for free
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Related to for free: Free sample, Free Stuff
for free
Said of a capability of a programming language or hardware
equipment that is available by its design without needing
cleverness to implement: "In APL, we get the matrix operations
for free." "And owing to the way revisions are stored in this
system, you get revision trees for free." The term usually
refers to a serendipitous feature of doing things a certain
way (compare big win), but it may refer to an intentional
but secondary feature.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)