diff --git a/src/show.jl b/src/show.jl
index b7dae03..98b919d 100644
--- a/src/show.jl
+++ b/src/show.jl
@@ -3,19 +3,25 @@ const DECIMALS = 4  # the maximum number of decimals to show
 const PADDING = 2  # number of spaces minimum between fields
 const SHOWINT = false  # whether to format integer columns without decimals
 
-import Base: isinteger, strwidth, rpad, summary
-rpad(s::Symbol, n::Int)::String = rpad(string(s), n)
-isinteger(::String)::Bool = false
-isinteger(::Symbol)::Bool = false
-isinteger(::Char)::Bool = false
-isinteger(::Date)::Bool = false
-isinteger(::DateTime)::Bool = false
-isinteger(::Function)::Bool = false
-strwidth(s::Symbol)::Int = strwidth(string(s))
-strwidth(n::Number)::Int = strwidth(string(n))
-strwidth(f::Function)::Int = strwidth(string(f))
-strwidth(b::Bool)::Int = b ? 4 : 5
-strwidth(c::Char)::Int = 1
+# rpad(s::Symbol, n::Int)::String = rpad(string(s), n)
+# isinteger(::String)::Bool = false
+# isinteger(::Symbol)::Bool = false
+# isinteger(::Char)::Bool = false
+# isinteger(::Date)::Bool = false
+# isinteger(::DateTime)::Bool = false
+# isinteger(::Function)::Bool = false
+# strwidth(s::Symbol)::Int = strwidth(string(s))
+# strwidth(n::Number)::Int = strwidth(string(n))
+# strwidth(f::Function)::Int = strwidth(string(f))
+# strwidth(b::Bool)::Int = b ? 4 : 5
+# strwidth(c::Char)::Int = 1
+
+str_width(s::AbstractString)::Int = strwidth(string(s))
+str_width(s::Symbol)::Int = strwidth(string(s))
+str_width(n::Number)::Int = strwidth(string(s))
+str_width(f::Function)::Int = strwidth(string(s))
+str_width(b::Bool)::Int = b ? 4 : 5
+str_width(c::Char)::Int = 1
 
 function print_summary{V,T}(io::IO, x::TS{V,T})::Int
     if isempty(x)
@@ -39,16 +45,16 @@ function getshowrows{V,T}(io::IO, x::TS{V,T})::Tuple{Vector{Int},Vector{Int}}
 end
 
 function getwidths{V,T}(io::IO, x::TS{V,T})::Vector{Int}
-    widths = [T==Date?10:19; strwidth.(x.fields)]
+    widths = [T==Date?10:19; str_width.(x.fields)]
     toprows, botrows = getshowrows(io, x)
     vals = [x.values[toprows,:]; x.values[botrows,:]]
     if V <: Number
         @inbounds for j in 1:size(x,2)
-            widths[j+1] = max(widths[j+1], maximum(strwidth.(round.(vals[:,j],DECIMALS))))
+            widths[j+1] = max(widths[j+1], maximum(str_width.(round.(vals[:,j],DECIMALS))))
         end
     else
         @inbounds for j in 1:size(x,2)
-            widths[j+1] = max(widths[j+1], maximum(strwidth.(vals[:,j])))
+            widths[j+1] = max(widths[j+1], maximum(str_width.(vals[:,j])))
         end
     end
     return widths
@@ -62,7 +68,7 @@ function getnegs(io::IO, x::TS)::Vector{Bool}
     return [hasnegs(x.values[:,j]) for j in 1:size(x,2)]
 end
 
-print_header(x::TS, widths::Vector{Int}, negs::Vector{Bool})::String = prod(rpad.(["Index"; lpad.(string.(x.fields), strwidth.(x.fields).+negs)], widths))
+print_header(x::TS, widths::Vector{Int}, negs::Vector{Bool})::String = prod(rpad.(["Index"; lpad.(string.(x.fields), str_width.(x.fields).+negs)], widths))
 
 function print_row{V,T}(x::TS{V,T}, row::Int, widths::Vector{Int}, negs::Vector{Bool})::String
     if V <: Number