DecimalsRangeRegexpGenerator

Min (optional):

Min excluded:

Max (optional):

Max excluded:

Step (optional, it will default to arbitrary precision and not 1):

Efficient for a step that is a power of your base (default: 10). Otherwise experimental, since the general algorithm I use generates regular expressions that becomes too big most of the time. Try 111 = 7 in base 01, or 5 or 0.5 in base 0123456789 for an example where it works without being excessively long. Try 0.25 in base 0123456789 for an example where the current algorithm is too dumb to compute a short regular expression.

Allow leading zeros:

Allow trailing zeros:

Min number of digits before decimal separator:

Max number of digits before decimal separator:

Min number of digits after decimal separator:

Max number of digits after decimal separator:

Do not apply min number of digits after decimal part if there is no decimal part:

Min number of digits before or after decimal separator:

Max number of digits before or after decimal separator:

Allow zero to be written with a minus sign:

Allow zero to be written with a plus sign:

Allow numbers above zero to be written with a plus sign:

Digits:

A string that defaults to "0123456789"; you may use "01" (base 2) or "0123456789abcdef" (base 16) for example, or even "five" for base four ;). ("f" would be your zero, "i" your unit, etc.)

Decimal separators:

A string that defaults to "."; you may use "," or ".," for example.

Plus signs:

A string that defaults to "+"; you may use "p" for example, or "pl" if you would like to use "p" or "l" as you wish.

Minus signs:

A string that defaults to "-"; you may use "m" for example, or "mn" if you would like to use "m" or "n" as you wish.

Spaces characters before a sign character:

Min number of spaces before a sign character:

Max number of spaces before a sign character:

Spaces characters before a number without sign:

Min number of spaces before a number without sign:

Max number of spaces before a number without sign:

Spaces characters between a sign and number:

You may try exactly one non-breakable space here, for example.

Min number of spaces between a sign and number:

Max number of spaces between a sign and number:

Spaces characters after_last_digit:

Min number of spaces after last digit:

Max number of spaces after last digit:

Spaces characters between digits before decimal separator:

Min number of spaces between digits before decimal separator:

Max number of spaces between digits before decimal separator:

Spaces characters between digit and decimal separator:

Min number of spaces between digit and decimal separator:

Max number of spaces between digit and decimal separator:

Spaces characters between decimal separator and digit:

Min number of spaces between decimal separator and digit:

Max number of spaces between decimal separator and digit:

Spaces characters between digits after decimal separator:

Min number of spaces between digits after decimal separator:

Max number of spaces between digits after decimal separator:

Min number of contiguous digits:

Max number of contiguous digits:

With both min and max at 3, you can have spacing like thousands separators.

Enclose groups in regular expression with: "(" for simple capturing group (shorter regular expression) "(?:" for non-capturing group (faster and use less memory)

The generated regular expressions sometimes need to use groups, that are not positive or negative look-ahead or look-behind. It is used either for alternatives or repetitions. In that case, one may freely choose to use simple capturing group or non-capturing group.

Allow leading decimal separator (without any digit before):

You do not need it, you can use "Min number of digits before decimal separator" = 0 or empty and a max is given. Note that when no min and no max are given, it defaults to "+" or "{1,}" that disallow leading decimal separator. Because "+" is the most sensible choice for most use cases.

Allow trailing decimal separator (without any digit after):

You do not need it, you can use "Min number of digits after decimal separator" = 0 or empty and a max is given. Note that when no min and no max are given, it defaults to "+" or "{1,}" that disallow trailing decimal separator. Because "+" is the most sensible choice for most use cases. If you want to make sure that no trailing decimal separator is allowed, while specifying a max number of digits after decimal use "Min number of digits after decimal separator" = 1 with or without "Do not apply min number of digits after decimal part if there is no decimal part".