How to parse data from a string, specifically how do I find the index of the first character that's a number?

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Mike Schmitt — Tue, 22 Feb 2022 15:53:25 GMT

[quote userid="85715" url="~/discussions/f/data/23781/how-to-parse-data-from-a-string-specifically-how-do-i-find-the-index-of-the-first-character-that-s-a-number/91401#91401"]get the number itself[/quote]

Oh - I was thinking of the OP's question which was, "What I'm wondering is how do I get the index of the first character that's a number?", which is what the above is.

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Richard Michaelis — Tue, 22 Feb 2022 15:51:46 GMT

hahahaha made my day.
but the target was to get the number itself, if I got it right?

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Mike Schmitt — Tue, 22 Feb 2022 15:06:15 GMT

Seems correct to me (?)

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Joe Spain — Tue, 22 Feb 2022 15:01:12 GMT

Thanks! This is the one I went with. Works great, I appreciate the help!

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Richard Michaelis — Tue, 22 Feb 2022 14:44:43 GMT

try this for string

a!localVariables(
  local!string:"Advil XX MG/ML Oral Suspension",
  stripwith(tostring(regexallmatches("[0-9]",local!string)), "; ")
)

This one if you want to archive an integer output:

a!localVariables(
  local!string:"Advil XX MG/ML 20 Oral Suspension",
  tointeger(tostring(regexallmatches("[0-9]",local!string)))
)

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Richard Michaelis — Tue, 22 Feb 2022 14:40:35 GMT

I got 7 as result?

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

GopalK — Tue, 22 Feb 2022 14:34:27 GMT

Yes, In that case null check can be applied,

a!localVariables(
  local!string: "Advil xx MG/ML Oral Suspension",
  if(
    a!isNullOrEmpty(regexfirstmatch("[0-9]", local!string)),
    "",
    find(
      regexfirstmatch("[0-9]", local!string),
      local!string
    )
  )
)

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Stewart Burchell — Tue, 22 Feb 2022 14:27:58 GMT

Neater...but if the string contains no numbers it throws an error:

a!localVariables(
  local!string:"Advil XX MG/ML Oral Suspension",
  find(regexfirstmatch("[0-9]",local!string),local!string)

)

...results in:

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

GopalK — Tue, 22 Feb 2022 14:25:20 GMT

Hi, You can try below code as well.

a!localVariables(
  local!string:"Advil 20 MG/ML Oral Suspension",
  find(regexfirstmatch("[0-9]",local!string),local!string)
  
)

RE: How to parse data from a string, specifically how do I find the index of the first character that's a number?

Stewart Burchell — Tue, 22 Feb 2022 14:01:38 GMT

I'm sure there are more elegant ways, but you can use the following fragment to return a list of indices for every possible numeric value:

fn!wherecontains(
  {"0","1","2","3","4","5","6","7","8","9"},
  fn!char(fn!code("Advil 20 MG/ML Oral Suspension"))
)

If the returned array is empty, then your string contains no numerics, otherwise the first item in the array is the index of the first number.