[swift-evolution] [Review] SE-0101: Rename sizeof and related functions to comply with API Guidelines

[Dave Abrahams]

on Wed Jun 29 2016, Erica Sadun <erica-AT-ericasadun.com> wrote:

>> On Jun 29, 2016, at 3:59 PM, Xiaodi Wu via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> On Wed, Jun 29, 2016 at 4:50 PM, David Sweeris <davesweeris at mac.com <mailto:davesweeris at mac.com>> wrote:
>> That’s the “as proposed” usage for getting the size of a value (from
>> https://gist.github.com/erica/57a64163870486468180b8bab8a6294e
>
>> <https://gist.github.com/erica/57a64163870486468180b8bab8a6294e>)
>> // Types
>> MemoryLayout<Int>.size // 8 
>> MemoryLayout<Int>.arraySpacing // 8
>> MemoryLayout<Int>.alignment // 8
>> 
>> // Value
>> let x: UInt8 = 5
>> MemoryLayout(x).dynamicType.size // 1
>> MemoryLayout("hello").dynamicType.arraySpacing // 24
>> MemoryLayout(29.2).dynamicType.alignment // 8
>> 
>> 
>> At least, I thought that was the latest version of the proposal. Maybe I’ve gotten confused.
>> 
>> There must be a typo in these examples. `MemoryLayout(x.dynamicType).size` perhaps?
>
> I have listened. I have updated.
>
> https://gist.github.com/erica/57a64163870486468180b8bab8a6294e
>
> // Types
> MemoryLayout<Int>.size // 8
> MemoryLayout<Int>.arraySpacing // 8
> MemoryLayout<Int>.alignment // 8
>
> // Value
> let x: UInt8 = 5
> MemoryLayout.of(x).size // 1
> MemoryLayout.of(1).size // 8
> MemoryLayout.of("hello").arraySpacing // 24
> MemoryLayout.of(29.2).alignment // 8

I am still very skeptical that anyone needs the “Value” version, and as
long as we're resyntaxing I am inclined to take it away and see how many
people complain.  You can still always write it yourself.

-- 
Dave