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extra-entries

2.2.12 • Public • Published

Entries is a list of key-value pairs, with unique keys. 🏃 📼 📦 🌔 📒

Methods as separate packages:

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.

nodef

Install

npm i extra-entries

DownloadsWeekly Downloads

167

Version

2.2.12

License

MIT

Unpacked Size

65.7 kB

Total Files

7

Last publish

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