reduce

问题 I am looking at precipitation data (both GPM and CHIRPS) for different provinces in Indonesia using Google Earth Engine. GPM is sub-daily (every 30 minutes) and CHIRPS is daily. I am only interested in getting the monthly values. Unlike here and here I am not interested in getting the multi-annual monthly values, but simply the average of each month and make a time series. Here I found a way to create a list of values containing the mean of each month. Edit: Thanks to Nicholas Clinton's

问题 I have an array of objects that looks like this: "data": [ { "workout_id": 1, "user_id": 1, "shotLocation": 27, "shotAttempts": 20,"shotsMade": 19, "id": 1 }, { "workout_id": 2, "user_id": 1, "shotLocation": 1, "shotAttempts": 10, "shotsMade": 9, "id": 2 }, { "workout_id": 2, "user_id": 1, "shotLocation": 10, "shotAttempts": 10, "shotsMade": 7, "id": 3 }, { "workout_id": 2, "user_id": 1, "shotLocation": 1, "shotAttempts": 30, "shotsMade": 29, "id": 4 }, { "workout_id": 3, "user_id": 5,

问题 I have an array of objects that looks like this: "data": [ { "workout_id": 1, "user_id": 1, "shotLocation": 27, "shotAttempts": 20,"shotsMade": 19, "id": 1 }, { "workout_id": 2, "user_id": 1, "shotLocation": 1, "shotAttempts": 10, "shotsMade": 9, "id": 2 }, { "workout_id": 2, "user_id": 1, "shotLocation": 10, "shotAttempts": 10, "shotsMade": 7, "id": 3 }, { "workout_id": 2, "user_id": 1, "shotLocation": 1, "shotAttempts": 30, "shotsMade": 29, "id": 4 }, { "workout_id": 3, "user_id": 5,

问题 I have this function that is supposed to run each validator and then return the object that contains errors. Everything seems to work fine, but the first validator in the array. It seems like reduce completely ignores it. No matter what validator I put there, it just goes right over to the second one. Am I missing something obvious here? export default values => ( [ validateFullName, validateServicePresence, validatePhoneField, validateOrganizationName, validateInn, validateEmailField,

问题 I have this function that is supposed to run each validator and then return the object that contains errors. Everything seems to work fine, but the first validator in the array. It seems like reduce completely ignores it. No matter what validator I put there, it just goes right over to the second one. Am I missing something obvious here? export default values => ( [ validateFullName, validateServicePresence, validatePhoneField, validateOrganizationName, validateInn, validateEmailField,

问题 I have this function that is supposed to run each validator and then return the object that contains errors. Everything seems to work fine, but the first validator in the array. It seems like reduce completely ignores it. No matter what validator I put there, it just goes right over to the second one. Am I missing something obvious here? export default values => ( [ validateFullName, validateServicePresence, validatePhoneField, validateOrganizationName, validateInn, validateEmailField,

问题 I have an array like so: [1, 2, 3, 4, 5, 6, 7, 9, 10] . I need to chunk it into different size chunks, yet with a simple pattern of: 4, 3, 3, 3, 4, 3, 3, 3 like so: [ [ // four 1, 2, 3, 4 ], [ // three (1/3) 5, 6, 7 ], [ // three (2/3) 8, 9, 10 ], [ // three (3/3) 11, 12, 13 ], [ // four 14, 15, 16, 17 ], [ // three (1/3) 18, 19, 20 ], // and so on.. ] I have tried with this code I have customized: const arr; // my array of values const chuncked = arr.reduce((acc, product, i) => { if (i % 3)

问题 I have an array like so: [1, 2, 3, 4, 5, 6, 7, 9, 10] . I need to chunk it into different size chunks, yet with a simple pattern of: 4, 3, 3, 3, 4, 3, 3, 3 like so: [ [ // four 1, 2, 3, 4 ], [ // three (1/3) 5, 6, 7 ], [ // three (2/3) 8, 9, 10 ], [ // three (3/3) 11, 12, 13 ], [ // four 14, 15, 16, 17 ], [ // three (1/3) 18, 19, 20 ], // and so on.. ] I have tried with this code I have customized: const arr; // my array of values const chuncked = arr.reduce((acc, product, i) => { if (i % 3)

问题 I have an array like so: [1, 2, 3, 4, 5, 6, 7, 9, 10] . I need to chunk it into different size chunks, yet with a simple pattern of: 4, 3, 3, 3, 4, 3, 3, 3 like so: [ [ // four 1, 2, 3, 4 ], [ // three (1/3) 5, 6, 7 ], [ // three (2/3) 8, 9, 10 ], [ // three (3/3) 11, 12, 13 ], [ // four 14, 15, 16, 17 ], [ // three (1/3) 18, 19, 20 ], // and so on.. ] I have tried with this code I have customized: const arr; // my array of values const chuncked = arr.reduce((acc, product, i) => { if (i % 3)

问题 I am trying to aggregate the same key values into an array by value. so for example I have an array of objects, like so const data = [{foo: true},{foo: false},{bar: true},{buzz: false}] when they get aggregated the array transforms into [ foo: {true: [{foo: true}], false: [{foo: false}]}, bar: {true: [{bar: true}]}, buzz: {false: [{buzz: false}]} ] the array entries is the original object. Now I know the keys that I want to group by.. they are foo, bar, buzz and fizz. But fizz is not part of