authorization
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Authorizations
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True
ye
True
No they don't need a warrant. They can enter and arrest the individual. They are not authorized to do a full search of the residence, however, they can search the immediate vicinity of the individual for things he may have stashed or weapons that might pose a threat to the officers.
The scope resolution operator, ::, overrides local scope and allows access to objects that are hidden due to global to local scope rules.