CODEWITHSUNDEEP
scriptingtcl
Dynamo
Dynamo

Reputation: 137

String comparison in TCL

I have a variable nodename = v445 and another variable nodepatch=v445-sctpsv

I want to compare as 

if { $nodename == ???????} {
 }

so here I just want to compare only part before certain - the second variable could contain more than one - in name, so I just want to extract equivalent string to nodename to compare with. after string manipulation second part should come up like this:

if { $nodename == "v445"} {
 proceed } else { 
}

Upvotes: 1

Views: 2862

Answers (1)

Peter Lewerin
Peter Lewerin

Reputation: 13252

Try

set nodename v445
set nodepatch v445-sctpsv

if {[string match $nodename* $nodepatch]} {
    proceed
} else {
}

string match does a glob-style match against a string, in this case the string that starts with the value in $nodename and contains zero or more characters is matched against the string $nodepatch.

If you need to ensure that the dash occurs, use string match $nodename-* $nodepatch instead.

Documentation: if, set, string

Upvotes: 2

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