Regexp function to extract numbers

RE: Regexp function to extract numbers

claraf0002 — Fri, 28 May 2021 12:31:51 GMT

How about if I want to return a 7digit value , but i do not know the exact value?

RE: Regexp function to extract numbers

PhilB — Thu, 15 Feb 2018 13:41:07 GMT

A lot of these examples appear to show a fundamental misunderstanding of regex. If you'd like to do this using regex, you can use:

fn!regexallmatches(
  "[0-9]+",
  "ABC 123"
)

Note that you'll have to choose between fn!regexallmatches and fn!regexfirstmatch depending on your data; the former returns a list of matches and the latter returns only the first match.

If you'd like to see and/or test regexes, this tool is an excellent option and (as per the link) allows you to share and test regexes.

RE: Regexp function to extract numbers

Amit Mishra — Thu, 15 Feb 2018 13:30:54 GMT

Regexp will not work if you are not looking for a specific pattern. If a specific pattern then yes, use Regexp.
There are many way to find integer value, as suggested by others. You can also try comparing with index of each element of your string/array. Choice should yours but based on your code performance. Thanks

RE: Regexp function to extract numbers

swarajd0001 — Fri, 02 Feb 2018 12:10:11 GMT

In appian ,if you take a text field in interface,number integer as rule input . then you will get only numeric values from String .

RE: Regexp function to extract numbers

jayakumars — Fri, 12 Jan 2018 21:26:09 GMT

This is a clever solution. Thanks!

RE: Regexp function to extract numbers

aloks0189 — Wed, 20 Dec 2017 21:22:34 GMT

Hi bpmnewb i believe cleanwith(..., ....) function is the best option here for your case, because of following reasons:

1. When you use tointeger(...) text will be converted to their respective Integer, but when you have some special characters, it will return null as it's response. For example: tointeger("a.@1apllr2-_3,,.../ab") -> Returns -> null

2. When you go for regexallmatches() you have similar kind of issues and in order to resolve that, you need to make the use of wildcard characters/escape sequence syntax. Below code snippet show the problem with regexallmatches()

load(
local!string:"a.@1apllr2-_3,,.../ab",
regexallmatches(
"1234567890",
local!string
)
)

Hence i recommend better to go for cleanwith(..., ....)

Hope it will help you to choose the best option for your scenario.

RE: Regexp function to extract numbers

shwetap — Wed, 20 Dec 2017 09:17:38 GMT

hey Rohita187,
you can try this.
load(
local!numbers:regexallmatches("[0-9]","asd12"),
{
local!value:concat(local!numbers)
}

)
thanks,
shweta p.

RE: Regexp function to extract numbers

Mainak Chanda — Wed, 20 Dec 2017 09:09:58 GMT

It can also be done using the Regex function:

load(
local!string:"ABC 123",
regexallmatches(
"123",
local!string
)
)

But Regex function is mainly used for complex patterns where pattern may include characters , numbers and even special characters.

RE: Regexp function to extract numbers

amanit — Wed, 20 Dec 2017 06:00:18 GMT

You can try using Appian inbuilt function cleanwith(ri!targetText, "1234567890"), which strips out alphabets and returns only numbers in return.

RE: Regexp function to extract numbers

Jayapriya Muthu — Wed, 20 Dec 2017 05:54:56 GMT

Hi,
tointeger() function will try to convert the string to integer and it will strips the non-digits
ex. tointeger("ABC 123") will return output as 123 as you asked.