Insulince

Meta Type Narrowing

class Model {
  static isModel(object: any): object is Model { // `object` is an instance of `Model` class, if...
    return !!object && // It is truthy AND...
      !!object.__proto__.constructor.isModel && // It contains a static property with the same name as this function AND...
      typeof object.__proto__.constructor.isModel === "function"; // That static property is a function.
  }
}

Insulince

package main

import (
	"fmt"
)

func main() () {
	for num := 0; num < 16; num++ {
		fmt.Println(num, map[bool]string{
			true: map[bool]string{

Insulince

package main

import (
    "fmt"
)

func main() () {
    predicate := true
    fmt.Println(map[bool]string{true:  "a", false: "b"}[predicate])
}