Import Base.eachindex for overloading

Closes #118.

Author: Arda Aytekin

src/Polynomials.jl

@@ -12,7 +12,7 @@ export degree, coeffs, variable
 export polyval, polyint, polyder, roots, polyfit
 export Pade, padeval
 
-import Base: start, next, done, length, size, eltype, collect
+import Base: start, next, done, length, size, eltype, collect, eachindex
 import Base: endof, getindex, setindex!, copy, zero, one, convert, norm, gcd
 import Base: show, print, *, /, //, -, +, ==, isapprox, divrem, div, rem, eltype
 import Base: promote_rule, truncate, chop,  conj, transpose, dot, hash
@@ -286,7 +286,7 @@ end
 
 setindex!(p::Poly, values, ::Colon) = setindex!(p, values, 0:length(p)-1)
 
-eachindex{T}(p::Poly{T}) = 0:(length(p)-1)
+eachindex(p::Poly) = 0:degree(p)
 
 copy(p::Poly) = Poly(copy(p.a), p.var)
 

test/runtests.jl

@@ -339,3 +339,5 @@ end
 @test_throws InexactError collect(Poly{Int}, Poly([1.2]))
 
 @test length(collect(p1)) == degree(p1)+1
+
+@test [p1[idx] for idx in eachindex(p1)] == [1,2,0,3]