OK, maybe this is pathological, but I was thinking maybe this would be an easy way to add unit conversion within equations in ModelingToolkit:
@syms x y z
summed = x + y + z
# Black magic
summed.dict[z] = 2 *summed.dict[z] # Multiply by new coefficient
print(summed)
The printout is still:
x + y + z
But I see the dict is successfully modified:
julia> summed.dict
Dict{Any, Number} with 3 entries:
y => 1
x => 1
z => 2
So that means I changed the equation, right? So, there's a bug in the show function because it's not showing the correct value of the sum now. (Or is the dict just a leftover from the construction of the sum, and I shouldn't try to change the sum by modifying the dict? Maybe it should be immutable?)
OK, maybe this is pathological, but I was thinking maybe this would be an easy way to add unit conversion within equations in ModelingToolkit:
The printout is still:
But I see the
dictis successfully modified:So that means I changed the equation, right? So, there's a bug in the
showfunction because it's not showing the correct value of the sum now. (Or is thedictjust a leftover from the construction of the sum, and I shouldn't try to change the sum by modifying the dict? Maybe it should be immutable?)