Just starting out

[Jesse Phillips]

Nick Sabalausky Wrote:

> "Jesse Phillips" <jessekphillips+d at gmail.com> wrote in message 
> news:j75t0k$2q6m$3 at digitalmars.com...
> >
> > I created a cmdln library to help with user interaction, which some seem
> > to like.
> >
> > https://github.com/he-the-great/JPDLibs/tree/cmdln
> >
> 
> Looks very nice. I have a similar (but probably more basic) thing, too (just 
> one function: "prompt"):
> 
> http://www.dsource.org/projects/semitwist/browser/trunk/src/semitwist/cmd/plain.d#L216
> 
> 
> // -- Basic string prompt ------
> string input1 = prompt("Type some stuff: ");
> 
> // -- String prompt with validation ------
> // (failureMsg is optional)
> string promptMsg = "Do you want 'coffee' or 'tea'? ";
> string failureMsg = "Please enter 'coffee' or 'tea', not '%s'";
> bool accept(string input)
> {
>     return ["coffee", "tea"].contains(tolower(input));
> }
> 
> // This will *not* return until the user enters a valid choice,
> // so we don't need to do any more validation.
> string input2 = prompt(promptMsg, &accept, failureMsg);

Interesting the similarities. I do provide more specialized functions for some of those:

auto input2 = menu(promptMsg, ["coffee", "tea"]);

auto input = require!(string, accept)(promptMsg);

I haven't provide the option of displaying an error message, but it could go in the delegate you use in require. And I suppose prompt is a better name than userInput.

On thing I've been kind of interested in is getting something set up that would allow providing the needed information via a config, args, or at runtime. but haven't done anything with that idea.