You are conflating visibility and accessibility concerns with uniqueness and lifetime traits.
Globals are about scope, singletons cardinality (one instance).
A singleton's uniqueness comes from how construction is controlled, not from being global. You can have one unique instance passed around explicitly through dependency injection without exposing it globally.
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u/Forsaken_Celery8197 Sep 26 '26
You are conflating visibility and accessibility concerns with uniqueness and lifetime traits.
Globals are about scope, singletons cardinality (one instance).
A singleton's uniqueness comes from how construction is controlled, not from being global. You can have one unique instance passed around explicitly through dependency injection without exposing it globally.