| 1 | # Run with _bin/cxx-opt/ysh
|
| 2 |
|
| 3 | proc filter (; predicate) {
|
| 4 | for line in (io.stdin) {
|
| 5 | if (io->evalExpr(predicate, vars={_val: fromJson8(line)})) {
|
| 6 | write -- $line
|
| 7 | }
|
| 8 | }
|
| 9 | }
|
| 10 |
|
| 11 | #
|
| 12 | # Setup
|
| 13 | #
|
| 14 |
|
| 15 | var f = '_tmp/b1'
|
| 16 |
|
| 17 | for i in (0 ..= 100_000) {
|
| 18 | json write ({}, space=0)
|
| 19 | } > $f
|
| 20 |
|
| 21 | #
|
| 22 | # Benchmarks
|
| 23 | #
|
| 24 |
|
| 25 | var N = 2
|
| 26 |
|
| 27 | proc with-default {
|
| 28 | write -- u'get() with default\n'
|
| 29 | write -- 'BEFORE ------------------------------------------------------'
|
| 30 |
|
| 31 | for _ in (0 ..< N) {
|
| 32 | time for line in (io.stdin) {
|
| 33 | call fromJson8(line)
|
| 34 | } < $f
|
| 35 | write
|
| 36 | }
|
| 37 |
|
| 38 | echo 'FILTER with default'
|
| 39 | time filter [get(_val, 'missing-key', 0) === 0] < $f >/dev/null
|
| 40 |
|
| 41 | write -- 'AFTER -------------------------------------------------------'
|
| 42 |
|
| 43 | for _ in (0 ..< N) {
|
| 44 | time for line in (io.stdin) {
|
| 45 | call fromJson8(line)
|
| 46 | } < $f
|
| 47 | write
|
| 48 | }
|
| 49 | }
|
| 50 |
|
| 51 | proc without-default {
|
| 52 | write -- u'get() without default\n'
|
| 53 | write -- 'BEFORE ------------------------------------------------------'
|
| 54 |
|
| 55 | for _ in (0 ..< N) {
|
| 56 | time for line in (io.stdin) {
|
| 57 | call fromJson8(line)
|
| 58 | } < $f
|
| 59 | write
|
| 60 | }
|
| 61 |
|
| 62 | echo 'FILTER without default'
|
| 63 | time filter [get(_val, 'missing-key')] < $f #>/dev/null
|
| 64 |
|
| 65 | write -- 'AFTER -------------------------------------------------------'
|
| 66 |
|
| 67 | for _ in (0 ..< N) {
|
| 68 | time for line in (io.stdin) {
|
| 69 | call fromJson8(line)
|
| 70 | } < $f
|
| 71 | write
|
| 72 | }
|
| 73 | }
|
| 74 |
|
| 75 |
|
| 76 | with-default
|
| 77 | without-default
|
| 78 |
|