David Virebayre wrote:
Heinrich Apfelmus:
I want to hear! Just a description. :) You can also mention why you find it interesting etc.
Well I have an old program sitting around. Anyway, it's very simple :
The GUI has - a window with a menu bar, 2 directory selects (source and dest directories), 1 file select ( the 'patch file'), 1 textview to write logging information, and a 'Convert' button to start. - an about window that opens from a 'About...' menuitem - A status bar.
The convert button stats an action that scans all applicable files in a source directory, converts them and writes them in a destination directory.
The conversion itself is irrelevant to the topic, in my case it consists in searching for patterns in the file and replacing them, according to a list of changes read from a file, the 'patch file'.
The progression is logged in the textview: file processed, strings replaced. In the status bar, a percentage bar grows.
Why do I find it interesting ?
Most of the time I would do a program like the above with a command line interface only. GUI programming can be tedious. Would FRP offer a way to code such a simple, boring example in a fun way ?
Also, FRP is often concerned with animations, but I'd really like to see if it works well for small utilities.
I have an old source code I can share, using gtk2hs, imperative style (and also beginner-ugly style :) ). It's about 200 lines of codes and a glade file. It just compiled and ran fine here.
Interesting! This looks very much like a command-line program in disguise, probably a perfect fit for Conal Elliott's tangible values. http://www.haskell.org/haskellwiki/TV Could you send me a few screenshots showing the program in action? Best regards, Heinrich Apfelmus -- http://apfelmus.nfshost.com