Generate string

Generates a random string

Evaluation

This expression evaluates to a function of the form:

(seed) -> any

The function is consistent with generator semantics of the Random Data step.

Given a seed value, the function returns a pseudo-random string value that matches a given regular expression.

Pattern	Description
`.`	Any symbol
`?`	One or zero occurrences
`+`	One or more occurrences
`*`	Zero or more occurrences
`\d`	A digit. Equivalent to `[0-9]`
`\D`	Not a digit. Equivalent to `[^0-9]`
`\s`	Any whitespace character: carriage return, space, tab, newline, vertical tab, form feed
`\S`	Anything but a whitespace character
`\w`	Any word character. Equivalent to `[a-zA-Z0-9_]`
`\W`	Anything but a word character. Equivalent to `[^a-zA-Z0-9_]`
`\i`	Places same value as capture group with index `i`, `i` is any integer number.
`\xXX` and `\x{XXXX}`	Hexadecimal value of unicode characters 2 or 4 digits
`{a}` and `{a,b}`	Repeat a; or min a max b times.
`[...]`	Single character chosen from characters inside brackets. Use the dash to specify ranges i.e: `[a-zA-Z]`
`(a\|b)`	Alternatives
`[^...]`	Single character not in brackets. For example: `[^a-z]` - any symbol except lowercase letters
`()`	Group multiple characters for repetitions or alternatives
`\`	Escape character - use to treat characters with special meaning as literals `\.` to generate a dot character `\[` to generate an opening bracket `\\`to generate a literal `\` character etc.

Name Type Description

string

Regular expression specifying the format of the generated string.

Examples:

double

Probability in range of 0.0 to 1.0 that the generator will return nil instead of generating a value.