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scala> implicitly[Int <:< AnyVal]
res0: <:<[Int,AnyVal] = <function1>
scala> class Foo
defined class Foo
scala> class Bar extends Foo
defined class Bar
scala> implicitly[Foo <:< Bar]
<console>:8: error: could not find implicit value for parameter e: <:<[Foo,Bar]
implicitly[Foo <:< Bar]
^
scala> implicitly[Bar <:< Foo]
res2: <:<[Bar,Foo] = <function1>
How does <:< constraint work? Or more precisely, where is the implicit definition that supplies the instances of <:<?
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Hours of work is defined as the period during which employees are expected to carry out the duties assigned by their employer. It does not include any intervals allowed for rest, tea breaks and meals.
You receive support from teammates It's helpful to take notice of how you feel when at work. If you feel supported by your team and your manager, it's likely because they value you. This is a good indicator of being valued at work since your team consistently shows their support so you can succeed.
Overtime pay Overtime work is all work in excess of the normal hours of work (excluding breaks). You can claim overtime if you are: A non-workman earning up to $2,600. A workman earning up to $4,500.
You can find it in Predef. Implicit method conforms[A] provides these evidences:
implicit def conforms[A]: A <:< A = new (A <:< A) { def apply(x: A) = x }
You can actually try to implement it yourself in order to make it more clear:
abstract class subclassOf[-From, +To] extends (From => To)
implicit def subclassOfCheck[A]: A subclassOf A = new (A subclassOf A) { def apply(x: A) = x }
implicitly[Int subclassOf AnyVal]
class Foo
class Bar extends Foo
implicitly[Bar subclassOf Foo]
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