Презентация как код

[%step]
* Первый пункт
* Второй пункт
* Третий пункт

[cols="30a,70a"]
|===
|image::monalisa.jpg[]
|
* первый пункт
* второй пункт
* третий пункт
|===

[source,java]
----
class Unsound {
  static class Constrain<A, B extends A> {}
  static class Bind<A> {
    <B extends A>
    A upcast(Constrain<A,B> constrain, B b) {
      return b;
    }
  }
  static <T,U> U coerce(T t) {
    Constrain<U,? super T> constrain = null;
    Bind<U> bind = new Bind<U>();
    return bind.upcast(constrain, t);
  }
  public static void main(String[] args) {
    String zero = Unsound.<Integer,String>coerce(0);
  }
}
----

class Unsound {
  static class Constrain<A, B extends A> {}
  static class Bind<A> {
    <B extends A>
    A upcast(Constrain<A,B> constrain, B b) {
      return b;
    }
  }
  static <T,U> U coerce(T t) {
    Constrain<U,? super T> constrain = null;
    Bind<U> bind = new Bind<U>();
    return bind.upcast(constrain, t);
  }
  public static void main(String[] args) {
    String zero = Unsound.<Integer,String>coerce(0);
  }
}

[plantuml, intersections, png]
----
@startuml
skinparam dpi 180
class Employee {
}
class Retiree {
}
class Person {
  + getName(): String
}
interface Payable {
  + getMonthPayment: BigDecimal
}
Payable <|.. Employee
Payable <|.. Retiree
Person <|-- Employee
Person <|-- Retiree
Person <|-- Visitor
@enduml
----

[plantuml, deadlock, png]
----
@startuml
skinparam dpi 180
hide footbox
participant X
participant Y
participant LockA
participant LockB
X -> LockA: lock()
activate LockA
LockA --> X:
Y -> LockB: lock()
activate LockB
LockB --> Y
X -> LockB: lock()
note right
  Deadlock!
end note
Y -> LockA: lock()
@enduml
----