Is map containsKey case-insensitive?

What is containsKey in map Salesforce?

containsKey(key) Returns true if the map contains a mapping for the specified key .

containsKey(key) Returns true if the map contains a mapping for the specified key .

Apex Map In SalesForce

Apex Map In SalesForce

The Go Language is case sensitive .

The Go Language is case sensitive .

You can have a Map as key but as you pointed out since a Map is (typically) mutable the key changes.