xlate help and pattern matching

[Femina Jaffer]

Can anyone help me with the following issue:

I need to check if the mrn is 8 characters, and the first 4 digits are all  alpha and the last 4 digits are all numeric?  Can anyone help me with this, please?

Thanks.

Femina

Topic

[Charlie Bursell]

set var ABCD1234

if {[regexp — {^w{4}d{4}$} $var]} {

        echo var has 4 characters followed bt 4 digits

}

[Femina Jaffer]

Thank you Charlie!  This really helped.  I was breaking this up in two parts.  Also, thank you Jim K.

Femina

[Femina Jaffer]

Charlie,

I am still not getting this to work.  I have an example:

set var 12345678

if {[regexp — {^w{4}d{4}$} $var]} {

       echo var has 4 characters followed bt 4 digits

}

This still evaluates to true.  It should not pass as it does not meet the condition.

Please advise.

Femina

[David Barr]

I think that w can match letters or numbers, so you need to do something like this:

set var 12345678

if {[regexp — {^[A-Za-z]{4}d{4}$} $var]} {

      echo var has 4 characters followed bt 4 digits

}

[Charlie Bursell]

My bad, David is correct w will match all alphanumerics.  Sorry about that.

Next time I guess I need to test it better  😀

[Femina Jaffer]

That worked – thanks guys!

[Author]

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