Reading text files with wrapped numerical data

General Usage Performance
8 
function read_n_per_row(file, n)
    dat = Float64[]
    for line in eachline(file), word in split(line)
        push!(dat, parse(Float64, word))
    end
    l = length(dat)
    iszero(l % n) || error("Number of file entries ", l, " not divisible by ", n)
    m = l ÷ n
    return transpose(reshape(dat, (n, m)))
end

using BenchmarkTools

@btime read_n_wrapped_floats2($file, $n); # 8.074 μs (87 allocations: 5.48 KiB)

@btime read_n_per_row($file, $n) # 6.747 μs (43 allocations: 4.07 KiB)

read_n_wrapped_floats2(file, n) == read_n_per_row(file, n) # true
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