Learning Julia

List comprehension in Julia

List comprehensions are frequently used and make populating arrays easier. Let's create an array using list comprehension, where we will populate it with the power of 2:

# create an array of size 10julia> pow2 = Array(Int64,10)10-element Array{Int64,1}:...# assign 2 to the first elementjulia> pow2[1] = 22# using list comprehension populate it with powers of 2julia> [pow2[i] = 2^i for i = 2:length(pow2)]; pow210-element Array{Int64,1}:   2   4   8  16  32  64 128 256 5121024

List comprehension can prove to be very powerful and convenient in various scenarios.