January/February 2018 issue of acmqueue

The January/February issue of acmqueue is out now

Programming Languages

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Originally published in Queue vol. 11, no. 10
see this item in the ACM Digital Library



Robert C. Seacord - Uninitialized Reads
Understanding the proposed revisions to the C language

Carlos Baquero, Nuno Preguiça - Why Logical Clocks are Easy
Sometimes all you need is the right language.

Erik Meijer, Kevin Millikin, Gilad Bracha - Spicing Up Dart with Side Effects
A set of extensions to the Dart programming language, designed to support asynchrony and generator functions

Dave Long - META II: Digital Vellum in the Digital Scriptorium
Revisiting Schorre's 1962 compiler-compiler


(newest first)

chriss | Thu, 08 Dec 2016 09:12:54 UTC

this is a true senario, am really interested on how the information has just been flowed.and i love the fact that the IRs has been expanded in such a way that it is well understood. i personally i have found the information that i was looking for. finally i would like to know more about programming specifically in object oriented programming thank you

raiph | Mon, 02 Dec 2013 23:53:48 UTC

Here's how NQP's QAST (https://github.com/perl6/nqp/blob/master/docs/qast.markdown) informally stacks up against your bullet points:

" Completeness. Written in NQP. NQP is a simple functional/OO lang for writing compilers. A QAST tree consists of a tree of NQP objects made from about a dozen classes corresponding to very generic intermediate things (eg compilation units, closures, calls of closures, literal values, ops).

" Semantic gap. Er, no idea.

" Hardware neutrality. NQP is designed to be highly portable. It targets both existing VMs (JVM, CLR, etc.) and its own custom VM (MoarVM) which is itself highly portable.

" Manually programmable. QAST is just a tree of object declarations written in NQP.

" Extensibility. Extend the classes already defined for QAST or write new ones. Or write new NQP ops.

" Simplicity. Yeah. About a dozen types of object written in a simple language (NQP).

" Program information. QAST annotations.

" Analysis information. QAST annotations.

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