The First Text Match block is used to get the result of the first match of a text against a regular expression.
A regular expression or regex is a sequence of characters that specifies a search pattern in text. If the text matches the regex to be checked, it returns the first result.
Example A:
Using the input Expression 'gr[ae]y' for input Text 'red grey blue gray' the text 'grey' is returned.
Example B:
Using the input Expression 'gr[ae]y' for input Text 'red green blue gray' the text 'gray' is returned.
Result:
Text that first matches the regular expression.
Tips and best practices:
List of regular expression examples:
| Regex | Matches any string that |
| hello | contains {hello} |
gray|grey |
contains {gray, grey} |
gr(a|e)y |
contains {gray, grey} |
gr[ae]y |
contains {gray, grey} |
b[aeiou]bble |
contains {babble, bebble, bibble, bobble, bubble} |
[b-chm-pP]at|ot |
contains {bat, cat, hat, mat, nat, oat, pat, Pat, ot} |
colou?r |
contains {color, colour} |
rege(x(es)?|xps?) |
contains {regex, regexes, regexp, regexps} |
go*gle |
contains {ggle, gogle, google, gooogle, goooogle, ...} |
go+gle |
contains {gogle, google, gooogle, goooogle, ...} |
g(oog)+le |
contains {google, googoogle, googoogoogle, googoogoogoogle, ...} |
z{3} |
contains {zzz} |
z{3,6} |
contains {zzz, zzzz, zzzzz, zzzzzz} |
z{3,} |
contains {zzz, zzzz, zzzzz, zzzzzz} |
z{3,} |
contains {zzz, zzzz, zzzzz, ...} |
\d |
contains {0,1,2,3,4,5,6,7,8,9} |
\d{5}(-\d{4})? |
contains a United States zip code |
1\d{10} |
contains an 11-digit string starting with a 1 |
[2-9]|[12]\d|3[0-6] |
contains an integer in the range 2..36 inclusive |
^cat |
begins with "cat" |
cat$ |
ends with "cat" |
^cat$ |
is exactly "cat" |
Library:
Text