[julia-users] getindex for a real number

[Ehsan Eftekhari]

 I have a question about this behaviour of getindex in Julia:

if I say

julia> a=1.0
1.0

then

julia> a[1]
1.0

julia> a[end]
1.0

but

julia> a[:]
ERROR: MethodError: `getindex` has no method matching getindex(::Float64, 
::Colon)
Closest candidates are:
  getindex(::Number)
  getindex(::Number, ::Integer)
  getindex(::Number, ::Integer...)
  ...

Why the last one does not work?