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Common

Collection​

Circular Dependency​

Crontab​

Emoji​

Apps for emojis:

Float Precision​

License​

Regular Expression​

  • i Hate Regex

    i Hate Regex is a regex cheat sheet that also explains the commonly used expressions so that you understand it. Stop hating and start learning.

  • Regex101

    Online regex tester, debugger with highlighting for PHP, PCRE, Python, Golang and JavaScript.

  • RegEx Pal

    Test your Javascript and PCRE regular expressions online.

  • RegExr

    Regular expression tester with syntax highlighting, PHP / PCRE & JS Support, contextual help, cheat sheet, reference, and searchable community patterns.

Replacement Character �​

U+FFFD � REPLACEMENT CHARACTER used to replace an unknown, unrecognized or unrepresentable character.

Reproduction

node@12.2.0
:

// node
new Buffer.from(
  new Buffer.from([...new Buffer.from('😄')].slice(1)).toString()
);
// <Buffer ef bf bd ef bf bd ef bf bd>

Roadmap​

Roadmaps to becoming a modern developer

https://roadmap.sh/

SaaS​

Software as a Service

Symbols​

Unicode​

Version​