Group by data by key and return a new object containing the sum value of another key
0
I have data like that:
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
Now I want to group by data by day and get the sum of key count so obtain an array of objects like that:
const newData = [
day: '2018-11-12', countSum: 5, // sum of name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12', name: 'alice', colors: [blue'], count: 2, day: '2018-11-12', name: 'bob', colors: , count: 1, day: '2018-11-12', name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12'
day: '2018-12-12', countSum: 1,
day: '2018-11-11', countSum: 2, // sum of name: 'bob', colors: [blue'], count: 1, day: '2018-11-11', name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11'
day: '2018-11-10', countSum: 1,
day: '2018-11-01', countSum: 3,
day: '2017-11-12', countSum: 1,
]
I tried to use groupBy of Lodash to group data by day but I can't to count the sum of count key.
I need help.
Thanks a lot
javascript lodash
edited Nov 12 at 12:25
Peter Bode
1358
asked Nov 12 at 12:13
Carl Rouge
1198
add a comment |
0
I have data like that:
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
Now I want to group by data by day and get the sum of key count so obtain an array of objects like that:
const newData = [
day: '2018-11-12', countSum: 5, // sum of name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12', name: 'alice', colors: [blue'], count: 2, day: '2018-11-12', name: 'bob', colors: , count: 1, day: '2018-11-12', name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12'
day: '2018-12-12', countSum: 1,
day: '2018-11-11', countSum: 2, // sum of name: 'bob', colors: [blue'], count: 1, day: '2018-11-11', name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11'
day: '2018-11-10', countSum: 1,
day: '2018-11-01', countSum: 3,
day: '2017-11-12', countSum: 1,
]
I tried to use groupBy of Lodash to group data by day but I can't to count the sum of count key.
I need help.
Thanks a lot
javascript lodash
edited Nov 12 at 12:25
Peter Bode
1358
asked Nov 12 at 12:13
Carl Rouge
1198
add a comment |
0
0
0
I have data like that:
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
Now I want to group by data by day and get the sum of key count so obtain an array of objects like that:
const newData = [
day: '2018-11-12', countSum: 5, // sum of name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12', name: 'alice', colors: [blue'], count: 2, day: '2018-11-12', name: 'bob', colors: , count: 1, day: '2018-11-12', name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12'
day: '2018-12-12', countSum: 1,
day: '2018-11-11', countSum: 2, // sum of name: 'bob', colors: [blue'], count: 1, day: '2018-11-11', name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11'
day: '2018-11-10', countSum: 1,
day: '2018-11-01', countSum: 3,
day: '2017-11-12', countSum: 1,
]
I tried to use groupBy of Lodash to group data by day but I can't to count the sum of count key.
I need help.
Thanks a lot
javascript lodash
edited Nov 12 at 12:25
Peter Bode
1358
asked Nov 12 at 12:13
Carl Rouge
1198
I have data like that:
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
Now I want to group by data by day and get the sum of key count so obtain an array of objects like that:
const newData = [
day: '2018-11-12', countSum: 5, // sum of name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12', name: 'alice', colors: [blue'], count: 2, day: '2018-11-12', name: 'bob', colors: , count: 1, day: '2018-11-12', name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12'
day: '2018-12-12', countSum: 1,
day: '2018-11-11', countSum: 2, // sum of name: 'bob', colors: [blue'], count: 1, day: '2018-11-11', name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11'
day: '2018-11-10', countSum: 1,
day: '2018-11-01', countSum: 3,
day: '2017-11-12', countSum: 1,
]
I tried to use groupBy of Lodash to group data by day but I can't to count the sum of count key.
I need help.
Thanks a lot
javascript lodash
javascript lodash
edited Nov 12 at 12:25
Peter Bode
1358
asked Nov 12 at 12:13
Carl Rouge
1198
edited Nov 12 at 12:25
Peter Bode
1358
asked Nov 12 at 12:13
Carl Rouge
1198
edited Nov 12 at 12:25
Peter Bode
1358
edited Nov 12 at 12:25
Peter Bode
1358
edited Nov 12 at 12:25
Peter Bode
1358
1358
asked Nov 12 at 12:13
Carl Rouge
1198
asked Nov 12 at 12:13
Carl Rouge
1198
asked Nov 12 at 12:13
Carl Rouge
1198
1198
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
2
Similar to "Reduce" solution by charlietfl, you can use for..of too.
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))answered Nov 12 at 12:38
Nitish Narang
2,948815
add a comment |
5
You can use Array#reduce() to create an object with the common property value (day) as keys then use Object.values() to return expected array
const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>answered Nov 12 at 12:24
charlietfl
139k1386118
add a comment |
1
Here is a lodash approach. First groupBy day and then map each result of that group, and perform sumBy on each groups by count, That's it
var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
Similar to "Reduce" solution by charlietfl, you can use for..of too.
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))answered Nov 12 at 12:38
Nitish Narang
2,948815
add a comment |
2
Similar to "Reduce" solution by charlietfl, you can use for..of too.
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))answered Nov 12 at 12:38
Nitish Narang
2,948815
add a comment |
2
2
2
Similar to "Reduce" solution by charlietfl, you can use for..of too.
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))answered Nov 12 at 12:38
Nitish Narang
2,948815
Similar to "Reduce" solution by charlietfl, you can use for..of too.
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
];
let result =
for(let d of data)
result[d.day] = result[d.day]
console.log(Object.values(result))answered Nov 12 at 12:38
Nitish Narang
2,948815
answered Nov 12 at 12:38
Nitish Narang
2,948815
answered Nov 12 at 12:38
Nitish Narang
2,948815
answered Nov 12 at 12:38
Nitish Narang
2,948815
2,948815
add a comment |
add a comment |
5
You can use Array#reduce() to create an object with the common property value (day) as keys then use Object.values() to return expected array
const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>answered Nov 12 at 12:24
charlietfl
139k1386118
add a comment |
5
You can use Array#reduce() to create an object with the common property value (day) as keys then use Object.values() to return expected array
const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>answered Nov 12 at 12:24
charlietfl
139k1386118
add a comment |
5
5
5
You can use Array#reduce() to create an object with the common property value (day) as keys then use Object.values() to return expected array
const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>answered Nov 12 at 12:24
charlietfl
139k1386118
You can use Array#reduce() to create an object with the common property value (day) as keys then use Object.values() to return expected array
const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>const counts = data.reduce((a, day, count) =>
a[day] = a[day] ,)
const res = Object.values(counts)
console.log(res)<script>
const data = [
name: 'alice', colors: ['red', 'blue'], count: 1, day: '2018-11-12',
name: 'alice', colors: ['blue'], count: 2, day: '2018-11-12',
name: 'duke', colors: ['red', 'blue'], count: 1, day: '2018-12-12',
name: 'bob', colors: ['blue'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['blue'], count: 1, day: '2018-11-10',
name: 'carl', colors: ['blue'], count: 3, day: '2018-11-01',
name: 'bob', colors: ['red'], count: 1, day: '2017-11-12',
name: 'bob', colors: , count: 1, day: '2018-11-12',
name: 'bob', colors: ['red', 'blue', 'yellow'], count: 1, day: '2018-11-11',
name: 'alice', colors: ['yellow'], count: 2, day: '2018-11-11',
name: 'duke', colors: ['red', 'yellow'], count: 1, day: '2018-11-12',
]
</script>answered Nov 12 at 12:24
charlietfl
139k1386118
edited Nov 12 at 12:34
answered Nov 12 at 12:24
charlietfl
139k1386118
answered Nov 12 at 12:24
charlietfl
139k1386118
answered Nov 12 at 12:24
charlietfl
139k1386118
139k1386118
add a comment |
add a comment |
1
Here is a lodash approach. First groupBy day and then map each result of that group, and perform sumBy on each groups by count, That's it
var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
add a comment |
1
Here is a lodash approach. First groupBy day and then map each result of that group, and perform sumBy on each groups by count, That's it
var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
add a comment |
1
1
1
Here is a lodash approach. First groupBy day and then map each result of that group, and perform sumBy on each groups by count, That's it
var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
Here is a lodash approach. First groupBy day and then map each result of that group, and perform sumBy on each groups by count, That's it
var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>var data = ["name":"alice","colors":["red","blue"],"count":1,"day":"2018-11-12","name":"duke","colors":["red","blue"],"count":1,"day":"2018-12-12","name":"bob","colors":["blue"],"count":1,"day":"2018-11-11","name":"alice","colors":["blue"],"count":1,"day":"2018-11-10","name":"carl","colors":["blue"],"count":3,"day":"2018-11-01","name":"bob","colors":["red"],"count":1,"day":"2017-11-12","name":"bob","colors":,"count":1,"day":"2018-11-12","name":"bob","colors":["red","blue","yellow"],"count":1,"day":"2018-11-11","name":"alice","colors":["yellow"],"count":2,"day":"2018-11-11","name":"duke","colors":["red","yellow"],"count":1,"day":"2018-11-12"];
var res =_(data)
.groupBy('day')
.map((grp, day) => (day, countSum: _.sumBy(grp, 'count')))
.value();
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
edited Nov 12 at 16:37
answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
answered Nov 12 at 16:32
Koushik Chatterjee
2,73731024
2,73731024
add a comment |
add a comment |
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