理解Windows is a first-class citizen, in our world.

• 缘起

  在pipenv的homepage第一段,有这么一句话:

  Windows is a first-class citizen, in our world.

• First-class citizen

  In programming language design, a first-class citizen (also type, object, entity, or value) in a given programming language is an entity which supports all the operations generally avaiable to other entites.

  These operations typically include being passed as an argument, returned from a function, modified, and assigned to a variable.

  The concept pf first- and second-class object was introduced by Christopher Strachey in the 1960s.

• References

1. About first-,second- and third-class value