[julia-users] recommended performant approach of expanding a large array

[John Drummond]

Hi,
I'm parsing some log files of a few million lines. 
I'm pulling out two or three numeric values and a code into an array of a 
custom type.

a simple approach would be something like

for line in eachline(myInFile)
    push!(myArray, myType(Int64(line[1:4]), Int64(line[5:8]), line[15:16] )end

What would be a more idiomatic performant approach?

pre initializing myArray and then checking the length each time to see whether 
to expand by a another 20%?

Obviously I'll benchmark it but I was hoping for a push in the right direction.

Many thanks.John.