tip o' hat to that
this minor edit, omitting {Any,Any} (following Jeff B's note) gives back
some autotyping
function procmap(d)
@capture(d, {xs__}) || return d
:(Dict($(map(prockey, xs)...)))
end
On Thursday, September 3, 2015 at 4:40:54 PM UTC-4, Mike Innes wrote:
>
> FWIW I mocked up a json syntax macro:
>
> using MacroTools, Lazy
>
> import MacroTools: prewalk
>
> function prockey(key)
> @capture(key, (a_:b_) | (a_=>b_)) || error("Invalid json key $key")
> isa(a, Symbol) && (a = Expr(:quote, a))
> :($a=>$b)
> end
>
> function procmap(d)
> @capture(d, {xs__}) || return d
> :(Dict{Any, Any}($(map(prockey, xs)...)))
> end
>
> macro json(ex)
> @>> ex prewalk(procmap) esc
> end
>
> Michael's original example becomes:
>
> data = @json {
> displayrows: 20,
> cols: [
> { col: "l1" },
> { col: "l2" },
> { col: "l3" },
> { col: "num", display: true },
> { col: "sum", display: true, conf: { style: 1, func: {
> method: "sum", col: "num" } } }
> ]
> # ...
> }
>
> You might argue that it's actually nicer than the original.
>
> On Thu, 3 Sep 2015 at 21:22 Scott Jones <[email protected]
> <javascript:>> wrote:
>
>> Another use is marking off the keyword arguments or parameters.
>>
>>
>> On Thursday, September 3, 2015 at 3:11:34 PM UTC-4, Jonathan Malmaud
>> wrote:
>>>
>>> What are the other uses of ; in Julia? I can only think of suppressing
>>> output on the REPL and separating expressions on a single line - neither
>>> seems inconsistent or really related at all to the use within [].
>>>
>>> On Thursday, September 3, 2015 at 3:06:22 PM UTC-4, Scott Jones wrote:
>>>>
>>>>
>>>>
>>>> On Thursday, September 3, 2015 at 1:47:07 PM UTC-4, Sean Marshallsay
>>>> wrote:
>>>>>
>>>>> [1:10;] is simply a consequence of matrix literal syntax (like [1:10;
>>>>> 11:20]) and gets translated into vcat(1:10). It might be a bit confusing
>>>>> but there's no point in making it a special case
>>>>>
>>>>
>>>> Yes, I understand that, and that too is not consistent with the use of
>>>> ; outside of [ ].
>>>> spaces, colon, semicolon, and commas are all treated specially instead
>>>> of [ ], which can be rather confusing.
>>>> Some of that special behavior is being deprecated, but some remains.
>>>>
>>>>
>>>
