Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

TypeScript: Implicit cast from any to everything?

The any type is a special type. Where possible, you should avoid using the any type unless you want to take advantage of dynamic types.

The any type is a short way of saying...

Treat this variable as if it were compatible with any other type.

So you can assign it to a string, a number, an array, an object, a interface with any structure... anything at all.

So don't think of it as being an any type, think of it as being "a string if I assign it to a string".

You can avoid accidental use of the any type by passing the --noImplicitAny compiler flag (or setting your project settings to use this flag).

Categories : Typescript

Related to : TypeScript: Implicit cast from any to everything?
Implicit class in Scala
An implicit class is just a shorthand for class Foo(a: A) implicit def pimpMyA(a: A) = new Foo(a) You can annotate a class as implicit if its constructor takes exactly one non-implicit parameter. Here's the relevant doc where you can read more about it: In your specific example, it means that any Seq[A] can be implicitly lifted

Categories : Scala
Implicit conversion sequence
The rest of the quote you omitted might be illuminating: § An implicit conversion sequence is a sequence of conversions used to convert an argument in a function call to the type of the corresponding parameter of the function being called. The sequence of conversions is an implicit conversion as defined in Clause 4, which means it is governed by the rules for initialization

Categories : C++
Implicit template overloading
Ignoring your strange design (instead of inheriting from zero-length string, why not just create a normal class, call it fixed_string_base, and put all the functions [and possibly variables] there?), you can just provide user-defined conversion - template<int N> class fixed_string : public fixed_string<0> { ... operator f

Categories : C++
Example of ill-formed implicit conversion
Simple example in § [over.ics.ref]/p4: [ Example: a function with an “lvalue reference to int” parameter can be a viable candidate even if the corresponding argument is an int bit-field. The formation of implicit conversion sequences treats the int bit-field as an int lvalue and finds an exact match with the parameter. If the function is selected by overload resolution,

Categories : C++
Implicit type discovery for generics
There is no type inference in generic type declarations on initialization. You can only omit the generic argument when calling a generic method but it is not the case with initializing a generic type for example: var list = new List { 2, 3, 4 }; Here you may expect compiler to see that you wanna create a list of int so there is no need to specify type argument.But it is not the case. In your s

Categories : C#
Recently Add
How to remove TypeScript warning: property 'length' does not exist on type '{}'
TypeScript: Implicit cast from any to everything?
Is the Function interface missing a new() signature?
typescript import alias or variable declaration with commonjs
© Copyright 2017 Publishing Limited. All rights reserved.