ios - Initializing a Struct in Swift Error: Generic parameter could not be inferred -


i'm trying declare struct in class without providing parameters. struct need initialized function should visible entire class. normally, i'm able var mystruct : mystruct? time it's giving me error.

generic parameter 'type' not inferred

am initializing struct incorrectly?

how i'm using it:

class myclass: {      static let sharedinstance = myclass()     private override init() {}      let mystruct = mystruct? // <-- above error occurs here.      // let mystruct = mystruct<int>? // <-- error: expected member name or constructor call after type name     // let mystruct = mystruct<int>?() // <-- error: cannot invoke initializer type 'mystruct<double>?' no arguments      func runfunction(a: int, b: int) {        mystruct(var1: a, var2: b) // <-- need initialize here.     }     func otherfunction() {        mystruct.dostuff() // <-- , have access in other functions     }

code struct:

public struct mystruct<type: custominput>: customprotocol {     public let myvar1: type     public let myvar2: type     public init(var1: type, var2: type) {         self.myvar1 = var1         self.myvar2 = var2     }  ... }

for generic type, generic parameter considered part of type. type of struct isn't mystruct, it's mystruct<int> (or whatever generic type use. therefore, can't declare type if there's not information compiler use infer actual type. instead, have include generic type in declaration:

var mystruct: mystruct<int>?


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