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Add _.countBy and related unit tests, benchmarks, and documentation.

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Former-commit-id: 915eaf414883a1dc344a558b08c7a1337ab5a225
This commit is contained in:
John-David Dalton
2012-07-19 01:29:51 -04:00
parent 7487497d1f
commit 9848ffb77f
7 changed files with 332 additions and 207 deletions
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62
perf/perf.js
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@@ -136,7 +136,7 @@
}
}
if (typeof groupBy != 'undefined') {
if (typeof countBy != 'undefined') {
var wordToNumber = {
'one': 1,
'two': 2,
@@ -515,6 +515,50 @@
/*--------------------------------------------------------------------------*/
suites.push(
Benchmark.Suite('`_.countBy` with `callback` iterating an array')
.add('Lo-Dash', function() {
lodash.countBy(numbers, function(num) { return num >> 1; });
})
.add('Underscore', function() {
_.countBy(numbers, function(num) { return num >> 1; });
})
);
suites.push(
Benchmark.Suite('`_.countBy` with `property` name iterating an array')
.add('Lo-Dash', {
'fn': function() {
lodash.countBy(words, 'length');
},
'teardown': 'function countBy(){}'
})
.add('Underscore', {
'fn': function() {
_.countBy(words, 'length');
},
'teardown': 'function countBy(){}'
})
);
suites.push(
Benchmark.Suite('`_.countBy` with `callback` iterating an object')
.add('Lo-Dash', {
'fn': function() {
lodash.countBy(wordToNumber, function(num) { return num >> 1; });
},
'teardown': 'function countBy(){}'
})
.add('Underscore', {
'fn': function() {
_.countBy(wordToNumber, function(num) { return num >> 1; });
},
'teardown': 'function countBy(){}'
})
);
/*--------------------------------------------------------------------------*/
suites.push(
Benchmark.Suite('`_.difference`')
.add('Lo-Dash', function() {
@@ -749,13 +793,13 @@
'fn': function() {
lodash.groupBy(words, 'length');
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
.add('Underscore', {
'fn': function() {
_.groupBy(words, 'length');
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
);
@@ -765,13 +809,13 @@
'fn': function() {
lodash.groupBy(wordToNumber, function(num) { return num >> 1; });
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
.add('Underscore', {
'fn': function() {
_.groupBy(wordToNumber, function(num) { return num >> 1; });
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
);
@@ -1149,13 +1193,13 @@
'fn': function() {
lodash.sortBy(words, 'length');
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
.add('Underscore', {
'fn': function() {
_.sortBy(words, 'length');
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
);
@@ -1179,7 +1223,7 @@
return wordToNumber[value];
});
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
.add('Underscore', {
'fn': function() {
@@ -1187,7 +1231,7 @@
return wordToNumber[value];
});
},
'teardown': 'function groupBy(){}'
'teardown': 'function countBy(){}'
})
);