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Rails: how do I validate that something is a boolean?
Does rails have a validator like validates_numericality_of for boolean or do I need to roll my own?
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How do I fetch lines before/after the grep result in bash?
Hi I'm very new to bash programming. I want a way to search in a given Text. For that I use grep function:
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What is database pooling?
I just wanted to know the concept of database connection pooling and how it is achieved.
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Using two values for one switch case statement
In my code, the program does something depending on the text entered by the user. My code looks like:
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How to “pull” from a local branch into another one?
This sounds so simple, but I just can't figure it out. I made an experimental branch a while ago, and now I'd like to pull in all the changes that happened on master since I made it. This is all local. I want to pull from local master into local my_branch, but I can't do it. This doesn't seem to wor...
What's the difference between `1L` and `1`?
I often seen the symbol 1L (or 2L , 3L , etc) appear in R code. Whats the difference between 1L and 1 ? 1==1L evaluates to TRUE . Why is 1L used in R code?
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Git diff between current branch and master but not including unmerged master commits
I want a diff of all changes in a branch that is not merged to master yet.
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Transactions in .net
What are the best practices to do transactions in C# .Net 2.0. What are the classes that should be used? What are the pitfalls to look out for etc. All that commit and rollback stuff. I'm just starting a project where I might need to do some transactions while inserting data into the DB. Any respons...
Rsync copy directory contents but not directory itself
I'm trying to synchronize two contents of folders with different name:
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How to concatenate strings with padding in sqlite
I have three columns in an sqlite table:
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