| 1 | # Run with _bin/cxx-opt/ysh
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| 2 |
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| 3 | proc filter (; predicate) {
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| 4 | for line in (io.stdin) {
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| 5 | if (io->evalExpr(predicate, vars={_val: fromJson8(line)})) {
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| 6 | write -- $line
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| 7 | }
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| 8 | }
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| 9 | }
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| 10 |
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| 11 | #
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| 12 | # Setup
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| 13 | #
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| 14 |
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| 15 | var f = '_tmp/b1'
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| 16 |
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| 17 | for i in (0 ..= 100_000) {
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| 18 | json write ({}, space=0)
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| 19 | } > $f
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| 20 |
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| 21 | #
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| 22 | # Benchmarks
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| 23 | #
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| 24 |
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| 25 | var N = 2
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| 26 |
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| 27 | proc with-default {
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| 28 | write -- u'get() with default\n'
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| 29 | write -- 'BEFORE ------------------------------------------------------'
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| 30 |
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| 31 | for _ in (0 ..< N) {
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| 32 | time for line in (io.stdin) {
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| 33 | call fromJson8(line)
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| 34 | } < $f
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| 35 | write
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| 36 | }
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| 37 |
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| 38 | echo 'FILTER with default'
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| 39 | time filter [get(_val, 'missing-key', 0) === 0] < $f >/dev/null
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| 40 |
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| 41 | write -- 'AFTER -------------------------------------------------------'
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| 42 |
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| 43 | for _ in (0 ..< N) {
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| 44 | time for line in (io.stdin) {
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| 45 | call fromJson8(line)
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| 46 | } < $f
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| 47 | write
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| 48 | }
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| 49 | }
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| 50 |
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| 51 | proc without-default {
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| 52 | write -- u'get() without default\n'
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| 53 | write -- 'BEFORE ------------------------------------------------------'
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| 54 |
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| 55 | for _ in (0 ..< N) {
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| 56 | time for line in (io.stdin) {
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| 57 | call fromJson8(line)
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| 58 | } < $f
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| 59 | write
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| 60 | }
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| 61 |
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| 62 | echo 'FILTER without default'
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| 63 |
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| 64 | for line in (io.stdin) {
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| 65 | var d = fromJson8(line)
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| 66 | call get(d, 'missing-key')
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| 67 | } < $f
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| 68 |
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| 69 | #time filter [get(_val, 'missing-key', 0) === 0] < $f >/dev/null
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| 70 | time filter [get(_val, 'missing-key')] < $f #>/dev/null
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| 71 |
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| 72 | write -- 'AFTER -------------------------------------------------------'
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| 73 |
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| 74 | for _ in (0 ..< N) {
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| 75 | time for line in (io.stdin) {
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| 76 | call fromJson8(line)
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| 77 | } < $f
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| 78 | write
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| 79 | }
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| 80 | }
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| 81 |
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| 82 |
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| 83 | with-default
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| 84 | without-default
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| 85 |
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