If you're writing a Tcl proc, you'll normally pass in parameters by value, specifying a $ in front of the variable whos contents you want to pass in in the calling sequence:
dojob $passin

If, however, passin is a Tcl array, tis won't work since $passin cannot be expanded to string. So you'll need to make the call using:
dojob passin
and then use upvar within the proc to access the data.

INDIVIDUAL ELEMENTS of an array CAN be passed in to a Tcl Proc by value as they're simple strings:
dojob $passin(demo)
or dojob $passin($elname)

References: our Procedures and Variable Scope and Tcl Array modules

(written 2004-11-18 06:17:00)

 T207 - Tcl/Tk - Procedures and Variable Scope
T208 - Tcl/Tk - Arrays

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