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We all know that parsing is an important part of designing and implementing programming languages, but it’s the equivalent of Brussels sprouts: good for the diet, but a taste that only a select few enjoy. Unfortunately, I’ve come to realise that our general distaste for parsing is problematic. While many of us think that we’ve absorbed the advances of the 1960s into our collective understanding, I

Overview Unix’s time utility is a simple and often effective way of measuring how long a command takes to run (wall time). Unfortunately, running a command once can give misleading timings: the process may create a cache on its first execution, running faster subsequently; other processes may cause the command to be starved of CPU or IO time; etc. It is common to see people run time several times

Rust is a genuinely interesting programming language: it has a number of features which are without precedent in mainstream languages, and those features combine in surprising and interesting ways. In many cases, it’s a plausible replacement for C [1]: it leads to fairly fast code; and because it doesn’t have a garbage collector, its memory use is more predictable, which can be useful for some pro

Laurence Tratt laurie@tratt.net Bournemouth University, Poole, Dorset, BH12 5BB, United Kingdom. Abstract. Dynamically typed languages such as Python and Ruby have experienced a rapid growth in popularity in recent times. However, there is much confusion as to what makes these languages interesting relative to statically typed languages, and little knowledge of their rich history. In this chapter

Updated (February 07 2013): If you enjoy this article, you may also find the more academically-inclined article The Impact of Meta-Tracing on VM Design and Implementation interesting. [This is a long article because it covers a lot of ground that is little known by the computing mainstream, and easily misunderstood. If you’re familiar with the area, you may find yourself wanting to skip certain ex