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return type in database constructor


return type in database constructor

By : Alvaro Isaza
Date : November 18 2020, 03:01 PM
fixed the issue. Will look into that further Your constructor name needs to match the Java class name. Your class is DatabaseConnection. Your constructor is Connection. These are not the same. Rename one to match the other.
code :


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Query on Junit @parameters method's return type and the test class constructor argument type

Query on Junit @parameters method's return type and the test class constructor argument type


By : Jonno James
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , As you suggested the values are being casted. The casting is actually done by the Java reflection API, specifically: Constructor.newInstance(Object...).
If you're curious, the above method is invoked by JUnit on line 186, here (JUnit v4.11 source).
Why is move constructor not picked when returning a local object of type derived from the function's return type?

Why is move constructor not picked when returning a local object of type derived from the function's return type?


By : Christian
Date : March 29 2020, 07:55 AM
it fixes the issue The following code is rejected by both Clang and GCC (trunk versions): , [class.copy]/32 continues:
TypeScript infer the callback return type in type constructor

TypeScript infer the callback return type in type constructor


By : user2651852
Date : March 29 2020, 07:55 AM
I hope this helps you . As of TS3.4 there is no support for partial type argument inference, so you can't easily have the compiler let you specify S but infer R. But from your example, it doesn't look like you want to infer R as some concrete type, but allow it to remain generic so that the return type of fn can be whatever it wants to be when you call d().
So it looks like you really want this type:
code :
type Dig<S> = <R>(s: S, fn: (s: S) => R) => R;
const d: Dig<string> = (s, fn) => fn(s);

const num = d("hey", (x) => x.length); // num is inferred as number
const bool = d("you", (x) => x.indexOf("z") >= 0); // bool inferred as boolean
If constructor is a method, that doesnt return anything why is there no return type as void? C#

If constructor is a method, that doesnt return anything why is there no return type as void? C#


By : Eric Moore
Date : March 29 2020, 07:55 AM
wish of those help If the return type was (in language/syntax terms) always "void", what would be the point of saying "void"? It would be redundant, and could only serve as something to get wrong. If "void" is the only valid option, why would we need to tell the compiler? Why not just omit it completely?
TS2409: Return type of constructor signature must be assignable to the instance type of the class

TS2409: Return type of constructor signature must be assignable to the instance type of the class


By : Arthur Los
Date : March 29 2020, 07:55 AM
I wish did fix the issue.
compilation is good but with this type error :TS2409: Return type of constructor signature must be assignable to the instance type of the class
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