Karl Lehenbauer wrote:
How about if "get" still returns an empty string when the key doesn't
exist but I implement "exists" for people who want to clearly
distinguish between missing and empty?
it might work out a compromise.
I also considered adding an optional argument to "get" of a variable
name to load with the value and having it return 1 or 0 on whether or
not the key exists...
if {[apache_table get notes key valueVar]} {
}
...but it seems like overkill.
what if 'apache_table get notes key' returns an error if 'key' is not
existing or returns $valueVar if the last argument is present?
if {[catch {apache_table get notes key} errcode]} { ... }
if {[apache_table get notes key ""] == ""} { ... }
this would enable us to use also defaults that are numbers...
-karl
PS - As an aside, Tcl arrays should have a settable default, "array
default arrayName 0" would be cool, although newer incr will
instantiate a nonexistent variable at 0. Also there should be
something like "array foreach arrayName var code".
yes definitely. Will you bring up a proposal for this on Tclcore?
-- Massimo
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