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missing lifetime specifier [E0106] on type alias

rust,lifetime,type-alias
This code: use std::fmt; use std::result::Result::{self, Ok, Err}; #[derive(Clone)] #[derive(Copy)] enum Tile { White, Black, Empty } type Board = &[[Tile; 19]; 19]; Produces this error: Compiling go v0.1.0 (file:///home/max/gits/go_rusty) src/main.rs:12:14: 12:31 error: missing lifetime specifier [E0106] src/main.rs:12 type Board = &[[Tile; 19]; 19]; ^~~~~~~~~~~~~~~~~ error: aborting due to previous...

Avoid duplicate type alias in Scala class and companion object

scala,companion-object,type-alias
I'm a newbie in Scala, and I have a Scala program with a class and a companion object, and I want to use a type alias that is used : To define the methods of the class. Also I want to use the alias outside the class. For that I...

Is it possible to create a template alias?

c++,c++11,c++14,type-alias
Consider the following code: template< template< typename ... > class ... Ts > struct unite { template< typename ... T > struct type : Ts< T ... > ... { }; }; // This does not work as ::type does not name a type, but a template: // template< template<...

How do I create a recursive typealias in julia?

recursion,types,julia-lang,type-alias
I would like to create a nested tuple type, that can hold itself, or the particular type it contains. So I thought: typealias NestedTuple{T} Tuple{Union(T,NestedTuple{T}),Union(T,NestedTuple{T})} However this comes up with an error LoadError: UndefVarError: NestedTuple not defined How is this kind of typealias normally done? (I am in julia 0.4)...

How to use type parameter in typealias?

swift,generics,type-alias
I want to use a typealias for a function which is used in a generic class. One of the parameters of the function uses a generic type of the class. This is a simplified example: class Bar {} // no typealias - works class TestGeneric<T: Bar> { let myFunc: (T)...

block in Swift : return error “ is not convertible to ”

ios,swift,block,type-alias
I made a mistake but I cannot see how to solve it. I would like to load all the assets from GameScene and send a Bool in a completion method. I use typealias : should it be renamed twice for the two files (gameScene and gameController)? Then I have got...

Scala 2.11.5 compiler crash with type aliases and manifests

scala,generics,types,type-alias
It appears that passing an alias to a wild-carded parameterized type to a function that tries to get an implicit Manifest for the type will crash the Scala 2.11.5 compiler. The following can be pasted in the 2.11.5 REPL to reproduce the crash: class C[T] def f[T](implicit m: Manifest[T]) =...