Cosa (chi) è weak typing - definizione

<programming> Strict enforcement of type rules but with well-defined exceptions or an explicit type-violation mechanism. Weak typing is "friendlier" to the programmer than {strong typing}, but catches fewer errors at compile time. C and C++ are weakly typed, as they automatically coerce many types e.g. ints and floats. E.g. int a = 5; float b = a; They also allow ignore typedefs for the purposes of type comparison; for example the following is allowed, which would probably be disallowed in a strongly typed language: typedef int Date; /* Type to represent a date */ Date a = 12345; int b = a; /* What does the coder intend? */ C++ is stricter than C in its handling of enumerated types: enum animal CAT=0,DOG=2,ANT=3; enum animal a = CAT; /* NB The enum is optional in C++ */ enum animal b = 1; /* This is a warning or error in C++ */ (2000-07-04)

weak typing

In computer programming, one of the many ways that programming languages are colloquially classified is whether the language's type system makes it strongly typed or weakly typed (loosely typed). However, there is no precise technical definition of what the terms mean and different authors disagree about the implied meaning of the terms and the relative rankings of the "strength" of the type systems of mainstream programming languages.