Is there a best practice for defining custom error types in a Ruby library (gem) or Ruby on Rails application? Specifically: ...

I would like to be able to track a file and see which process is touching that file. Is that possible? I know that I can see the list of open processes in activity monitor but I think it's happening to quickly for me to see it. The reason for this is I'm using a framework and I think the system v...

I would like to change the format (class) of some columns of my data.frame object ( mydf ) from charactor to factor . 6 ...

I'm currently having problems in creating a schema for the document below. The response from the server always returns the "trk" field values as [Object]. Somehow I have no idea how this should work, as I tried at least all approaches which made sense to me ;-) ...

What is the difference between @Column and @Basic annotations in JPA? Can they be used together? Should they be used together? Or does one of them suffice? ...

Suppose I have a string which is a backslash-escaped version of another string. Is there an easy way, in Python, to unescape the string? I could, for example, do: ...

What does an lambda expression like _=> expr mean? 5 Answers 5 ...

...king on a project, but unfortunately, I forgot to switch to my branch, and as such have been working on master 4 Answers ...

Suppose I have a template function and two classes 4 Answers 4 ...

I'm trying to port some old MySQL queries to PostgreSQL, but I'm having trouble with this one: 6 Answers ...