Consider objects a and b, which are array of arrays defined below. These objects are equal according to Julia and the only difference is in how I create them. But double-indexing works very differently on each. julia> a=fill([3,4],2) 2-element Array{Array{Int64,1},1}: [3, 4] [3, 4] julia> b=[[3,…

The issue is not with indexing but at the creation of a : when you use fill([3,4],2), both elements of a point to the same object in memory (here a vector of value [3,4]). You can check that a[1]===a[2] (note the triple = ) whereas b[1] !=== b[2]. Which means that modifying this object will be refle…

Inconsistent behavior with double indexing?

General Usage

Andrea_Pagnani August 23, 2019, 6:14pm 5

See also the somehow related old discussion here …

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