Comments (4)
See #3776
I'm marking this as a bug fix, because we already had value(::Number)
, just not value(::Function, ::Number)
.
from jump.jl.
I understand the motivation, but this makes me go hmmmmmmmm.
julia> using JuMP
julia> model = Model();
julia> @variable(model, x, start = 2);
julia> @expression(model, expr[i in 0:2], (1 + x)^i)
1-dimensional DenseAxisArray{Any,1,...} with index sets:
Dimension 1, 0:2
And data, a 3-element Vector{Any}:
1.0
x + 1
x² + 2 x + 1
julia> value.(start_value, expr)
ERROR: MethodError: no method matching value(::typeof(start_value), ::Float64)
from jump.jl.
Yes, that feels like it should error. Do you have a suggested workaround? In my package I have essentially the code I suggested, which isn't the best.
I'm also moderately embarrassed I didn't think to just put start_value
in value. Obviously that's better than building a dictionary.
from jump.jl.
I'm thinking about this more and value(F, 1)
feels like it should still be 1. You're taking the value and the value is always 1, regardless of the function. Does this cause issues if F is some "weird" function?
from jump.jl.
Related Issues (20)
- Multiplication of matrix expression and variables leads to stack overflow and matmul error HOT 4
- Multiple Ranges for variables HOT 3
- Y' when Y is of type ::Matrix{NonlinearExpr} HOT 1
- Poor performance in complementarity models HOT 23
- Add a method for Complex(a,b) HOT 8
- MethodError with empty summations HOT 1
- Nonlinear subexpressions HOT 4
- Should error when trying to mix `NonlinearExpression` and `GenericNonlinearExpr` HOT 1
- Support normalized_coefficient for vector-valued constraints
- Precompilation in CI fails on v1.22 HOT 7
- Fuzzy search on unrecognized keyword arguments to give suggestions HOT 2
- Track failures on nightly HOT 3
- Possibly missing diagnostics for vector of vector of variables HOT 3
- Printing of large vectorized constraints should probably cause output eliding? HOT 5
- Deleting part of containerized constraints makes whole constraint unprintable HOT 2
- function_string of Symmetric matrix includes the entire matrix HOT 7
- Inequality constraints over symmetric matrices are cumbersome HOT 9
- Set inequality syntax suggestion HOT 28
- Error when adding a constraint with a partially initialized Symmetric matrix HOT 2
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from jump.jl.