[julia-users] kw arguments and expression question

[Bassem Youssef]

Suppose i have a simple function as follows:

julia> func(a;b=3) = a + b
func (generic function with 1 method)

as expected:
julia> func(3,b=5)
8

julia> ex = :(func(3,b=5))
:(func(3,b=5))

julia> eval(ex)
8

julia> ex.args
3-element Array{Any,1}:
  :func
 3
  :(b=5)

julia> ex.args[3]
:(b=5)

However, this doesn't work:
julia> ex.args[3] = :(b=7)
:(b = 7)

Notice, the extra spacing between b,= and 7
julia> ex.args
3-element Array{Any,1}:
  :func
 3
  :(b = 7)

now this doesn't work:
julia> eval(ex)
ERROR: no method func(Int64, Int64)

regards,
Bassem