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"(computing) A structure in a programming code, like blocks, functions, subroutines, etc." The verb is well known. For instance, if you have an inner loop that looks at every column in a grid and an outer loop that looks at every row, you can "nest" them, which means you put one inside the other (and thus consider every grid cell, every combination of row and column). I learned this term in the 1980s. But I've never heard of this being a noun, and I distrust anybody who talks about "a programming code" as though it were singular. Equinox◑ 01:37, 7 July 2009 (UTC)
RFV failed, sense removed. I've added a related sense, based on google books:"loop nest" and "subroutine nest". (Note that the hits for the latter are not referring to nested subroutines, which are a source-code construct wherein one subroutine contains another, but rather to nested subroutine calls, which are a run-time construct that results from one subroutine calling another. In the hits for "loop nest", either interpretation is possible, since nested source-code loops lead directly to nested run-time loop iterations.) —RuakhTALK 19:41, 27 September 2010 (UTC)