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Lexical analysis is the first stage of a compilation process. It's used for getting a token sequence from source code. It gets an input character sequence and finds out what the token is in the start position, whether it's a language keyword, an identifier, a constant (also called a literal), or, maybe, some error. A lexical analyzer (also known as tokenizer) sends a stream of tokens further, into a parser, which builds an AST (abstract syntax tree).
It's possible to write a lexer from scratch, but much mo
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PayPay and Alipay+ announced an extended partnership at the Singapore FinTech Festival 2024, to increasing merchant coverage across Japan. PayPay, Japan’s leading QR payment operator, and AliPay+, Ant International’s mobile payment method that helps merchants reach shoppers in Asia, will now connect over three million local merchants to the global payment ecosystem. The extended partnership... Read more » Read more ›
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Illustration by Cath Virginia / The Verge If you’re looking to catch up on recent shows and movies — including Shogun, The Penguin, and Dune: Part Two — the upcoming holiday weekend is the perfect time to do so. Thankfully, multiple streaming services are slashing subscription prices ahead of Black Friday and Cyber Monday, including Max, Hulu, and others. Right now, for example, you can sign up for a year... Read more ›
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![[Translation] PostgreSQL 18: Part 1 or CommitFest 2024-07](https://times42.com/media/6/3/6/9539636_640x200.jpg "[Translation] PostgreSQL 18: Part 1 or CommitFest 2024-07")
This article is the first in the series about the upcoming PostgreSQL 18 release. Let us take a look at the features introduced in the July CommitFest. Planner: Hash Right Semi Join support Planner: materializing an internal row set for parallel nested loop join Planner support functions for generate_series EXPLAIN (analyze): statistics for Parallel Bitmap Heap Scan node workers Functions min and max for composite types Parameter names for regexp*... Read more ›
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The explicit reparameterization trick is often used to train various latent variable models due to the ease of calculating gradients of continuous random variables. However, due to its peculiarities, explicit reparameterization trick is not applicable to several important continuous standard distributions, such as mixture, Gamma, Beta and Dirichlet.An alternative method for calculating reparameterization gradients relies on implicit differentiation of cumulative distribution functions. The implicit reparame Read more ›
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1. The purpose of the IT product Telepathy – the brain-computer interface of  NueralinkThe UN General Assembly Resolution of 22.03.2024 No. A/78/L.49 “Harnessing the Potential of Safe, Secure and Trustworthy Artificial Intelligence Systems for Sustainable Development” [1] confirms (paragraph 5) that"human rights and fundamental freedoms must be respected, protected and encouraged throughout the life cycle of artificial intelligence systems"and to all Member States of the United Nations and, where appropriat Read more ›
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When we go abroad for vacation or meet a foreigner on the street who doesn’t speak Russian but is trying to ask, “Where is the restroom? How do I get to…”, we wonder how to explain things to them in Russian in a way they would understand. I asked myself a similar question when trying to explain something to a colleague using SQL while they were working with Java. The... Read more ›
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Napkin AI is an innovative artificial intelligence tool that transforms text descriptions into visual sketches and diagrams. Launched in 2023, this tool allows users to quickly convert their ideas into visual representations, similar to drawing on a napkin – hence the name. In this tutorial, I will walk you through its top features and provide a video demonstration. Read more Read more ›
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In today's interconnected development world, secure authentication is not just a luxury—it's a necessity. Whether you're a seasoned DevOps engineer or a junior developer just starting your journey, understanding SSH key pairs is crucial for your daily workflow. They're the unsung heroes that keep our git pushes secure, our server access protected, and our deployments safe from prying eyes.But let's be honest: SSH keys can be confusing. With terms like... Read more ›
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