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Add a reference column migration in Rails 4
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Rails 4.x
When you already have users and uploads tables and wish to add a new relationship between them.
All you need to do is: just generate a migration using the following command:
rails g migration AddUserToUploads user:references
Which will create a migr...
How do I decode HTML entities in Swift?
I am pulling a JSON file from a site and one of the strings received is:
23 Answers
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Store pictures as files or in the database for a web app?
My question is fairly generic and I know there might not be an 100% answer to it. I'm building an ASP .NET web solution that will include a lot of pictures and hopefully a fair amount of traffic. I do really want to achieve performance.
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How to completely uninstall Android Studio on Mac?
I recently downloaded Android Studio on my Macbook Pro and I messed up with it every time I open it. It gives me plugin errors and several other errors. I need to uninstall it completely from my mac. I tried to delete it from my mac and then install it again as if you would do the first time, but it...
What's the difference between Perl's backticks, system, and exec?
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exec
executes a command and never returns.
It's like a return statement in a function.
If the command is not found exec returns false.
It never returns true, because if the command is found it never returns at all.
There is also no point ...
Where does Console.WriteLine go in ASP.NET?
...unning in WebSphere), when I use System.out.println() , my text goes to standard out, which is mapped to a file by the WebSphere admin console.
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zsh compinit: insecure directories
What does it mean and how can I fix it?
22 Answers
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Simple way to copy or clone a DataRow?
... to make a clone of a DataRow. Kind of like taking a snapshot of that Row and saving it. The values of original Row are then free to change but we still have another saved copy which doesn't change. Is this the correct way to do it?
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Can git automatically switch between spaces and tabs?
...butes which contains:
*.py filter=tabspace
Linux/Unix
Now run the commands:
git config --global filter.tabspace.smudge 'unexpand --tabs=4 --first-only'
git config --global filter.tabspace.clean 'expand --tabs=4 --initial'
OS X
First install coreutils with brew:
brew install coreutils
Now...
Is it possible to program iPhone in C++
...to mash a few test apps together, but I find the syntax a little backwards and I am sure that I am doing things that lead to memory leaks etc just through lack of knowledge of Objective-C
– Lea Hayes
Jul 30 '11 at 14:26
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