Match () with regex () ()

(match [foo bar] with regex [foo] [g] :: operators)

Information

The match regex block is a reporter block that matches a string with a regular expression, a regex.

Use

This block searches for every instance of the selected rule. The rule can be inserted into the second input box. The third input box acts as a flag (more info later on)

Examples

Foo bar example

(match [foo bar] with regex [foo] [g] :: operators) // ["foo"]

In this example inputs of the block it searches for the string "foo" in the string "foo bar" which will result in the array ["foo"] since there is only one foo in the string.

Fruit example

(match [banana orange apple banana banana pear apple] with regex [banana] [g] :: operators) // ["banana","banana","banana"]

For this example the block searches for every occurance of the word "banana" which results in the array ["banana","banana","banana"].

Regular expression syntax

The rules of regular expressions have their own syntax which you can all look up on this website.

The examples will appear as: [to be matched string] [rule] [flag] -> [result]

Syntax Table

meta characters	Description	Example
.	This is the syntax for (almost) any character (see flags)	["gray grey griy gary"] ["gr.y"] ["g"] -> ["gray", "grey", "griy"]
()	groups a set of characters	No actual change to the result, will be needed later on
+	matches the preceding character or group one or more times	["abbbbbba aba aa"] ["ab+a"] ["g"] -> ["abbbbbba","aba"]
?	matches the preceding character or group zero or one times	["aba aa abba abbbba"] ["a?ba"] ["g"] -> ["aba","aa"]
*	matches the preceding character or group any amount of times	["aba aa abbbbbbbba abbbbbbbbbbbbba"] ["ab*a"] ["g"] -> ["aba", "aa", "abbbbbbbba", "abbbbbbbbbbbbba"]
{M,N}	matches the preceding character or group a minimum of M to a naximum of N times	["aba abbba abbbbba abbbbbbbbbbba"] ["ab{3,5}a"] ["g"] -> ["abbba","abbbbba"]
{,N}	matches the preceding character or group a maximum of N times	["aba abbba abbbbba abbbbbbbbbbba"] ["ab{,5}a"] ["g"] -> ["aba", "abbba", "abbbbba"]
{M,}	matches the preceding character or group a minimum of M times	["aba abbba abbbbba abbbbbbbbbbba"] ["ab{3,}a"] ["g"] -> ["abbba", "abbbbba", "abbbbbbbbbbba"]
{N}	matches the preceding character or group exactly N times	["aba abbba abbbbba abbbbbbbbbbba"] ["ab{3}a"] ["g"] -> ["abbba"]
[...]	syntax for any characters or group within the rectangular parenthesis	["Hello Hallo Hmllo Hkllo"] ["H[ea]llo"] ["g"] -> ["Hello","Hallo"]. This can also used like this: ["Hello Hallo Hmllo Hkllo"] ["H[a-k]llo"] ["g] -> ["Hello","Hallo", "Hkllo"]. which acts as every letter in the alphabet from a to k
|	seperating possible character or groups	["gray grey griy gary"] ["(gray|grey|griy)"] ["g"] -> ["gray", "grey", "griy"]
\w	syntax for all Alphanumericals (a-z A-Z 0-9 and _)	["This is a_text90§!"] ["\w"] ["g"] -> ["T","h","i","s","i","s","a","_","t","e","x","t","9","0"]
\W	syntax for all non-Alphanumericals not (a-z A-Z 0-9 and _)	["This is a_text90§!"] ["\W"] ["g"] -> ["§","!"]
\s	syntax for the Whitespace which includes: Ascii: tab, space, line feed, form feed and carriage return Unicode: matches, no-break spaces, next line, and the variable-width spaces (amongst others). Basically anything that is not visible	["This is a testing example"] ["\s"] ["g"] -> [" "," "," "]
\S	syntax for all non-Whitespaces	["This is a tesing example"] ["\S"] ["g"] -> ["T","h","i","s","i","s","a","t","e","s","t","i","n","g","e","x","a"m","p","l","e"]
\d	syntax for all Digits (0-9)	["My favourite number is 917"] ["\d"] ["g"] -> ["9","1","7"]
\D	syntax for all non-Digits not (0-9)	["9 + 10 = 21"] ["\D"] ["g"] -> ["+","="]
^	syntax for the beginning of a string or line	["Hello World, I say Hello"] ["^Hello"] ["g"] -> ["Hello"]
$	syntax for the end of a string or line	["Hello World, I say Hello"] ["Hello$"] ["g"] -> ["Hello"]
\A	syntax for the beginning of a string but not line	["Hello World, Hello"] ["\A"] ["g"] -> ["Hello"]
\z	syntax for the end of a string but not line	["Hello World, Hello"] ["\z"] ["g"] -> ["Hello"]
[^...]	syntax for any character or group not inside of the rectangular parenthesis	["Hello Hallo Hmllo Hkllo"] ["H[^ea]llo"] ["g"] -> ["Hmllo","Hkllo"]. This can also used like this: ["Hello Hallo Hmllo Hkllo"] ["H[^a-k]llo"] ["g] -> ["Hmllo"]. which acts as every letter but those in the alphabet from a to k
\	syntax for Escaping Characters. For example used to get the actual character * instead of the syntax	["I would like to find all *s in this very *-filled *text"] ["\*"] ["g"] -> ["*","*","*"] This is also used to escape itself: ["I would like to find all \s in this very \-filled \text"] ["\\"] ["g"] -> ["\","\","\"]

Flags

Flags are used to redefine the behaviour of a regular expression. These flags include:

Flags

Flag	Name*	Description
g	Global	Finds all the matching sub-strings not only the first one
i	Case-insensitive	Makes the rule case-insensitive. For example if the rule is [e] and the flag [ig] all e and E's get matched
m	Multi-line	Changes the meanings of ^ and $ to make them match the beginning and end of each line, rather than the whole string.
s	"Dotall"	changes the . character to include every character including new-line

To use multiple flags you write them, as seen in the description of the case-insensitive flag, after another with no delimiter (a space or comma inbetween the flags). Order does not matter.

More flags can be found at MDN.