[swift-users] Swift BMI

[Eimantas Vaiciunas]

I exchanged a class to an enum since the BMI values are a finite set. This
eliminates a need for valid value check since the switch that is used to
initialise the enum value is exhaustive.

http://swiftstub.com/242291010/

On Tue, Dec 15, 2015 at 3:30 PM, Erica Sadun via swift-users <
swift-users at swift.org> wrote:

> Leaving aside typos, any discussion about the merits of BMI, and the
> intemperate language in the code, you do a few things that could be
> improved upon language-wise. Of these, the most egregious is the final
> "break the machine" else statement that can never be reached.
>
> The following example does several things:
> http://swiftstub.com/358512527
>
> * Adds a precondition to ensure that clients have passed valid arguments
> * Uses an enumeration (with a default value) instead of overloading a
> class function with nearly identical code
> * Introduces a multiplier to address the kg/lb difference
> * Establishes an upper case name for the class
> * Uses a switch statement instead of cascaded ifs
> * Returns a String instead of running procedurally
>
> -- E
>
>
> On Dec 14, 2015, at 8:20 PM, Gage Morgan via swift-users <
> swift-users at swift.org> wrote:
>
> For most languages I try out, my own version of "Hello World!" is a BMI
> calculator. Swift has passed, I encourage you to try it out.
>
> There are two methods called towards the end of file:
> 1) bmi.pounds(weight, height) - Replace numbers inside with your own if
> you want to test out in US Customary units.
>
> 2) bmi.kilograms(weight, height) - Replace numbers inside with your own if
> you want to test out in Metric units used everywhere outside the US.
>
> You already get the gist, the bits can be found here:
> https://gist.github.com/anonymous/9284017644567c29c7f8
>
> If there's a bug please let me know, but it works in IBM's Sandbox.
> (Yes, ALL code was written by me without help. Very close to C, just a bit
> laid back.)
> --MGage--
>
> _______________________________________________
> swift-users mailing list
> swift-users at swift.org
> https://lists.swift.org/mailman/listinfo/swift-users
>
>
>
> _______________________________________________
> swift-users mailing list
> swift-users at swift.org
> https://lists.swift.org/mailman/listinfo/swift-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-users/attachments/20151215/1db4f3fb/attachment.html>