http://www.perlmonks.org?node_id=394464


in reply to A "but" operator.

When it comes to boolean logic (truth tables, etc), "but" is "and". The only difference is one of emphasis/constrast (what theorbtwo was talking about). For example
1) I went to school and bob went to work. 2) I went to school but bob went to work.
The two statements are logically equivalent, but in #2 the writer wishes to emphasize the difference.

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