Presidents have often deployed troops with Congressional authorization, but without an explicit declaration of war.

Curl constructors are factories that facilitates using multiple-inheritance without explicit declaration of either interfaces or mixins.

In the case that this default behavior is actually the intended behavior, an explicit declaration can prevent ambiguity.

It contrasts with structural systems, where comparisons are based on the structure of the types in question and do not require explicit declarations.

Olusoga and Erichsen write: "It is an almost unique document: an explicit, written declaration of intent to commit genocide."

Vertices are stored in a counter-clockwise order by default, making explicit declaration of normals unnecessary.

Instead, they found that the state's right to regulate industry could not be forfeited except by an explicit declaration in law.

Tom Robinson explores the pressure Jimi was under to make an explicit political declaration.

An explicit declaration of the pronoun in English in the imperative mood is possible, usually for emphasis but not necessary:

A nominal type system means that the language decides whether types are compatible and/or equivalent based on explicit declarations and names.