What is the best way to divide a single-item object array into three separate objects?

Question

What is the best way to divide a single-item object array into three separate objects?

Here is the data structure for the response data:

const res = {
  data: [{
    name: 'c2',
    ipaddr: '192.168.1.5',
    port: 4435,
    sshuser: "abc",
    sshpass: "xyz",
    sshport: 22,
    license: 'license.txt',
  }],
};

I need to transform it into the following format:

const newState = [{
  name: 'c2',
  ipaddr: '192.168.1.5',
  port: 4435,
}, {
  sshuser: "abc",
  sshpass: "xyz",
  sshport: 22,
}, {
  license: 'license.txt',
}]

The code below successfully achieves the desired outcome:

const newState = [{name: res.data[0].name, ipaddr: res.data[0].ipaddr, port: res.data[0].port},{sshuser: res.data[0].sshuser, sshpass: res.data[0].sshpass, sshport: res.data[0].sshport},{license: res.data[0].license}];

Are there alternative methods to achieve the same result, perhaps with a more concise syntax?

javascript arrays object data-structures destructuring

Answer 1

Answer №1

Great job on your code! It's functional and effective, although I would recommend using const instead of var. Another approach you could consider is using mapping, especially if your original array contains multiple objects. In that case, you might want to explore using .map() instead of .flatMap():

const res = {data: [ {name: 'c2', ipaddr: '192.168.1.5', port: 4435, sshuser: "abc", sshpass: "xyz", sshport: 22, license: 'license.txt'}]};

const newState = res.data.flatMap(({name, ipaddr, port, sshuser, sshpass, sshport, license}) => [
  {name, ipaddr, port}, {sshuser, sshpass, sshport}, {license}
]);

console.log(newState);

Another option is to use object destructuring on your array objects and utilize shorthand property names to create the array of objects:

const res = {data: [ {name: 'c2', ipaddr: '192.168.1.5', port: 4435, sshuser: "abc", sshpass: "xyz", sshport: 22, license: 'license.txt'}]};

const [{name, ipaddr, port, sshuser, sshpass, sshport, license}] = res.data;
const newState = [{name, ipaddr, port}, {sshuser, sshpass, sshport}, {license}];
console.log(newState);

Answer 2

Great job on your code! It's functional and effective, although I would recommend using const instead of var. Another approach you could consider is using mapping, especially if your original array contains multiple objects. In that case, you might want to explore using .map() instead of .flatMap():

const res = {data: [ {name: 'c2', ipaddr: '192.168.1.5', port: 4435, sshuser: "abc", sshpass: "xyz", sshport: 22, license: 'license.txt'}]};

const newState = res.data.flatMap(({name, ipaddr, port, sshuser, sshpass, sshport, license}) => [
  {name, ipaddr, port}, {sshuser, sshpass, sshport}, {license}
]);

console.log(newState);

Another option is to use object destructuring on your array objects and utilize shorthand property names to create the array of objects:

const res = {data: [ {name: 'c2', ipaddr: '192.168.1.5', port: 4435, sshuser: "abc", sshpass: "xyz", sshport: 22, license: 'license.txt'}]};

const [{name, ipaddr, port, sshuser, sshpass, sshport, license}] = res.data;
const newState = [{name, ipaddr, port}, {sshuser, sshpass, sshport}, {license}];
console.log(newState);

Answer 3

Answer №2

No issues arise in the method used to obtain the result in the OP's code example.

An approach centered on object-destructuring and shorthand property-names could be represented by the following code snippet ...

const {
  name, ipaddr, port,
  sshuser, sshpass, sshport,
  license,
} = res.data[0];

const newState = [
  { name, ipaddr, port },
  { sshuser, sshpass, sshport },
  { license },
];
console.log('newState ...', newState);

.as-console-wrapper { min-height: 100%!important; top: 0; }

<script>
  const res = {
    data: [{
      name: 'c2',
      ipaddr: '192.168.1.5',
      port: 4435,
      sshuser: "abc",
      sshpass: "xyz",
      sshport: 22,
      license: 'license.txt',
    }],
  };
</script>

Answer 4

No issues arise in the method used to obtain the result in the OP's code example.

An approach centered on object-destructuring and shorthand property-names could be represented by the following code snippet ...

const {
  name, ipaddr, port,
  sshuser, sshpass, sshport,
  license,
} = res.data[0];

const newState = [
  { name, ipaddr, port },
  { sshuser, sshpass, sshport },
  { license },
];
console.log('newState ...', newState);

.as-console-wrapper { min-height: 100%!important; top: 0; }

<script>
  const res = {
    data: [{
      name: 'c2',
      ipaddr: '192.168.1.5',
      port: 4435,
      sshuser: "abc",
      sshpass: "xyz",
      sshport: 22,
      license: 'license.txt',
    }],
  };
</script>

Answer 5

Answer №3

Your problem-solving approach is always influenced by the underlying goal you want to achieve.

^ Opting for a concise solution may not always be the best choice.

Remember, the length of your code does not always dictate its quality. Code readability is crucial.

If your goal involves transforming an object into an array of objects where each object comprises a selected set of keys from the original object, you can implement a function tailored for this purpose. This function can be reused for varying objects, even those with distinct keys. Here's a sample implementation:

function selectKeys(input, keys) {
  const result = {};
  for (const k of keys) result[k] = input[k];
  return result;
}

function groupKeys(obj, groups) {
  return groups.map((keys) => selectKeys(obj, keys));
}

const data = {
  example: [{
    property1: "value1",
    property2: "value2",
    property3: 123,
    property4: "abc",
  }],
};

const actualResult = groupKeys(
  // Source object
  data.example[0],
  // Keys for each object in the resulting array
  [
    ["property1", "property2", "property3"],
    ["property4"],
  ],
);

const expectedResult = [{
  property1: "value1",
  property2: "value2",
  property3: 123,
}, {
  property4: "abc",
}];

console.log(JSON.stringify(actualResult) === JSON.stringify(expectedResult)); // true

Answer 6

Your problem-solving approach is always influenced by the underlying goal you want to achieve.

^ Opting for a concise solution may not always be the best choice.

Remember, the length of your code does not always dictate its quality. Code readability is crucial.

If your goal involves transforming an object into an array of objects where each object comprises a selected set of keys from the original object, you can implement a function tailored for this purpose. This function can be reused for varying objects, even those with distinct keys. Here's a sample implementation:

function selectKeys(input, keys) {
  const result = {};
  for (const k of keys) result[k] = input[k];
  return result;
}

function groupKeys(obj, groups) {
  return groups.map((keys) => selectKeys(obj, keys));
}

const data = {
  example: [{
    property1: "value1",
    property2: "value2",
    property3: 123,
    property4: "abc",
  }],
};

const actualResult = groupKeys(
  // Source object
  data.example[0],
  // Keys for each object in the resulting array
  [
    ["property1", "property2", "property3"],
    ["property4"],
  ],
);

const expectedResult = [{
  property1: "value1",
  property2: "value2",
  property3: 123,
}, {
  property4: "abc",
}];

console.log(JSON.stringify(actualResult) === JSON.stringify(expectedResult)); // true

What is the best way to divide a single-item object array into three separate objects?

Answer №1

Answer №2

Answer №3

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