I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not. ...

I want to get the first letter of a string and I've noticed that $str[0] works great. I am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right –...

I do not understand this process at all. I have been able to navigate to the folder containing the keytool in the Java SDK. Although I keep getting the error openssl not recognised as an internal or external command. The problem is even if I can get this to work, what would I do and with what afterw...

How can I specify a pane percentage in tmuxinator ? 1 Answer 1 ...

I have a repository in GitHub and I need to tag it. I tagged in a shell, but on GitHub , it is not showing up. 7 Answ...

In C# to use a TcpClient or generally to connect to a socket how can I first check if a certain port is free on my machine? ...

When I do a Get Latest in Visual Studio, if there are conflicts, there is nothing that is displayed to me to make it obvious. Invariably I think everything is OK, do a build, and often the build works. ...

I want to know the difference between ObservableCollection and BindingList because I've used both to notify for any add/delete change in Source, but I actually do not know when to prefer one over the other. ...

I have a command that runs fine if I ssh to a machine and run it, but fails when I try to run it using a remote ssh command like : ...

I'm new to postgresql, and locally, I use pgadmin3. On the remote server, however, I have no such luxury. 24 Answers ...