RegEx’dagi metabelgilar
Metabelgilar
Metabelgilar — maxsus ma’noga ega belgilar:
| Belgi | Tavsif | Misol | Sinab ko‘ring |
|---|---|---|---|
| [] | Belgilar to‘plami | "[a-m]" | Sinab ko‘ring » |
| \ | Maxsus ketma-ketlikni bildiradi (maxsus belgilarni escape qilish uchun ham ishlatilishi mumkin) | "\d" | Sinab ko‘ring » |
| . | Istalgan belgi (yangi qator belgisidan tashqari) | "he..o" | Sinab ko‘ring » |
| ^ | Shu bilan boshlanadi | "^hello" | Sinab ko‘ring » |
| $ | Shu bilan tugaydi | "planet$" | Sinab ko‘ring » |
| * | Nol yoki undan ko‘p marta takrorlanish | "he.*o" | Sinab ko‘ring » |
| + | Bir yoki undan ko‘p marta takrorlanish | "he.+o" | Sinab ko‘ring » |
| ? | Nol yoki bir marta takrorlanish | "he.?o" | Sinab ko‘ring » |
| {} | Aynan belgilangan marta takrorlanish | "he.{2}o" | Sinab ko‘ring » |
| | | Yoki u, yoki bu | "falls|stays" | Sinab ko‘ring » |
| () | Ushlash va guruhlash |
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