regular expression
[/ˈreɡjələr ɪkˈspreʃən/]
nounpl: regular expressions
expressão regular
1. A sequence of characters that define a search pattern, typically used to find, match, or replace strings in text processing and programming
The regular expression '^[a-z]+@[a-z]+\.[a-z]{2,}$' validates email addresses.
A expressão regular '^[a-z]+@[a-z]+\.[a-z]{2,}$' valida endereços de email.
2. A formal language used in computer science and text processing that allows pattern matching through special symbols and metacharacters
Developers use regular expressions in grep, sed, and programming languages like Python and JavaScript.
Desenvolvedores usam expressões regulares em grep, sed e linguagens de programação como Python e JavaScript.
Regular expressions are fundamental in computer science education and professional software development across Brazil and the USA. The term 'regex' is widely understood in both countries' tech communities. In Brazil, the full term 'expressão regular' is preferred in formal documentation, while 'regex' is common in casual developer conversations. This is a domain-specific technical term with no significant cultural variation between regions.
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