I guess X is the type that is represented by the struct, the meaning being
: "the type X is a struct that contains a field that is a pointer to a
value of the same type".
EDIT : I think the "next" word, which is here the name of the field, can
even be omitted. The relevant information here is to know the type X
contains a field of type *X, whether this field is named "next" or "child"
or anything else does not break the viability of the expression.
Le mar. 20 nov. 2018 à 12:38, komuW <komu...@gmail.com> a écrit :
> A contract can also be written in terms of a struct:
>>
>> contract linkedListNode {
>> X struct {
>> next *X
>> }
>> }
>>
>>
> In this example taken from the linked document; what is X?
>
>
> On Tuesday, 20 November 2018 05:38:31 UTC+3, Burak Serdar wrote:
>>
>> Hi,
>>
>> A while ago I sent an email to this list proposing an alternative way
>> to specify contracts using existing types, with a "like" keyword to
>> represent contracts on primitives. The idea stirred up some
>> discussion, I got some useful feedback, and eventually, it died down.
>> The idea stuck with me though, because it wasn't complete when I
>> proposed it, it had inconsistencies and unresolved problems. It turned
>> into this puzzle that I kept working on on the side, I started writing
>> a contracts/generics simulator, which I never finished, but it allowed
>> me to figure out a way to solve the problems the original idea had. So
>> the latest version of that proposal is now here:
>>
>> https://gist.github.com/bserdar/8f583d6e8df2bbec145912b66a8874b3
>>
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