Skip to content

More performant compact map #344

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
dubiousdavid wants to merge 5 commits into
base: master
Choose a base branch
from
Open

More performant compact map #344

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
972d396
More performant compactMap.
dubiousdavid Feb 21, 2022
0b3f916
Fix Babel.
dubiousdavid Feb 21, 2022
e37b9d5
Automagically formatted by Duti!
decrapifier Feb 21, 2022
6472bed
Bump version.
dubiousdavid Feb 21, 2022
bb1228c
Merge branch 'feature/performant-compactMap' of github.com:smartprocu…
dubiousdavid Feb 21, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions CHANGELOG.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
# 1.69.1
- More performant version of `compactMap`.

# 1.69.0
- Add `isPromise` utility

Expand Down
5 changes: 2 additions & 3 deletions package.json
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "futil-js",
"version": "1.69.0",
"version": "1.69.1",
"description": "F(unctional) util(ities). Resistance is futile.",
"main": "lib/futil-js.js",
"scripts": {
Expand Down Expand Up @@ -41,8 +41,7 @@
"trailingComma": "es5"
},
"devDependencies": {
"babel": "^6.5.2",
"babel-cli": "^6.22.2",
"babel-cli": "^6.26.0",
Comment thread
warrenv marked this conversation as resolved.
"babel-core": "^6.22.1",
"babel-eslint": "^8.0.0",
"babel-loader": "^7.0.0",
Expand Down
17 changes: 14 additions & 3 deletions src/collection.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,17 @@ export let insertAtIndex = _.curry((index, val, collection) =>
: insertAtArrayIndex(index, val, collection)
)

export let compactMap = _.curry((fn, collection) =>
_.flow(_.map(fn), _.compact)(collection)
)
export let compactMap = _.curry((iteratee, collection) => {

@daedalus28 daedalus28 Feb 22, 2022

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Can we do a quick benchmark? Lodash supports shortcut fusion which should be effectively the same thing. My first feedback was gonna be to do this with transducers https://runkit.com/daedalus28/transducer-example but lodash does this automatically in some cases - might only be only explicit chain calls though.

@dubiousdavid dubiousdavid Feb 22, 2022

Copy link
Copy Markdown
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Fusion is only supported in the chain scenario. https://lodash.com/docs/4.17.15#lodash

let fn = _.iteratee(iteratee)
return _.reduce(
(acc, x) => {
let v = fn(x)
if (v) {
acc.push(v)
}
return acc
},
[],
collection
)
})