mirror of
https://github.com/whoisclebs/lodash.git
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Optimize _.uniq for large arrays.
Former-commit-id: 6c739aab6bcb8c31f9db9821d6eaf50c9a4fb80b
This commit is contained in:
John-David Dalton
13
lodash.js
13
lodash.js
@@ -436,7 +436,7 @@
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/*--------------------------------------------------------------------------*/
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/**
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* Creates a function optimized for searching large arrays for a given `value`,
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* Creates a function optimized to search large arrays for a given `value`,
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* starting at `fromIndex`, using strict equality for comparisons, i.e. `===`.
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*
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* @private
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@@ -2981,6 +2981,11 @@
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callback = isSorted;
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isSorted = false;
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}
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// init value cache for large arrays
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var isLarge = !isSorted && length > 74;
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if (isLarge) {
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var cache = {};
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}
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if (callback) {
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seen = [];
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callback = createCallback(callback, thisArg);
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@@ -2989,11 +2994,15 @@
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var value = array[index],
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computed = callback ? callback(value, index, array) : value;
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if (isLarge) {
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var key = computed + '';
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seen = hasOwnProperty.call(cache, key) ? cache[key] : (cache[key] = []);
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}
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if (isSorted
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? !index || seen[seen.length - 1] !== computed
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: indexOf(seen, computed) < 0
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) {
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if (callback) {
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if (callback || isLarge) {
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seen.push(computed);
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}
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result.push(value);
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46
lodash.min.js
vendored
46
lodash.min.js
vendored
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|
||||
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module&&module&&module.exports==W?(module.exports=l)._=l:W._=l:e._=l})(this);
|
||||
36
perf/perf.js
36
perf/perf.js
@@ -1657,6 +1657,42 @@
|
||||
)
|
||||
);
|
||||
|
||||
suites.push(
|
||||
Benchmark.Suite('`_.uniq` iterating an array of 50 elements')
|
||||
.add(buildName, {
|
||||
'fn': 'lodash.uniq(twentyFiveValues.concat(twentyFiveValues2));',
|
||||
'teardown': 'function multiArrays(){}'
|
||||
})
|
||||
.add(otherName, {
|
||||
'fn': '_.uniq(twentyFiveValues.concat(twentyFiveValues2));',
|
||||
'teardown': 'function multiArrays(){}'
|
||||
})
|
||||
);
|
||||
|
||||
suites.push(
|
||||
Benchmark.Suite('`_.uniq` iterating an array of 75 elements')
|
||||
.add(buildName, {
|
||||
'fn': 'lodash.uniq(fiftyValues.concat(twentyFiveValues2));',
|
||||
'teardown': 'function multiArrays(){}'
|
||||
})
|
||||
.add(otherName, {
|
||||
'fn': '_.uniq(fiftyValues.concat(twentyFiveValues2));',
|
||||
'teardown': 'function multiArrays(){}'
|
||||
})
|
||||
);
|
||||
|
||||
suites.push(
|
||||
Benchmark.Suite('`_.uniq` iterating an array of 100 elements')
|
||||
.add(buildName, {
|
||||
'fn': 'lodash.uniq(seventyFiveValues.concat(twentyFiveValues2));',
|
||||
'teardown': 'function multiArrays(){}'
|
||||
})
|
||||
.add(otherName, {
|
||||
'fn': '_.uniq(seventyFiveValues.concat(twentyFiveValues2));',
|
||||
'teardown': 'function multiArrays(){}'
|
||||
})
|
||||
);
|
||||
|
||||
/*--------------------------------------------------------------------------*/
|
||||
|
||||
suites.push(
|
||||
|
||||
Reference in New Issue
Block a user