Multi-dimensional arrays are among the most fundamental and most useful data structures of all. In C++, excellent template libraries exist for arrays whose dimension is fixed at runtime. Arrays whose dimension can change at runtime have been implemented in C. However, a generic object-oriented C++ implementation of runtime-flexible arrays has so far been missing. In this article, we discuss our...

We present a systematic representation of C++, called IPR, for complete semantic analysis and semantics-based transformations. We describe the ideas and design principles that shaped the IPR. In particular, we describe how general type-based unification is key to minimal compact representation, fast type-safe traversal, and scalability. The IPR is general enough to handle real-world programs in...

In this proceedings we discuss the motivation, implementation details, and performance of a new physics code base called Grid. It is intended to be more performant, more general, but similar in spirit to QDP++[6]. Our approach is to engineer the basic type system to be consistently fast, rather than bolt on a few optimised routines, and we are attempt to write all our optimised routines directl...

In a time where the differences between static and dynamic languages are starting to fade away, this paper brings one more element to the “convergence” picture by showing that thanks to the novelties from the recent C++0x standard, it is relatively easy to implement a JavaScript layer on top of C++. By that, we not only mean to implement the language features, but also to preserve as much of it...

The current investigation aimed to understand primary factors motivating adoption of concurrency and multithreading capabilities by hedge funds, investment banks and trading desks and future trajectory of such implementations. Primary focus was on examining if the C++11 Standard represents a plausible basis for standardization among above institutions for concurrency and multithreading needs. T...

This document revises N1932 = Brown, et al.: Random Number Generation in C++0X: A Comprehensive Proposal. It incorporates all known corrections to that paper’s language and typography, including all emendations requested by the Library Working Group during its Berlin meeting (3–7 April, 2006). and also adopts the context of N2009 = Becker: Working Draft, Standard for Programming Language C++. C...

Limbo is an open-source C++11 library for Bayesian optimization which is designed to be both highly flexible and very fast. It can be used to optimize functions for which the gradient is unknown, evaluations are expensive, and runtime cost matters (e.g., on embedded systems or robots). Benchmarks on standard functions show that Limbo is about 2 times faster than BayesOpt (another C++ library) f...

The primary purpose of this paper is to excise concepts from the wording of the standard library's random number facility. In addition, we have herein provided wording to address all known related library issues (even for some that we believe ought be closed as NAD, in order to provide a basis for discussion). The usual color conventions are used throughout the text to denote the proposed chang...