[Haskell-cafe] Re: [Haskell-beginners] appropriateness of haskell
aneumann at inf.fu-berlin.de
Sat Mar 21 10:52:27 EDT 2009
Am 21.03.2009 um 13:30 schrieb Michael Mossey:
> Thomas Davie wrote:
>> On 21 Mar 2009, at 00:16, Michael P Mossey wrote:
>>> Hello, I'm totally new to Haskell. I'm thinking of using it for a
>>> personal project, which is a gui-based musical score editor.
>> The rough situation of GUI programming on Haskell is that it works
>> just as well as in any imperative programming language. This is
>> rather disappointing, simply because so many other things are
>> massively easier in Haskell, and this isn't true of GUI
>> programming (yet).
> Hi Bob,
> I can imagine that GUI programming is no easier (yet). It is
> inherently very "stateful." GUI's have modes, such as which screens
> are displayed, which dialogs are displayed, which options within
> those dialogs are valid given the other state of the program, etc.
> When I write GUIs, I often diagram them as state machines to get a
> handle on what's going on.
> So, I'm not familiar with GUI programming on Haskell, but would you
> say the statefulness of GUIs (in their typical implementations) is
> the reason they are no easier on Haskell?
> I strongly prefer to use qtHaskell because I'm familiar with Qt,
> and Qt is extremely capable. For example, it can draw text and
> shapes with antialiasing, which will be great for a music score
> editor. Music scores have lots of small shapes to fit on the
> screen, and antialiasing will provide ease of reading. I don't know
> how much of Qt is implemented in qtHaskell, or whether the latest
> version of Qt (4.4) is implemented.
The main problem is, as far as I know, the complete lack of any
usable GUI designer. You have to type everything yourself. That's
very annoying. It's a lot easier in other languages because your
tools take away the cumbersome twiddling with widgets.
However, I haven't googled. Maybe the situation has changed since I
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