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String Manipulation???

Posted on 2008-10-15
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Last Modified: 2013-12-24
Hi,

How can I strip off some characters from the end of a string?  I am not very good at regular expressions but perhaps I may not need one?  Here is the data

first_name_510
last_name_2267

I need a function that will strip off everything from the right including the underscore.  I should be left with the below:

first_name
last_name

Any help highly appreciated

-ws
0
Comment
Question by:Westside2004
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14 Comments
 
LVL 17

Expert Comment

by:HuyBD
ID: 22718665
try this
#REReplace(name,"_[0-9]*","")#

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0
 
LVL 1

Author Comment

by:Westside2004
ID: 22718776
Hi,

Close somewhat, it left me with:

FirstName_5

As opposed to just: First_Name

It looks like it removed the first underscore as opposed stripping everything from the right up to and including the underscore

To reiterate:

First_Name_523

would become

First_Name

Any help appreciated :)

-ws

0
 
LVL 1

Expert Comment

by:Georg
ID: 22718883
Hello,

try this:

<cfset str1="first_name_510">
<cfset str2="last_name_2267">

<cfset newstr1="#Left(str1, (Len(str1)-( Find("_", Reverse(str1), 1) )))#">
<cfset newstr2="#Left(str2, (Len(str2)-( Find("_", Reverse(str2), 1) )))#">

the output of newstr1 and newstr2 is:
first_name
last_name

Georg

0
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LVL 17

Expert Comment

by:HuyBD
ID: 22719149
sorry
<cfset name=REReplace(name,"[0-9]*","","ALL")>
<cfset name=left(name,len(name)-1)>

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0
 
LVL 63

Accepted Solution

by:
Zvonko earned 1200 total points
ID: 22719380
Here my proposal:
<cfset fname="first_name_510" >
<cfset lname="last_name_2267" >
 
 
<cfset fname=rereplace(fname,"_\d+$","") >
<cfset lname=rereplace(lname,"_\d+$","") >
 
<cfoutput>
#fname# #lname#
</cfoutput>

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0
 
LVL 36

Expert Comment

by:SidFishes
ID: 22721172
an alternative in a single line using list functions

<cfset str = "first_name_510">

<cfset strOut = replace(str, "_"  & evaluate(listlast(str,"_")),"")>


<cfoutput>#strOut#</cfoutput>
0
 
LVL 36

Assisted Solution

by:SidFishes
SidFishes earned 400 total points
ID: 22721202
oops you don't even need the evaluate

<cfset strOut = replace(str, "_"  & listlast(str,"_"),"")>
0
 
LVL 8

Assisted Solution

by:eszaq
eszaq earned 400 total points
ID: 22736609
You should use regular expressions. ReReplace() function, not Replace(). And make sure you address end of string with dollar sign:
<cfset fname=rereplace(fname,"_\d+$","")>
Do the same for last name.
0
 
LVL 8

Expert Comment

by:eszaq
ID: 22736636
Same effect using list functions:
#ListDeleteAt("last_name_2267", ListLen("last_name_2267", "_"), "_")#
0
 
LVL 63

Expert Comment

by:Zvonko
ID: 22738229
@eszaq: "You should use regular expressions."
You should read the thread before posting: http:#22719380
0
 
LVL 1

Author Comment

by:Westside2004
ID: 22751048
Thanks for all the responses here.  I will test this out tonight and post back shortly.

Thanks,

-ws
0
 
LVL 1

Author Closing Comment

by:Westside2004
ID: 31506208
Great answers!.  Thanks, one thing, how can you remember the syntax for these regular expressions?  They seem powerful but how do you know which characters to use?
0
 
LVL 1

Author Comment

by:Westside2004
ID: 22751094
Thanks for the help! One thing though, how can you remember the syntax for these regular expressions?  They seem powerful but how do you know which characters to use?

-ws
0
 
LVL 63

Expert Comment

by:Zvonko
ID: 22751380
0

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