extracting characters from a string

[Manny Zachodin]

I am using in xlate a statement to extract the last 2 characters from a 15 bytes long string by typing TCL code directly in a box “string trimleft mystring 13″. Whatever I do I get back the same long string of 15 bytes. I tried also with ‘trimright” function with no success.  The function ‘tolower’ and toupper” are functioning correctly.  Thanks for your help.

Topic

[Manny Zachodin]

used string range function and it worked for me…still wandering why trimleft did not work…but never mind.  Thanks.

[Max Drown (Infor)]

string trimleft string chars

If chars is blank, then trimleft defaults to whistespace.

Example:

set line1 ”    000011112222″ ;# leading spaces

set line2 [string trimleft $line1] ;# defaults to whitespace

Result: “000011112222”

Example:

set line1 “aaaabbbbcccddd”

set line2 [string trimleft $line1 a] ;# removes leading “a” characters

Result: “bbbbcccddd”

-- Max Drown (Infor)

[Jim Kosloskey]

Manny,

String trim is for removing leading and/or trailing characters of a certain content (such as zeros, spaces, etc.) not for a number of characters.

As you determined, string range allows you to pick a certain number of characters regardless of their content.

Jim Kosloskey

email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.

[Manny Zachodin]

Thank you both for your educated input.

[Charlie Bursell]

Using the wrong command I guess as you know by now.  🙂

To get the last two characters of a string of any length use the special notation of “end’.  You can do then do math with the end notation.  For example:

set str ABCDEFG

set subStr [string range $str end-1 end]

=> FG

[Author]

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