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Read this article in: Russian, German. This is the second edition of the JavaScript. The Core overview lecture, devoted to ECMAScript programming language and core components of its runtime system. Note: see also Essentials of Interpretation course, where we build a programming language similar to JavaScript, from scratch. Audience: advanced engineers, experts. The first edition of the article cov

Dmitry Soshnikov Software engineer interested in learning and education. Sometimes blog on topics of programming languages theory, compilers, and ECMAScript. In this small note we’ll cover another ES6 feature, function parameters with default values. As we will see there are some subtle cases there. Manual defaults from ES5 and lower Previously default parameter values were handled manually in sev

That’s said, they differ only in the assignment semantics: “by reference” can replace the full contents, and “by sharing” instead rebinds the pointer to the new address. In fact, references in C++ are just a syntactic sugar for pointers. At the lower level they are even compiled to the same exact instructions, and hold the same values — that is, addresses. However, references change the high-level

CoffeeScript's port of the Scheme's Metacircular Evaluator – chapter 4.1 of the SICP. Version: 0.1. History: Ctrl + ↑ / Ctrl + ↓. Eval: Ctrl + Enter or the button "eval" below. Source: scheme-on-coffee on Github. ECMAScript info: http://dmitrysoshnikov.com Expression input: (+ 1 2 3)clear expression input on eval Examples (click to eval): 1. Sum: (+ 1 2 3) 2. Define a variable in the Global enviro

Read this article in: German, Russian, French, Polish. Note: a new 2nd Edition of this article is available. This note is an overview and summary of the “ECMA-262-3 in detail” series. Every section contains references to the appropriate matching chapters so you can read them to get a deeper understanding. Intended audience: experienced programmers, professionals. We start out by considering the co

Introduction This is the second part of article about object-oriented programming in ECMAScript. In the first part we discussed the general theory and drew parallels with ECMAScript. Before reading of the current part, if it is necessary, I recommend reading the first part as in this article we will actively use the passed terminology. You can find the first part here: ECMA-262-3 in detail. Chapte

Dmitry Soshnikov Software engineer interested in learning and education. Sometimes blog on topics of programming languages theory, compilers, and ECMAScript. Introduction In this chapter we will concentrate on another feature of the ECMA-262-5. The topic of the discussion is a strict variant (or strict mode) of an ECMAScript program. We’ll discuss the reasons for providing this feature, how it aff

Explore more courses in [ dmitrysoshnikov.education] school. ⭐️ Programming Languages: Ultimate – 3rd Edition The bundle includes all courses related to building a programming language, going deep into Compilers, Virtual Machines, LLVM, Parsers, Typecheckers, and other aspects. Read more →