails. User password stored on my db which is encrypted_password and i am trying to find user by password, but I don't understand how to match password from form and encrypted_password in my db. ...
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How do I import .sql files into SQLite 3?

I have .sql files which have the following content: 4 Answers 4 ...
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What is the difference between README and README.md in GitHub projects?

I've noticed some GitHub projects have not only a README file, but also a README.md file. 4 Answers ...
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How do I test for an empty string in a Bash case statement?

I have a Bash script that performs actions based on the value of a variable. The general syntax of the case statement is: 3...
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What breaking changes are introduced in C++11?

I know that at least one of the changes in C++11 that will cause some old code to stop compiling: the introduction of explicit operator bool() in the standard library, replacing old instances of operator void*() . Granted, the code that this will break is probably code that should not have been v...
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Difference between float and double in php?

I have this code 4 Answers 4 ...
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Unix shell script to truncate a large file

I am trying to write a Unix script which will truncate/empty a file which is continuously being written/open by an application when it reaches say 3GB of space. I know that the below command would do it : ...
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What can I do with a moved-from object?

Does the standard define precisely what I can do with an object once it has been moved from? I used to think that all you can do with a moved-from object is do destruct it, but that would not be sufficient. ...
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In Python, how to display current time in readable format

How can I display the current time as: 6 Answers 6 ...
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Difference between Activity and FragmentActivity

I was working on fragments and came across two things Activity and FragmentActivity which are used several times. I want to know that is there any difference between these two, because when I changed Activity with FragmentActivity , it had no effect on the app. ...