I have two HashMaps: FOO & BAR.
HashMap FOO is a superset of HashMap BAR.
How do I find out what ‘keys’ are missing in HashMap BAR (i.e. exists in FOO but not BAR)?
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I have two HashMaps: FOO & BAR.
HashMap FOO is a superset of HashMap BAR.
How do I find out what ‘keys’ are missing in HashMap BAR (i.e. exists in FOO but not BAR)?
If you’re using google-collections (and realistically I think it should be on the classpath of more or less every non-trivial Java project) it’s just: