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Matches any unsigned floating point number/numeric string. Also matches empty strings.

Matches any floating point numer/numeric string, including optional sign character (+ or -). Also matches empty strings.

This matches floating point expression in a more rigorous way - accepts both exponent as well as non exponent notations.

matches non-negative decimal floating points numbers less than 10

This regular expression will match on a real / decimal / floating point / numeric string with no more than 2 digits past the decimal. The negative sign (-) is allowed. No leading zeroes or commas. It is based on a currency regular expression by Tom Persing.

will match free floating valid protocol + urls in text ... will not touch the ones wrapped in a tag, so that you can auto-link the ones that aren't :) couple of things to know : 1. if the url is next to a tag this won't work (eg : <br>http://www.acme.com), the url must either start with a \s, \n or any character other than >. 2. the pattern will match the preceding \s and \n too, so when you replace put them back in place $1 will either be \s or \n, $2 will be the exact match vb usage : set re = New RegExp re.Pattern ="(\s|\n|^)(\w+://[^\s\n]+)" strResult = re.Replace(strText, "$1<a href='$2' target='_new'>$2</a>")

Matches all positive & negative decimal floating point numbers, to any magnitude. Allows empty string.

Matches all positive decimal floating negative/non-negative numbers. Allows empty string.

Simple checker for user's float types input.

Matches any unsigned floating point number/numeric string.

A regular expression which allows me to find strings of text floating around in free text that are in fact URLs. I need to tag these as <url>www.bmj.com/advice</url>. The problem has been allowing special characters in the url, but not mixing them up with genuine punctuation marks at the end of the url in the text-e.g. '.' or '?' or ) or ';' etc)

Matches any unsigned or signed floating point number/numeric string.

SqlServer seems to throw an error when using higher than e308 for e-309 it just makes the value = 0. Either way, this regexp seems to work for me. and allows for empty string as well. To negate the empty string pass through in asp.net just add a required field validator--if your already program asp.net you probably already know that though : ) .

DESCRIPTION Parses a complex number of kind 'a+bi' from an input string. Please remove all spaces from the input string before using this regex pattern. MATCHING EXAMPLES '[]' means is an optional parameter; '|' means OR; '+' is the positive sign; '-' is the negative sign; '#' is one ore more decimal digits; 'E|e' are the valid exponent symbols; '...' is the range for the exponent; 'r' means the real part of complex number; 'i' means the imaginary part of complex number. NOTE Has the imaginary part of the input string not a numeric value (e.g. '5-i' is a valid format) it should be interpreted as '5-1i'!

This is the same regex pattern as 'Floating Complex Number' but extented by group names. This makes it much easier to extract the parts of the complex number (e.g. string realPart=myMatch.Result("${r}");string imgPart=myMatch.Result("${i}"); ).

DESCRIPTION Parses a floating number (such as double or float) from an input string. Please remove all spaces from the input string before using this regex pattern. MATCHING EXAMPLES The following symbols are used: '[]' means optional parameter; '|' means OR; '+' is the positive sign; '-' is the negative sign; '#' means one or more decimal digits; '.' is decimal seperator.

DESCRIPTION Parses a floating number with an optional exponent from an input string. Please remove all spaces from the input string before using this regex pattern. MATCHING EXAMPLES The following symbols are used: '[]' means an optional parameter; '|' means OR; '+' means the positive sign; '-' means the negative sign; '#' means one or more numbers (0...9); '.' is the decimal seperator; 'E|e' are the valid exponent symbols; '...' is the range of values for the exponent.

This regex is designed to fail fast (using possessive quantifiers) while still matching a floating decimal number all the time. Won't match scientific notation or fractions. Can be combined with other patterns. Note: This site's tester does not support them. If your language does not support possessive quantifiers try the following: (?>[+-]?)(?>(?>\d+)(?>\.?)(?>\d*)|(?>\d*)(?>\.?)(?>\d+))

This regular expression will match on a real / decimal / floating point / numeric string with no more than 2 digits past the decimal. The negative sign (-) is allowed. No leading zeroes or commas. It is based on a currency regular expression by Tom Persing.

Tokenize a Javascript document for parsing each token is a language-token : string, int, float, comment, multiline comment, operator, expression etc. etc.