Syntax sugar for "dict set" and "dict get".

======
rename set _set

proc set {args} {
    if {[llength $args] <= 2} {
        uplevel [list _set {*}$args]
    } else {
        uplevel [list dict set {*}$args]
    }
}

proc get {dict args} {
    uplevel dict get [list $dict] $args
}
======

This over-loads plain-old "set" to allow "set dict_var key... $value" as shorthand for "dict set dict_var key... $value".
Normal "set" behaviour is retained.

"get" is there too for symmetry.

Some may see this as heresy, but I think it makes dictionary-heavy scripts more readable :)

----
[AMG]: Avoiding [[[uplevel]]] which is slightly more dangerous than [[[eval]]]:

======
rename set _set
proc set {varName args} {
    uplevel 1 $varName var
    if {[llength $args] <= 1} {
        _set var {*}$args
    } else {
        dict set var {*}$args
    }
}
interp alias {} get {} dict get
======

Also, because no caller variables are being accessed, there's no reason to use [[uplevel]] in your [[get]] command.  I used [[[interp alias]]] to create an alias, since renaming (actually, partial application of [command prefix]es) is all that's happening.  It's also possible to write: `proc get {dict args} {dict get $dict {*}$args}`.

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