# Error in Broadcast in v0.7/v1.0

**URL:** https://discourse.julialang.org/t/error-in-broadcast-in-v0-7-v1-0/13547
**Category:** General Usage
**Created:** [August 16, 2018, 6:26am UTC](https://discourse.julialang.org/t/error-in-broadcast-in-v0-7-v1-0/13547 "2018-08-16T06:26:23Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Roger-luo](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/roger-luo/32/3399_2.png) [@Roger-luo](https://discourse.julialang.org/u/Roger-luo)
#### Post date: [August 16, 2018, 6:26am UTC](https://discourse.julialang.org/t/error-in-broadcast-in-v0-7-v1-0/13547/1 "2018-08-16T06:26:23Z")

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Someone from [discourse.juliacn.com](http://discourse.juliacn.com) (the Chinese one) found this, I just translate for him. I think this is a bug? not what I expected.

```julia
julia> 1 .+ (1, 2)
(2, 3)

julia> 1 .+ 1 .+ (1, 2)
ERROR: MethodError: no method matching argtail()
Closest candidates are:
  argtail(::Any, ::Any...) at essentials.jl:172
Stacktrace:
 [1] tail(::Tuple{}) at ./essentials.jl:173
 [2] longest_tuple(::Nothing, ::Tuple{}) at ./broadcast.jl:928 (repeats 3 times)
 [3] longest_tuple(::Nothing, ::Tuple{Base.Broadcast.Broadcasted{Base.Broadcast.DefaultArrayStyle{0},Nothing,typeof(+),Tuple{Int64,Int64}},Tuple{Int64,Int64}}) at ./broadcast.jl:927
 [4] copy at ./broadcast.jl:920 [inlined]
 [5] materialize(::Base.Broadcast.Broadcasted{Base.Broadcast.Style{Tuple},Nothing,typeof(+),Tuple{Base.Broadcast.Broadcasted{Base.Broadcast.DefaultArrayStyle{0},Nothing,typeof(+),Tuple{Int64,Int64}},Tuple{Int64,Int64}}}) at ./broadcast.jl:724
 [6] top-level scope at none:0

```

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<div class="post-metadata">

### Author: ![fredrikekre](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fredrikekre/32/1688_2.png) [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [August 16, 2018, 6:28am UTC](https://discourse.julialang.org/t/error-in-broadcast-in-v0-7-v1-0/13547/2 "2018-08-16T06:28:04Z")

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