regular expression

1. A concise description of a regular formal language with notations for concatenation, alternation, and iteration (repetition) of subexpressions.

   regulärer Ausdruck, RegExp, Regex

   регуля́рное выраже́ниеreguljárnoje vyražénije, регэ́кспrɛgɛ́ksp, реге́ксrɛgɛ́ks

2. (broadly)Any pattern for text matching or searching, frequently offering more or less functionality than a theoretical regular expression.

1. How is whitespace represented in regular expressions?

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2. What's the meaning of an asterisk in a regular expression?

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3. It would be true, if zero or more characters at the beginning of the string would match this regular expression.

   ruЭто было бы истиной, если бы от нуля и более символов в начале строки соответствовало этому регулярному выражению.

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4. How is Null expressed as a regular expression?

   deWie drückt man null durch einen regulären Ausdruck aus?

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regular