Themes and plot devices in Hitchcock films Themes and plot devices in Hitchcock films Alfred Hitchcock's films show an interesting tendency towards recurring themes and plot devices throughout his life as a director. This article lists some of the themes and plot devices that occur repeatedly in his films. There are images of birds in nearly all of Hitchcock's films. Some of the most prominent are listed below. Black people appear mostly as background characters in many of his films, except Philippe Dubois who is both intelligent and clever, The church have appeared in some of this films, Cultured villains have been shown in many of his
Dangling else Dangling else The dangling else is a problem in computer programming in which an optional else clause in an if–then(–else) statement results in nested conditionals being ambiguous. Formally, the reference context-free grammar of the language is ambiguous, meaning there is more than one correct parse tree. In many programming languages one may write conditionally executed code in two forms: the if-then form, and the if-then-else form – the else clause is optional: This gives rise to an ambiguity in interpretation when there are nested statements, specifically whenever an if-then form appears as codice_1 in an if-then-else form: In this example,