Open Radar

 
Compiling a Swift program containing only

    let arr = [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12]]

takes 5.48 seconds for me. With each additional element, compile time doubles.

Nepheli:~ ken$ perl -e 'foreach$n(1..13){$code="let arr = [[".join("], [",1...$n)."]]";print $code."\n";`echo $code | time swift -`}'
let arr = [[1]]
        0.05 real         0.03 user         0.01 sys
let arr = [[1], [2]]
        0.05 real         0.03 user         0.01 sys
let arr = [[1], [2], [3]]
        0.05 real         0.03 user         0.01 sys
let arr = [[1], [2], [3], [4]]
        0.05 real         0.03 user         0.01 sys
let arr = [[1], [2], [3], [4], [5]]
        0.06 real         0.04 user         0.01 sys
let arr = [[1], [2], [3], [4], [5], [6]]
        0.07 real         0.05 user         0.01 sys
let arr = [[1], [2], [3], [4], [5], [6], [7]]
        0.11 real         0.09 user         0.01 sys
let arr = [[1], [2], [3], [4], [5], [6], [7], [8]]
        0.20 real         0.18 user         0.01 sys
let arr = [[1], [2], [3], [4], [5], [6], [7], [8], [9]]
        0.45 real         0.43 user         0.02 sys
let arr = [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10]]
        0.98 real         0.95 user         0.02 sys
let arr = [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11]]
        2.41 real         2.37 user         0.03 sys
let arr = [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12]]
        5.48 real         5.42 user         0.05 sys
let arr = [[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13]]
       12.49 real        12.39 user         0.08 sys