Find the tail of array except first element












1














Is there a method to get the tail of a collection(e.g. vector) i.e. the array except the first element. Currently, I have



tail(arr) = selectdim(arr, 1, 2:length(arr))

julia> c
3-element Array{Int64,1}:
1
2
3

julia> tail(c)
2-element view(::Array{Int64,1}, 2:3) with eltype Int64:
2
3









share|improve this question



























    1














    Is there a method to get the tail of a collection(e.g. vector) i.e. the array except the first element. Currently, I have



    tail(arr) = selectdim(arr, 1, 2:length(arr))

    julia> c
    3-element Array{Int64,1}:
    1
    2
    3

    julia> tail(c)
    2-element view(::Array{Int64,1}, 2:3) with eltype Int64:
    2
    3









    share|improve this question

























      1












      1








      1







      Is there a method to get the tail of a collection(e.g. vector) i.e. the array except the first element. Currently, I have



      tail(arr) = selectdim(arr, 1, 2:length(arr))

      julia> c
      3-element Array{Int64,1}:
      1
      2
      3

      julia> tail(c)
      2-element view(::Array{Int64,1}, 2:3) with eltype Int64:
      2
      3









      share|improve this question













      Is there a method to get the tail of a collection(e.g. vector) i.e. the array except the first element. Currently, I have



      tail(arr) = selectdim(arr, 1, 2:length(arr))

      julia> c
      3-element Array{Int64,1}:
      1
      2
      3

      julia> tail(c)
      2-element view(::Array{Int64,1}, 2:3) with eltype Int64:
      2
      3






      julia-lang






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 at 23:09









      RAbraham

      2,51222643




      2,51222643
























          1 Answer
          1






          active

          oldest

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          3














          Simply use the end keyword:



          julia> c = [11,12,13]
          3-element Array{Int64,1}:
          11
          12
          13

          julia> c[2:end]
          2-element Array{Int64,1}:
          12
          13





          share|improve this answer

















          • 1




            Also @view c[2:end] if you want a view like in OP.
            – 张实唯
            Nov 23 at 2:30










          • yes this is good if you want to avoid copying the data.
            – Przemyslaw Szufel
            Nov 23 at 10:29











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          3














          Simply use the end keyword:



          julia> c = [11,12,13]
          3-element Array{Int64,1}:
          11
          12
          13

          julia> c[2:end]
          2-element Array{Int64,1}:
          12
          13





          share|improve this answer

















          • 1




            Also @view c[2:end] if you want a view like in OP.
            – 张实唯
            Nov 23 at 2:30










          • yes this is good if you want to avoid copying the data.
            – Przemyslaw Szufel
            Nov 23 at 10:29
















          3














          Simply use the end keyword:



          julia> c = [11,12,13]
          3-element Array{Int64,1}:
          11
          12
          13

          julia> c[2:end]
          2-element Array{Int64,1}:
          12
          13





          share|improve this answer

















          • 1




            Also @view c[2:end] if you want a view like in OP.
            – 张实唯
            Nov 23 at 2:30










          • yes this is good if you want to avoid copying the data.
            – Przemyslaw Szufel
            Nov 23 at 10:29














          3












          3








          3






          Simply use the end keyword:



          julia> c = [11,12,13]
          3-element Array{Int64,1}:
          11
          12
          13

          julia> c[2:end]
          2-element Array{Int64,1}:
          12
          13





          share|improve this answer












          Simply use the end keyword:



          julia> c = [11,12,13]
          3-element Array{Int64,1}:
          11
          12
          13

          julia> c[2:end]
          2-element Array{Int64,1}:
          12
          13






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 21 at 0:23









          Przemyslaw Szufel

          1,444110




          1,444110








          • 1




            Also @view c[2:end] if you want a view like in OP.
            – 张实唯
            Nov 23 at 2:30










          • yes this is good if you want to avoid copying the data.
            – Przemyslaw Szufel
            Nov 23 at 10:29














          • 1




            Also @view c[2:end] if you want a view like in OP.
            – 张实唯
            Nov 23 at 2:30










          • yes this is good if you want to avoid copying the data.
            – Przemyslaw Szufel
            Nov 23 at 10:29








          1




          1




          Also @view c[2:end] if you want a view like in OP.
          – 张实唯
          Nov 23 at 2:30




          Also @view c[2:end] if you want a view like in OP.
          – 张实唯
          Nov 23 at 2:30












          yes this is good if you want to avoid copying the data.
          – Przemyslaw Szufel
          Nov 23 at 10:29




          yes this is good if you want to avoid copying the data.
          – Przemyslaw Szufel
          Nov 23 at 10:29


















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