add selectdim(A, 2, 3:4) example (JuliaLang#40456)

PaulSoderlind · johanmon · commit dba2a7a3eb33 · 2021-07-05T11:42:37.000+02:00
This adds a `selectdim(A, 2, 3:4)` example to illustrate that several indices can be used (as this is not entirely clear in the text). Based on a suggestion in https://discourse.julialang.org/t/pick-rows-from-array-ndims-not-known-in-advance/59033/6
diff --git a/base/abstractarraymath.jl b/base/abstractarraymath.jl
@@ -117,6 +117,11 @@ julia> selectdim(A, 2, 3)
 2-element view(::Matrix{Int64}, :, 3) with eltype Int64:
  3
  7
+
+julia> selectdim(A, 2, 3:4)
+2×2 view(::Matrix{Int64}, :, 3:4) with eltype Int64:
+ 3  4
+ 7  8
 ```
 """
 @inline selectdim(A::AbstractArray, d::Integer, i) = _selectdim(A, d, i, _setindex(i, d, map(Slice, axes(A))...))

Original file line number	Diff line number	Diff line change
`@@ -117,6 +117,11 @@ julia> selectdim(A, 2, 3)`
`117`	`117`	`2-element view(::Matrix{Int64}, :, 3) with eltype Int64:`
`118`	`118`	`3`
`119`	`119`	`7`
	`120`	`+`
	`121`	`+julia> selectdim(A, 2, 3:4)`
	`122`	`+2×2 view(::Matrix{Int64}, :, 3:4) with eltype Int64:`
	`123`	`+ 3 4`
	`124`	`+ 7 8`
`120`	`125`	```
`121`	`126`	`"""`
`122`	`127`	`@inline selectdim(A::AbstractArray, d::Integer, i) = _selectdim(A, d, i, _setindex(i, d, map(Slice, axes(A))...))`