Stating the obvious, a web browser with a search engine.
Then custom scripts I made to do specific tasks on hundreds of files. So familiar scripting languages, in general, such as those regularly used at work. I had actually used MatLab for non scientific uses like batch downloading, or batch image/audio format conversion.
And a modern IDE that prevents many errors in the first place. VS Intellisense does it for me, but I guess there are equivalents in other development environments.
Then custom scripts I made to do specific tasks on hundreds of files. So familiar scripting languages, in general, such as those regularly used at work. I had actually used MatLab for non scientific uses like batch downloading, or batch image/audio format conversion.
And a modern IDE that prevents many errors in the first place. VS Intellisense does it for me, but I guess there are equivalents in other development environments.