Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Type signature
open-in-new
<p>In <a href="/facts/Computer_science/lN3pEyPz">computer science</a>, a type signature or type annotation defines the inputs and outputs of a <a href="/facts/Function_(computer_programming)/9vFJrg0A">function</a>, <a href="/facts/Subroutine/9vFJrg0A">subroutine</a> or <a href="/facts/Method_(computer_programming)/8kAXxVYs">method</a>. A type signature includes the number, <a href="/facts/Data_type/fcx5hgVL">types</a>, and order of the function's <a href="/facts/Parameter_(computer_programming)/LcuLbbSq">arguments</a>. One important use of a type signature is for function <a href="/facts/Type_polymorphism/S3cCKsVT">overload</a> resolution, where one particular definition of a function to be called is selected among many overloaded forms. </p>