Slightly off topic; I would love to see some form of what Scala calls
implicits in swift. For exactly this reason.
On Mon, 27 Jul 2015 05:10 Rick Mann wrote:
>
> > On Jul 26, 2015, at 20:57 , Jens Alfke wrote:
> >
> >
> >> On Jul 26, 2015, at 4:50 PM, Quincey Morris <
> quinceymor...@rivergates
> On Jul 26, 2015, at 20:57 , Jens Alfke wrote:
>
>
>> On Jul 26, 2015, at 4:50 PM, Quincey Morris
>> wrote:
>>
>> No. Swift doesn’t convert between numeric types automatically, so Double —>
>> CGFloat produces an error.
>
> I’m guessing this is only a problem when building 32-bit? Because
> On Jul 26, 2015, at 4:50 PM, Quincey Morris
> wrote:
>
> No. Swift doesn’t convert between numeric types automatically, so Double —>
> CGFloat produces an error.
I’m guessing this is only a problem when building 32-bit? Because in 64-bit,
CGFloat is equivalent to Double, so there shouldn’t
On Jul 26, 2015, at 17:42 , Rick Mann wrote:
>
> So, why can I do this?
>
> let n : NSNumber = M_PI
That’s bridged, not converted. :)
The Swift compiler has built-in knowledge of what can be bridged, and does a
typecast or value conversion according to context.
__
> On Jul 26, 2015, at 16:50 , Quincey Morris
> wrote:
>
> On Jul 26, 2015, at 16:38 , Rick Mann wrote:
>>
>> So, is a literal 0.0 not of type Double?
>
> No, it’s a numeric literal, so it has no numeric type. However your ‘addArc’
> function requires CGFloat parameters. Literal 0.0 is conv
On Jul 26, 2015, at 16:38 , Rick Mann wrote:
>
> So, is a literal 0.0 not of type Double?
No, it’s a numeric literal, so it has no numeric type. However your ‘addArc’
function requires CGFloat parameters. Literal 0.0 is convertible to CGFloat,
but Double M_PI isn’t convertible automatically.
> On Jul 26, 2015, at 16:34 , Quincey Morris
> wrote:
>
> On Jul 26, 2015, at 16:29 , Rick Mann wrote:
>>
>> addArc(CGPoint(x: 0, y: 0), 50.0, 0.0, M_PI)
>
> The problem in this case is that M_PI is a Double variable in Swift, not a
> compile time constant like in Obj-C. You will unfortunat
On Jul 26, 2015, at 16:29 , Rick Mann wrote:
>
> addArc(CGPoint(x: 0, y: 0), 50.0, 0.0, M_PI)
The problem in this case is that M_PI is a Double variable in Swift, not a
compile time constant like in Obj-C. You will unfortunately have to wrap it in
CGFloat(), then the constants should work fine
Also weird, I only have to cast the last two arguments, not the second.
> On Jul 26, 2015, at 16:07 , Quincey Morris
> wrote:
>
> On Jul 26, 2015, at 15:57 , Rick Mann wrote:
>>
>> I'm finding it a bit cumbersome to use CGFloat in graphics code in Swift,
>> because the compiler won't let me
> On Jul 26, 2015, at 16:07 , Quincey Morris
> wrote:
>
> On Jul 26, 2015, at 15:57 , Rick Mann wrote:
>>
>> I'm finding it a bit cumbersome to use CGFloat in graphics code in Swift,
>> because the compiler won't let me pass a floating-point literal to a
>> parameter that takes a CGFloat. I
On Jul 26, 2015, at 15:57 , Rick Mann wrote:
>
> I'm finding it a bit cumbersome to use CGFloat in graphics code in Swift,
> because the compiler won't let me pass a floating-point literal to a
> parameter that takes a CGFloat. I have to wrap them all in CGFloat().
I’m not seeing this. Do you
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