RegExr
regular expressions 101
rubular
Expresso
RegEx Generator
Regex Crossword
i Hate Regex
RegexPlanet Ruby
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RegExr EthereumEthereum is recommended for developers looking to create decentralized applications, investors interested in diversified blockchain technologies, and businesses seeking innovative solutions in the finance, gaming, and supply chain sectors.
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However - here it becomes weird - when testing the original regex rule (the first one, without the \u00A0 part) on the same string in an interactive visualiser (https://regexr.com/ for instance), there is a match:. - Source: dev.to / 8 months ago
Learned regex in the 90's from the Perl documentation, or possibly one of the oreilly perl references. That was a time where printed language references were more convenient than searching the internet. Perl still includes a shell component for accessing it's documentation, that was invaluable in those ancient times. Perl's regex documentation is rather fantastic. `perldoc perlre` from your terminal. Or... - Source: Hacker News / 10 months ago
I read a lot on https://www.regular-expressions.info and experimented on https://rubular.com since I was also learning Ruby at the time. https://regexr.com is another good tool that breaks down your regex and matches. One of the things I remember being difficult at the beginning was the subtle differences between implementations, like `^` meaning "beginning of line" in Ruby (and others) but meaning "beginning of... - Source: Hacker News / 10 months ago
Mostly building things that needed complex RegEx, and debugging my regular expressions with https://regexr.com/. - Source: Hacker News / 10 months ago
For username: You are using the min() function to make sure the characters are not below three and, then the max() function checks that the characters are not beyond twenty-five. You also make use of Regex to make sure the username must contain only letters, numbers, and underscore. - Source: dev.to / 11 months ago
This post takes a deep dive into the evolving realm of blockchain scalability. It explores both layer-one and layer-two solutions, next-generation innovations, as well as emerging techniques that enhance transaction speed and efficiency. We cover topics ranging from sharding and consensus algorithm improvements to state channels and rollups. In addition, this post provides background context, practical... - Source: dev.to / about 1 month ago
Blockchain is essentially a decentralized digital ledger which records transactions on multiple computers so that the record cannot be altered retroactively. Originally popularized by cryptocurrencies like Bitcoin and Ethereum, blockchain has evolved into a technology that ensures data integrity, transparency, and enhanced security. For those new to this topic, a deep dive on the basics can be found at what is... - Source: dev.to / about 1 month ago
As the DeFi and NFT ecosystems expand, so does the adoption of Layer 2 solutions. The Arbitrum sequencer is expected to see broader adoption, with more dApps migrating to its scalable network. Works like those by Ethereum illustrate the growing enthusiasm for such technologies. - Source: dev.to / about 1 month ago
This post explores how Decentraland—a decentralized virtual world built on the Ethereum blockchain—is revolutionizing cybersecurity training through immersive cyberwar simulations. We discuss the background and context of blockchain-powered virtual environments, detail the core simulation concepts like offensive "red teams" and defensive "blue teams," provide real-world applications and use cases, examine... - Source: dev.to / 2 months ago
The NFT arena has exploded in popularity since its debut, providing a platform for artists and innovators to offer tangible proof of digital authenticity. NFTs allow the uniqueness of each digital asset to be verified on a blockchain, making them highly sought after by collectors and enthusiasts alike. The recent entry of Trump-themed NFTs into this space marks another milestone as it taps into a politically... - Source: dev.to / 3 months ago
regular expressions 101 - Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
Bitcoin - Bitcoin is an innovative payment network and a new kind of money.
rubular - A ruby based regular expression editor
Litecoin - Litecoin is a peer-to-peer Internet currency that enables instant payments to anyone in the world.
Expresso - The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer with an extensive knowledge of regular expressions.
Monero - Monero is a secure, private, untraceable currency. It is open-source and freely available to all.
