1. inline Or "unfold" To replace a function call with an instance of the functions body. Actual argument expressions are substituted for formal parameters as in beta reduction. Inlining is usually done as a compile-time transformation. If done recklessly e. g. attempting to inline a recursive function the compiler will fail to terminate. If done over-enthusiastically the code size may increase exponentially, e. g. if function f calls g twice, and g calls h twice and h is inlined in g which is inlined in f in either order then there will be four copies of hs body in f. See also linear argument, unfold/fold.
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