Entries is a list of key-value pairs, with unique keys.
Methods as separate packages:
-
@extra-entries/find: use rollup to bundle this es module. -
@extra-entries/find.min: use in browser (browserify, uglify-js).
After Mount St. Helens erupted, researchers had a blank slate from which to explore the science of ecological recovery. Scientist Charley Crisafulli was drawn to log-covered Spirit Lake, where nutrient rich waters fueled an unusually fast resurgence in fish, plant life and amphibians. It’s a phenomenon that continues to fascinate scientists everywhere. Originally broadcast in 2008. (1)
Stability: Experimental.
const entries = require('extra-entries');
// import * as entries from 'extra-entries';
// import * as entries from 'https://unpkg.com/extra-entries@2.2.10/index.mjs'; (deno)
var x = [['a', 1], ['b', 2], ['c', 3], ['d', 4], ['e', 5]];
[...entries.filter(x, v => v % 2 === 1)];
// [ [ 'a', 1 ], [ 'c', 3 ], [ 'e', 5 ] ]
var x = [['a', 1], ['b', 2], ['c', -3], ['d', -4]];
entries.some(x, v => v > 10);
// false
var x = [['a', 1], ['b', 2], ['c', -3], ['d', -4]];
entries.min(x);
// [ 'd', -4 ]
var x = [['a', 1], ['b', 2], ['c', 3]];
[...entries.subsets(x)].map(a => [...a]);
// [
// [],
// [ [ 'a', 1 ] ],
// [ [ 'b', 2 ] ],
// [ [ 'a', 1 ], [ 'b', 2 ] ],
// [ [ 'c', 3 ] ],
// [ [ 'a', 1 ], [ 'c', 3 ] ],
// [ [ 'b', 2 ], [ 'c', 3 ] ],
// [ [ 'a', 1 ], [ 'b', 2 ], [ 'c', 3 ] ]
// ]reference
| Method | Action |
|---|---|
| is | Checks if value is entries. |
| get | Gets value at key. |
| set | Sets value at key. |
| remove | Deletes an entry. |
| swap | Exchanges two values. |
| size | Gets size of entries. |
| head | Gets first entry. |
| take | Keeps first n entries only. |
| shift | Removes first entry. |
| fromLists | Creates entries from lists. |
| concat | Appends entries from maps, preferring last. |
| flat | Flattens nested entries to given depth. |
| chunk | Breaks entries into chunks of given size. |
| filterAt | Gets entries with given keys. |
| map | Updates values based on map function. |
| filter | Keeps entries which pass a test. |
| reduce | Reduces values to a single value. |
| range | Finds smallest and largest entries. |
| count | Counts values which satisfy a test. |
| partition | Segregates values by test result. |
| cartesianProduct | Lists cartesian product of entries. |
| some | Checks if any value satisfies a test. |
| zip | Combines matching entries from all entries. |
| union | Gives entries present in any entries. |
| intersection | Gives entries present in both entries. |
| difference | Gives entries not present in another. |
| symmetricDifference | Gives entries not present in both entries. |
| isDisjoint | Checks if entries have no common keys. |
| key | Picks an arbitrary key. |
| value | Picks an arbitrary value. |
| entry | Picks an arbitrary entry. |
| subset | Gives an arbitrary subset. |
| isEmpty | Checks if entries is empty. |
| isEqual | Checks if two maps are equal. |
| compare | Compares two entries. |
| find | Finds a value passing a test. |
| search | Finds key of an entry passing a test. |
| scanWhile | Finds key of first entry not passing a test. |
