source stringlengths 14 113 | code stringlengths 10 21.3k |
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application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let concatArray : collections.ConcatArray<number> = new collections.Array<number>(1, 2, 4);
console.info("Element at index 1: ", concatArray[1]); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let concatArray : collections.ConcatArray<string> = new collections.Array<string>('a', 'b', 'c');
let joinedString = concatArray.join('-'); // "a-b-c" is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let concatArray : collections.ConcatArray<number> = new collections.Array<number>(1, 2, 3, 4, 5);
let slicedArray = concatArray.slice (1, 3); // [2, 3] is returned. The original array remains unchanged. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arrayPara = [1,2,3];
let array = new collections.Array<number>(...arrayPara); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = collections.Array.create<number>(3, 10); // [10, 10, 10] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example:
let array: Array<string> = ['str1', 'str2', 'str3']; // Native Array<T>, where T is the sendable data type.
let sendableArray = collections.Array.from<string>(array); // Returns Sendable Array<T>. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
let array: Array<Array<string>> = [['str1', 'str2', 'str3'], ['str4', 'str5', 'str6'], ['str7', 'str8', 'str9']]; // Native Array<T>, where T is a non-sendable data type.
let sendableArray = collections.Array.from<Array<string>>(array); // Prints the following exception information: Parameter error... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example:
const mapper = new Map([
['1', 'a'],
['2', 'b'],
]);
let newArray: collections.Array<string> = collections.Array.from(mapper.values());
console.info(newArray.toString());
// Expected output: a,b |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array : Array<number> = [1, 2, 3]; // Native Array<T>, where T is of the Sendable type.
let newarray = collections.Array.from<number>(array, (value, index) => value + index); // Return a new Array<T>.
console.info(newarray.toString());
// Expected output: 1, 3, 5 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array : Array<number> = [1, 2, 3]; // Native Array<T>
let newarray = collections.Array.from<number, string>(array, (value, index) => value + "." + index); // Return a new Array<T>.
console.info(newarray.toString());
// Expected output: 1.0, 2.1, 3.2 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arr: collections.Array<string> = new collections.Array('a', 'b', 'c', 'd');
let result: boolean = collections.Array.isArray(arr);
console.info(result + '');
// Expected output: true |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arr: collections.Array<string> = collections.Array.of('a', 'b', 'c', 'd');
console.info(arr.toString());
// Expected output: a, b, c, d |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array: collections.Array<number> = collections.Array.from([1, 2, 3, 4, 5, 6, 7, 8]);
let copied: collections.Array<number> = array.copyWithin(3, 1, 3);
console.info(copied.toString());
// Expected output: 1, 2, 3, 2, 3, 6, 7, 8 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array: collections.Array<number> = collections.Array.from([3, 5, 9]);
console.info(array.lastIndexOf(3) + '');
// Expected output: 0
console.info(array.lastIndexOf(7) + '');
// Expected output: -1
console.info(array.lastIndexOf(9, 2) + '');
// Expected output: 2
console.info(array.lastIndexOf(9, -2) + '');
// Expec... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let newArray: collections.Array<number> = collections.Array.from([-10, 20, -30, 40, -50]);
console.info(newArray.some((element: number) => element < 0) + '');
// Expected output: true |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let reducedValue = array.reduceRight((accumulator, value) => accumulator + value); // Accumulated result of all elements.
console.info(reducedValue + '');
// Expected output: 15 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // An accumulator with the initial value 0 is used. The accumulator is used to calculate the sum of all elements in the array and return the sum.
let array = new collections.Array<number>(1, 2, 3, 4, 5);
let reducedValue = array.reduceRight<number>((accumulator: number, value: number) => accumulator + value, 0); // Acc... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3);
let lastElement = array.pop(); // 3 is returned. The array changes to [1, 2]. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3);
let length = array.push (4, 5); // 5 is returned. The array changes to [1, 2, 3, 4, 5]. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<string>('a', 'b', 'c');
let joinedString = array.join('-'); // "a-b-c" is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3);
let firstElement = array.shift(); // 1 is returned. The array changes to [2, 3]. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let reversed = array.reverse();
console.info(array.toString());
// Expected output: 5, 4, 3, 2, 1 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3);
let newLength = array.unshift(0); // 4 is returned. The array changes to [0, 1, 2, 3]. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let stringArray = array.toString();
console.info(stringArray);
// Expected output: 1,2,3,4,5 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let slicedArray = array.slice (1, 3); // [2, 3] is returned. The original array remains unchanged. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 3, 5, 4, 2);
array.sort((a: number, b: number) => a - b); // [1, 2, 3, 4, 5]
array.sort((a: number, b: number) => b - a); // [5, 4, 3, 2, 1] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<string>('a', 'b', 'c');
let index = array.indexOf('b'); // 1 is returned because 'b' is at index 1. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<string>('a', 'b', 'c');
array.forEach((value, index, array) => {
console.info(`Element ${value} at index ${index}`);
}); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Convert each string element in the original array to uppercase and return a new array containing the new strings.
let array = new collections.Array<string>('a', 'b', 'c');
let mappedArray = array.map((value, index, array) => {
return value.toUpperCase(); // Convert each string element to uppercase.
});
console.inf... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let filteredArray = array.filter((value: number) => value % 2 === 0); // [2, 4] is returned. This new array contains only even numbers. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let reducedValue = array.reduce((accumulator, value) => accumulator + value); // 15, which is the final accumulated result of all elements, is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // An accumulator with the initial value 0 is used. The accumulator is used to calculate the sum of all elements in the array and return the sum.
let array = new collections.Array(1, 2, 3, 4, 5);
let reducedValue = array.reduce<number>((accumulator: number, value: number) => accumulator + value, 0); // 15, which is the... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let elementAtIndex = array.at(2); // 3 is returned. This is because the index starts from 0. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let iterator = array.entries();
console.info(iterator.next().value); // [0, 1], key-value pair of the first element is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let iterator = array.keys();
for (const key of iterator) {
console.info("" + key); // 0, 1, 2, 3, and 4 are returned in sequence.
} |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let iterator = array.values();
for(const value of iterator) {
console.info("" + value); // 1, 2, 3, 4, and 5 are returned in sequence.
} |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let foundValue = array.find((value: number) => value % 2 === 0); // 2, the first even element, is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let includesResult = array.includes(3); // true is returned, because the array contains 3. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let foundIndex = array.findIndex((value: number) => value % 2 === 0); // 1 is returned, because 2 is the first even element. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array(1, 2, 3, 4, 5);
array.fill(0, 1, 3); // [1, 0, 0, 4, 5] is returned, because elements in the index range from 1 to 3 are filled with 0. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array1 = new collections.Array(1, 2, 3, 4, 5);
array1.shrinkTo(1); // The array is changed to [1].
let array2 = new collections.Array(1, 2, 3, 4, 5);
array2.shrinkTo(10); // The array remains unchanged. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array1 = new collections.Array(1, 2, 3);
array1.extendTo (5, 10); // The array is changed to [1, 2, 3, 10, 10].
let array2 = new collections.Array(1, 2, 3);
array2.extendTo (1, 10); // The array remains unchanged. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array(1, 2, 3);
let array1 = new collections.Array(4, 5, 6);
let array2 = new collections.Array(7, 8, 9);
let concatArray = array.concat(array1, array2); // The concatenated array is [1, 2, 3, 4, 5, 6, 7, 8, 9]. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 3, 4, 5);
let removeArray = array.splice(2); // The array is changed to [1, 2], and [3, 4, 5] is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let newArray: collections.Array<number> = collections.Array.from([-10, 20, -30, 40, -50]);
console.info(newArray.every((element: number) => element > 0) + '');
// Expected output: false |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // The system where the application is running is set to the French locale.
let array = new collections.Array<number | string>(1000, 'Test', 53621);
let stringArray = array.toLocaleString();
console.info(stringArray);
// Expected output: 1,000,Test,53,621 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 1:
let array = new collections.Array<number>(1, 2, 3, 4, 5);
let removeArray = array.splice(2, 2); // The array is changed to [1, 2, 5], and [3, 4] is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 2:
let array = new collections.Array<number>(1, 2, 3, 4, 5);
let removeArray = array.splice(2, 2, 6, 7, 8); // The array is changed to [1, 2, 6, 7, 8, 5], and [3, 4] is returned. |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array= new collections.Array<number>(1, 2, 3, 4);
for (let item of array) {
console.info(`value : ${item}`);
} |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Array<number>(1, 2, 4);
console.info("Element at index 1: ", array[1]); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example 1:
const myMap = new collections.Map<number, number>(); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example 2:
const myMap = new collections.Map<number, string>([
[1, "one"],
[2, "two"],
[3, "three"],
]); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
@Sendable
class SharedClass {
constructor() {
}
}
let sObj = new SharedClass();
const myMap1: collections.Map<number, SharedClass> = new collections.Map<number, SharedClass>([[1, sObj]]);
// Type arguments of generic "Sendable" type must be a "Sendable" data type (arkts-sendable-generic-types)
... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 1:
const myMap = new collections.Map<number, string>([
[0, "foo"],
[1, "bar"]
]);
const iterator = myMap.entries();
// Expected output: [0, "foo"]
console.info(iterator.next().value);
// Expected output: [1, "bar"]
console.info(iterator.next().value); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 2:
const myMap: collections.Map<number, string> = new collections.Map<number, string>([
[0, "one"],
[1, "two"],
[2, "three"],
[3, "four"]
]);
const entriesIter: IterableIterator<[number, string]> = myMap.entries();
for (const entry of entriesIter) {
if (entry[1].startsWith('t')) {
myMap.delete(... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const myMap = new collections.Map<number, string>([
[0, "foo"],
[1, "bar"]
]);
const iterator = myMap.keys();
// Expected output: 0
console.info(iterator.next().value);
// Expected output: 1
console.info(iterator.next().value); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const myMap = new collections.Map<number, string>([
[0, "foo"],
[1, "bar"]
]);
const iterator = myMap.values();
// Expected output: "foo"
console.info(iterator.next().value);
// Expected output: "bar"
console.info(iterator.next().value); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const myMap = new collections.Map<number, string>([
[0, "foo"],
[1, "bar"]
]);
// Expected output: 2
console.info("size:" + myMap.size);
myMap.clear();
// Expected output: 0
console.info("size:" + myMap.size); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const myMap = new collections.Map<string, string>([
["hello", "world"],
]);
// Expected result: true
console.info("result:" + myMap.delete("hello"));
// Expected result: false
console.info("result:" + myMap.has("hello"));
// Expected result: false
console.info("result:" + myMap.delete("hello")); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example:
new collections.Map<string, number>([
['foo', 0],
['bar', 1],
['baz', 2],
]).forEach((value, key, map) => {
console.info(`m[${key}] = ${value}`);
}); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
new collections.Map<string, number>([
['foo', 0],
['bar', 1],
['baz', 2],
]).forEach((value, key, map) => {
// Throw exception `Concurrent modification exception.`
map.delete(key);
}); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const myMap = new collections.Map<string, string>([
["hello", "world"],
]);
// Expected output: "world"
console.info(myMap.get("hello"));
// Expected output: undefined
console.info(myMap.get("world")); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const myMap = new collections.Map<string, string>([
["hello", "world"],
]);
// Expected output: true
console.info("result:" + myMap.has("hello"));
// Expected output: false
console.info("result:" + myMap.has("world")); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example:
const myMap = new collections.Map<string, string>();
myMap.set("foo", "bar") |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
let obj = new Object();
const myMap: collections.Map<string, Object> = new collections.Map<string, Object>();
// Type arguments of generic "Sendable" type must be a "Sendable" data type (arkts-sendable-generic-types)
myMap.set("foo", obj); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let map = new collections.Map<number, string>([
[0, "one"],
[1, "two"],
[2, "three"],
[3, "four"]
]);
let keys = Array.from(map.keys());
for (let key of keys) {
console.info("key:" + key);
console.info("value:" + map.get(key));
} |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example 1:
const mySet = new collections.Set<number>(); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example 2:
const mySet = new collections.Set<number>([1, 2, 3, 4, 5]); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
@Sendable
class SharedClass {
constructor() {
}
}
let sObj = new SharedClass();
const mySet1: collections.Set<number|SharedClass> = new collections.Set<number|SharedClass>([1, sObj]);
// Type arguments of generic "Sendable" type must be a "Sendable" data type (arkts-sendable-generic-types)
let... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const mySet = new collections.Set<number>([0, 1, 2, 3]);
const iterator = mySet.entries();
// Expected output: [0, 0]
console.info(iterator.next().value);
// Expected output: [1, 1]
console.info(iterator.next().value); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const mySet = new collections.Set<number>([0, 1, 2, 3]);
const iterator = mySet.keys();
// Expected output: 0
console.info(iterator.next().value);
// Expected output: 1
console.info(iterator.next().value); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 1:
const mySet = new collections.Set<number>([0, 1, 2, 3]);
const iterator = mySet.values();
// Expected output: 0
console.info(iterator.next().value);
// Expected output: 1
console.info(iterator.next().value); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 2:
const mySet = new collections.Set<number>([0, 1, 2, 3]);
const valueIter = mySet.values();
for (let value of valueIter) {
if (value % 2 == 0) {
mySet.delete(value);
}
}
// Expected output: 2
console.info("size:" + mySet.size); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const mySet = new collections.Set<number>([0, 1]);
// Expected output: 2
console.info("size:" + mySet.size);
mySet.clear();
// Expected output: 0
console.info("size:" + mySet.size); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const mySet = new collections.Set<string>(["hello", "world"]);
// Expected result: true
console.info("result:" + mySet.delete("hello"));
// Expected result: false
console.info("result:" + mySet.has("hello"));
// Expected result: false
console.info("result:" + mySet.delete("hello")); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example:
new collections.Set<string>(['foo', 'bar', 'baz']).forEach((value1, value2, set) => {
console.info(`s[${value1}] = ${value2}`);
}); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
new collections.Set<string>(['foo', 'bar', 'baz']).forEach((value1, value2, set) => {
// Throw exception `Concurrent modification exception.`
set.delete(value1);
}); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | const mySet = new collections.Set<string>(["hello", "world"]);
// Expected output: true
console.info("result:" + mySet.has("hello"));
// Expected output: true
console.info("result:" + mySet.has("world")); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Positive example:
const mySet: collections.Set<string> = new collections.Set<string>();
mySet.add("foo"); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Negative example:
let obj = new Object();
const mySet: collections.Set<Object> = new collections.Set<Object>();
// Type arguments of generic "Sendable" type must be a "Sendable" data type (arkts-sendable-generic-types)
mySet.add(obj); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let set = new collections.Set<number>([1, 2, 3, 4, 5]);
let val: Array<number> = Array.from(set.values());
for (let item of val) {
console.info("value: " + item);
} |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arrayBuffer: collections.ArrayBuffer = new collections.ArrayBuffer(10);
console.info("byteLength: " + arrayBuffer.byteLength); // byteLength: 10 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arrayBuffer: collections.ArrayBuffer = new collections.ArrayBuffer(10);
let slicedBuffer: collections.ArrayBuffer = arrayBuffer.slice(0, 4);
console.info("byteLength: " + slicedBuffer.byteLength); // byteLength: 4 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let int8Array: collections.Int8Array = new collections.Int8Array();
let uint8Array: collections.Uint8Array = new collections.Uint8Array();
let int16Array: collections.Int16Array = new collections.Int16Array();
let uint16Array: collections.Uint16Array = new collections.Uint16Array();
let int32Array: collections.Int32Arr... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Construct an object with the length parameter.
let int8Array: collections.Int8Array = new collections.Int8Array(12);
let uint8Array: collections.Uint8Array = new collections.Uint8Array(12);
let int16Array: collections.Int16Array = new collections.Int16Array(12);
let uint16Array: collections.Uint16Array = new collect... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 1: Construct an object from an array-like object.
let arrayLike = [1, 3, 5];
let array: collections.Uint32Array = new collections.Uint32Array(arrayLike); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 2: Construct an object from an ArkTS TypedArray.
let arrayBuffer: collections.ArrayBuffer = new collections.ArrayBuffer(12);
let array: collections.Uint32Array = new collections.Uint32Array(arrayBuffer); |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 3: Construct an object from another ArkTS TypedArray.
let arrayLike = [1, 3, 5];
let uint8Array: collections.Uint8Array = new collections.Uint8Array(arrayLike);
// Uint8Array [1, 3, 5]
let uint32Array: collections.Uint32Array = new collections.Uint32Array(uint8Array);
// Uint32Array [1, 3, 5] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let int32Array: collections.Int32Array = collections.Int32Array.from([1, 2, 3, 4, 5, 6]);
console.info("byteLength: " + int32Array.buffer.byteLength); // byteLength: 24
// Start from the fourth byte of the buffer corresponding to int32Array. The length is 5.
let uint32Array: collections.Uint32Array = new collections.Ui... |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arrayLike = [1, 3, 5];
let array: collections.Uint32Array = collections.Uint32Array.from(arrayLike);
// Uint32Array [1, 3, 5] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 1: Create an ArkTS TypedArray from an object.
let array: collections.Uint32Array = collections.Uint32Array.from<number>(
{ length: 5 }, (v: Object, k: number) => k);
// Uint32Array [0, 1, 2, 3, 4] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 2: Create an ArkTS TypedArray from a string array.
let array: collections.Uint32Array = collections.Uint32Array.from<string>(
["1", "3", "5"], (v: string, k: number) => parseInt(v));
// Uint32Array [1, 3, 5] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 3: Create an ArkTS TypedArray from a string.
let array: collections.Uint32Array = collections.Uint32Array.from<string>(
"12345", (v: string, k: number) => parseInt(v));
// Uint32Array [1, 2, 3, 4, 5] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 1: No mapping function is specified.
let set: Set<number> = new Set<number>([1, 2, 3]);
let array: collections.Uint32Array = collections.Uint32Array.from(set);
// Uint32Array [1, 2, 3] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // Example 2: A mapping function is specified.
let set: Set<number> = new Set<number>([1, 2, 3]);
let array: collections.Uint32Array = collections.Uint32Array.from(
set, (v: number, k: number) => v + k);
// Uint32Array [1, 3, 5] |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let arr: collections.Uint32Array = collections.Uint32Array.of(1, 2, 3, 4);
console.info(arr.toString());
// Expected output: 1,2,3,4 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | let array = new collections.Uint32Array([1, 2, 3, 4, 5]);
let stringArray = array.toString();
console.info(stringArray);
// Expected output: 1,2,3,4,5 |
application-dev\reference\apis-arkts\js-apis-arkts-collections.md | // The system where the application is running is set to the French locale.
let array = new collections.Uint32Array([1000, 2000, 3000]);
let stringArray = array.toLocaleString();
console.info(stringArray);
// Expected output: 1,000,2,000,3,000 |
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