function call overhead
(subject changed from: RE: [Rd] Avoiding name clashes: opinion on best practice naming conventions) Dominick Is this really true? Is there a speed advantage to defining a local function this way, say, within another function, and then calling it within a loop rather than the original? Do you have data on this? Paul
-----Original Message----- From: r-devel-bounces at r-project.org [mailto:r-devel-bounces at r- project.org] On Behalf Of Dominick Samperi Sent: February 16, 2011 12:44 PM
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Since the resolution of myPkg::foo() occurs at runtime (via a function call) instead of at compile time (as it would in C++), this practice can introduce a significant performance hit. This can be avoided by doing something like: mylocalfunc <- myPkg::foo [tight loop that uses mylocalfunc repeatedly] Here mylocalfunc would not be exported, of course. Dominick
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