make show copy and pastable

Author: jverzani

src/Polynomials.jl

@@ -228,6 +228,8 @@ one{T}(::Type{Poly{T}}) = Poly([one(T)])
 ## Overload arithmetic operators for polynomial operations between polynomials and scalars
 *{T<:Number,S}(c::T, p::Poly{S}) = Poly(c * p.a, p.var)
 *{T<:Number,S}(p::Poly{S}, c::T) = Poly(p.a * c, p.var)
+Base.dot{T<:Number,S}(p::Poly{S}, c::T) = p * c
+Base.dot{T<:Number,S}(c::T, p::Poly{S}) = c * p
 .*{T<:Number,S}(c::T, p::Poly{S}) = Poly(c * p.a, p.var)
 .*{T<:Number,S}(p::Poly{S}, c::T) = Poly(p.a * c, p.var)
 /(p::Poly, c::Number) = Poly(p.a / c, p.var)

src/show.jl

@@ -28,6 +28,7 @@ function printterm{T}(io::IO,p::Poly{T},j,first)
     pj = abs(pj)
     if pj != one(T) || j == 0
         show(io,pj)
+        j != 0 && print(io, "⋅")
     end
     printexponent(io,p.var,j)
     true
@@ -57,15 +58,18 @@ function printterm{T<:Complex}(io::IO,p::Poly{T},j,first)
     if abs_repj > 2*eps(T)    #Real part is not 0
         if abs_impj > 2*eps(T)    #Imag part is not 0
             print(io,'(',neg ? -pj : pj,')')
+            abs(pj) != 1 &&  j != 0 && print(io, "⋅")
         else
             print(io, neg ? -real(pj) : real(pj))
+            abs(pj) != 1 && j != 0 && print(io, "⋅")            
         end
     else
         if abs_impj > 2*eps(T)
             print(io,'(', abs(imag(pj)),"im)")
+            abs(pj) != 1 && j != 0 &&  print(io, "⋅")                  
         end
     end
-    printexponent(io,p.var,j)
+    printexponent(io, p.var,j)
     true
 end