inline

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inline - Free On-line Dictionary of Computing (26 May 2007) :

  inline
  unfold
  
     <programming> (Or "unfold") To replace a function call with
     an instance of the function's 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 h's body in f.
  
     See also linear argument, unfold/fold.
  
     (1994-11-03)