Indirect Variable Referencing
It is possible to build arrays in DCL that are referenced through translated symbols. This allows the programmer to build arbitrarily sized data structures using the data itself as an indexing function.
$ i = 1 $ variable'i' = "blue" $ i = 2 $ variable'i' = "green" $ j = 1 $ color = variable'j' $ rainbow'color' = "red" $ color = variable'i' $ rainbow'color' = "yellow"In this example the variable rainbowblue is assigned the value "red", and rainbowgreen is assigned the value "yellow".
Read more about this topic: DIGITAL Command Language
Famous quotes containing the words indirect and/or variable:
“Imagination is always the fabric of social life and the dynamic of history. The influence of real needs and compulsions, of real interests and materials, is indirect because the crowd is never conscious of it.”
—Simone Weil (1909–1943)
“Walked forth to ease my pain
Along the shore of silver streaming Thames,
Whose rutty bank, the which his river hems,
Was painted all with variable flowers,”
—Edmund Spenser (1552?–1599)