@ -2,18 +2,20 @@
### Instructions
This exercise consists in creating curry functions to apply in the object's entries.
You will have to create the following curry functions:
You're going to create some curry functions, to apply to the object's entries.
- `defaultCurry` curries two objects in which the second object overrides the values of the first. If the key is not present then add it with the corresponding value .
Create `defaultCurry` , which curries two objects. It mergers the objects together. If the key exists in both objects, the value from the second object override the value from the first object .
```js
defaultCurry({
http: 403,
connection: 'close',
contentType: 'multipart/form-data',
})({ http: 200, connection: 'open', requestMethod: 'GET' })
})({
http: 200,
connection: 'open',
requestMethod: 'GET'
})
// output
{
http: 200,
@ -24,7 +26,7 @@ defaultCurry({
```
- `mapCurry` replicates function `.map` , where first entry is a function, second is an object.
Create `mapCurry` , which replicates function `.map` (but for an object). The first entry is the function, and the second entry is the object.
```js
mapCurry(([k, v]) => [`${k}_force`, v])(personnel)
@ -38,7 +40,7 @@ mapCurry(([k, v]) => [`${k}_force`, v])(personnel)
}
```
- `reduceCurry` replicates function `.reduce` , where first entry is function, second is (object, initial value).
Create `reduceCurry` , which replicates the `.reduce` method (but fro an object). The first entry is the function, and the second is the object and initial value).
```js
reduceCurry((acc, [k, v]) => (acc += v))({ a: 1, b: 2, c: 3 }, 0)
@ -46,7 +48,7 @@ reduceCurry((acc, [k, v]) => (acc += v))({ a: 1, b: 2, c: 3 }, 0)
6
```
- `filterCurry` replicates function `.filter` , where first entry is function, second is object.
Create `filterCurry` which replicates the `.filter` method (but for an object). The first entry is the function, and the second is an object.
```js
filterCurry(([k, v]) => typeof v === 'string' || k === 'arr')({
@ -60,25 +62,14 @@ filterCurry(([k, v]) => typeof v === 'string' || k === 'arr')({
Using each curry function create the following functions with a parameter `personnel` :
- `reduceScore` that will return the total value of the scores
of the persons who use the force (this function can have one additional parameter)
- `filterForce` that will return the force users with `shootingScores`
equal or higher than 80
- `mapAverage` that will return a new object with the propriety `averageScore`
that is the average of the scores for each person
### Notions
- [devdocs.io/javascript/global_objects/array/filter ](https://devdocs.io/javascript/global_objects/array/filter )
- [devdocs.io/javascript/global_objects/array/map ](https://devdocs.io/javascript/global_objects/array/map )
- [devdocs.io/javascript/global_objects/array/reduce ](https://devdocs.io/javascript/global_objects/array/reduce )
- [devdocs.io/javascript/global_objects/object/entries ](https://devdocs.io/javascript/global_objects/object/entries )
- [devdocs.io/javascript/global_objects/object/fromentries ](https://devdocs.io/javascript/global_objects/object/fromentries )
- [stackoverflow.com/questions/36314/what-is-currying ](https://stackoverflow.com/questions/36314/what-is-currying )
- `reduceScore` : that will return the total value of the scores
of the people who use the force. (this function can have one additional parameter).
- `filterForce` : that will return the force users with `shootingScores` equal to or higher than 80.
- `mapAverage` : that will return a new object with the property `averageScore` , that is the average of the scores for each person.
### Code provided
> all code provided will be added to your solution and doesn't need to be submi ted.
> The provided code will be added to your solution, and does not need to be submitted.
```js
// prettier-ignore
@ -90,3 +81,12 @@ const personnel = {
calebDume: { id: 11, pilotingScore: 71, shootingScore: 85, isForceUser: true },
}
```
### Notions
- [filter ](https://devdocs.io/javascript/global_objects/array/filter )
- [map ](https://devdocs.io/javascript/global_objects/array/map )
- [reduce ](https://devdocs.io/javascript/global_objects/array/reduce )
- [entries ](https://devdocs.io/javascript/global_objects/object/entries )
- [fromentries ](https://devdocs.io/javascript/global_objects/object/fromentries )
- [stackoverflow what-is-currying? ](https://stackoverflow.com/questions/36314/what-is-currying )