In a route pattern, which symbol denotes a variable length wildcard?

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Multiple Choice

In a route pattern, which symbol denotes a variable length wildcard?

Explanation:
In a route pattern, the exclamation mark acts as the variable-length wildcard, letting you match any number of digits after a given prefix. For example, a pattern like 9! will match 9, 91, 912, 9123, and so on, giving flexibility for numbers of different lengths. The other symbols aren’t used here to denote a variable-length wildcard, so they don’t provide the same flexible tail-matching capability.

In a route pattern, the exclamation mark acts as the variable-length wildcard, letting you match any number of digits after a given prefix. For example, a pattern like 9! will match 9, 91, 912, 9123, and so on, giving flexibility for numbers of different lengths. The other symbols aren’t used here to denote a variable-length wildcard, so they don’t provide the same flexible tail-matching capability.

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