Re: WHILE and IF

In article <1137277182.227538.314190@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
suchenwi <richard.suchenwirth-bauersachs@xxxxxxxxxxx> wrote:
>> if ([string compare $line $header] == 0) continue
>Won't work. Parens in Tcl are not special, except for array indexing.
>The condition for [if] is typically put in braces:
> if {[string compare $line $header] == 0} continue
>But using [string compare] is a bit old-fashioned too, nowadays we'd
>just use the "eq" operator and write
> if {$line eq $header} continue

Hmm..

When did eq get added, and is there some documentation that explains the
differences (I assume there are some) between:

if { $line eq $header }
and
if { $line == $header }

?

Thanks,
Mattias
.

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