source stringlengths 14 113 | code stringlengths 10 21.3k |
|---|---|
application-dev\reference\apis-arkts\js-apis-arkts-utils.md | let pro = new ArkTSUtils.SendableLruCache<number, number>();
let result = pro.put(2, 10);
console.info('result = ' + result);
// Expected output: result = 10 |
application-dev\reference\apis-arkts\js-apis-arkts-utils.md | let pro = new ArkTSUtils.SendableLruCache<number|string,number|string>();
pro.put(2, 10);
pro.put(2, "anhu");
pro.put("afaf", "grfb");
let result = pro.values();
console.info('result = ' + result);
// Expected output: result = anhu,grfb |
application-dev\reference\apis-arkts\js-apis-arkts-utils.md | let pro = new ArkTSUtils.SendableLruCache<number, number>();
pro.put(2, 10);
pro.put(3, 1);
let result = pro.keys();
console.info('result = ' + result);
// Expected output: result = 2,3 |
application-dev\reference\apis-arkts\js-apis-arkts-utils.md | let pro = new ArkTSUtils.SendableLruCache<number, number>();
pro.put(2, 10);
let result = pro.remove(20);
console.info('result = ' + result);
// Expected output: result = undefined |
application-dev\reference\apis-arkts\js-apis-arkts-utils.md | let pro = new ArkTSUtils.SendableLruCache<number, number>();
pro.put(2, 10);
let result = pro.contains(2);
console.info('result = ' + result);
// Expected output: result = true |
application-dev\reference\apis-arkts\js-apis-arkts-utils.md | let pro = new ArkTSUtils.SendableLruCache<number, number>();
pro.put(2, 10);
pro.put(3, 15);
let pair:Iterable<Object[]> = pro.entries();
let arrayValue = Array.from(pair);
for (let value of arrayValue) {
console.info(value[0]+ ', '+ value[1]);
// Expected output:
// 2, 10
// 3, 15
} |
application-dev\reference\apis-arkts\js-apis-arraylist.md | import { ArrayList } from '@kit.ArkTS'; |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<string | number> = new ArrayList(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | class C1 {
name: string = ""
age: string = ""
}
let arrayList: ArrayList<string | number | boolean | Array<number> | C1> = new ArrayList();
let result1 = arrayList.add("a");
let result2 = arrayList.add(1);
let b = [1, 2, 3];
let result3 = arrayList.add(b);
let c : C1 = {name: "Dylan", age: "13"}
let result4 = array... |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number | string | boolean> = new ArrayList();
arrayList.insert("A", 0);
arrayList.insert(0, 1);
arrayList.insert(true, 2); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<string> = new ArrayList();
arrayList.add("squirrel");
let result: boolean = arrayList.has("squirrel"); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(2);
arrayList.add(1);
arrayList.add(2);
arrayList.add(4);
let result: number = arrayList.getIndexOf(2); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(2);
arrayList.add(1);
arrayList.add(2);
arrayList.add(4);
let result: number = arrayList.getLastIndexOf(2); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(2);
arrayList.add(4);
let result: number = arrayList.removeByIndex(2); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: boolean = arrayList.remove(2); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.removeByRange(2, 4); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.replaceAllElements((value: number): number => {
// Add the user operation logic based on the actual scenario.
return value;
}); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.forEach((value: number, index?: number) => {
console.log("value:" + value, "index:" + index);
}); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.sort((a: number, b: number) => a - b);
arrayList.sort((a: number, b: number) => b - a);
arrayList.sort(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: ArrayList<number> = arrayList.subArrayList(2, 4); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.clear(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: ArrayList<number> = arrayList.clone(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: number = arrayList.getCapacity(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: Array<number> = arrayList.convertToArray(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: boolean = arrayList.isEmpty(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
let result: number = arrayList[2]; |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.increaseCapacityTo(2);
arrayList.increaseCapacityTo(8); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
arrayList.trimToCurrentLength(); |
application-dev\reference\apis-arkts\js-apis-arraylist.md | let arrayList: ArrayList<number> = new ArrayList();
arrayList.add(2);
arrayList.add(4);
arrayList.add(5);
arrayList.add(4);
// Method 1:
let numbers: Array<number> = arrayList.convertToArray();
for (let item of numbers) {
console.log(`value : ${item}`);
}
// Method 2:
let iter = arrayList[Symbol.iterator]();
let te... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS'; |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer, JSON } from '@kit.ArkTS';
let buf1 = buffer.alloc(5);
console.info(JSON.stringify(buf1)); // {"type":"Buffer","data":[0,0,0,0,0]}
let buf2 = buffer.alloc(5, 'a');
console.info(JSON.stringify(buf2)); // {"type":"Buffer","data":[97,97,97,97,97]}
let buf3 = buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer, JSON } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(10);
buf.fill(0);
console.info(JSON.stringify(buf)); // {"type":"Buffer","data":[0,0,0,0,0,0,0,0,0,0]} |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer, JSON } from '@kit.ArkTS';
let buf = buffer.allocUninitialized(10);
buf.fill(0);
console.info(JSON.stringify(buf)); // {"type":"Buffer","data":[0,0,0,0,0,0,0,0,0,0]} |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let str = '\u00bd + \u00bc = \u00be';
console.info(`${str}: ${str.length} characters, ${buffer.byteLength(str, 'utf-8')} bytes`);
// Output: ½ + ¼ = ¾: 9 characters, 12 bytes |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from('1234');
let buf2 = buffer.from('0123');
let res = buffer.compare(buf1, buf2);
console.info(Number(res).toString());
// Output: 1 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from("1234");
let buf2 = buffer.from("abcd");
let buf = buffer.concat([buf1, buf2]);
console.info(buf.toString('hex'));
// Output: 3132333461626364 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
console.info(buf.toString('hex'));
// Output: 627566666572 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer, JSON } from '@kit.ArkTS';
let ab = new ArrayBuffer(10);
let buf = buffer.from(ab, 0, 2);
console.info(JSON.stringify(buf)); // {"type":"Buffer","data":[0,0]} |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
// Create a Buffer object of the Buffer type.
let buf1 = buffer.from('buffer');
let buf2 = buffer.from(buf1);
// Create a Buffer object of the Uint8Array type to ensure memory sharing between objects.
let uint8Array = new Uint8Array(10);
let buf3 = buffer.from(uint8Array);
buf3.fi... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer, JSON } from '@kit.ArkTS';
let buf = buffer.from(new String('this is a test'), 'utf8', 14);
console.info(JSON.stringify(buf)); // {"type":"Buffer","data":[116,104,105,115,32,105,115,32,97,32,116,101,115,116]} |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from('this is a test');
let buf2 = buffer.from('7468697320697320612074c3a97374', 'hex');
console.info(buf1.toString());
// Output: this is a test
console.info(buf2.toString());
// Output: this is a tést |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let result = buffer.isBuffer(buffer.alloc(10)); // 10: buffer size
console.info("result = " + result);
// Output: result = true
let result1 = buffer.isBuffer(buffer.from('foo'));
console.info("result1 = " + result1);
// Output: result1 = true
let result2 = buffer.isBuffer('a string... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
console.info(buffer.isEncoding('utf-8').toString());
// Output: true
console.info(buffer.isEncoding('hex').toString());
// Output: true
console.info(buffer.isEncoding('utf/8').toString());
// Output: false
console.info(buffer.isEncoding('').toString());
// Output: false |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let newBuf = buffer.transcode(buffer.from('€'), 'utf-8', 'ascii');
console.info("newBuf = " + newBuf.toString('ascii'));
// Output: newBuf = , |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from("1236");
console.info(JSON.stringify(buf.length));
// Output: 4
let arrayBuffer = buf.buffer;
console.info(JSON.stringify(new Uint8Array(arrayBuffer)));
// Output: {"0":49,"1":50,"2":51,"3":54}
console.info(JSON.stringify(buf.byteOffset));
// Output: 0 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from([1, 2, 3, 4, 5, 6, 7, 8, 9]);
let buf2 = buffer.from([5, 6, 7, 8, 9, 1, 2, 3, 4]);
console.info(buf1.compare(buf2, 5, 9, 0, 4).toString());
// Output: 0
console.info(buf1.compare(buf2, 0, 6, 4).toString());
// Output: -1
console.info(buf1.compare(buf2, 5, 6,... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.allocUninitializedFromPool(26);
let buf2 = buffer.allocUninitializedFromPool(26).fill('!');
for (let i = 0; i < 26; i++) {
buf1.writeInt8(i + 97, i);
}
buf1.copy(buf2, 8, 16, 20);
console.info(buf2.toString('ascii', 0, 25));
// Output: !!!!!!!!qrst!!!!!!!!!!!!... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from('buffer');
let pair = buf.entries();
let next: IteratorResult<Object[]> = pair.next();
while (!next.done) {
console.info("buffer: " + next.value);
/*
Output: buffer: 0,98
buffer: 1,117
buffer: 2,102
buffer: 3,102
... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from('ABC');
let buf2 = buffer.from('414243', 'hex');
let buf3 = buffer.from('ABCD');
console.info(buf1.equals(buf2).toString());
// Output: true
console.info(buf1.equals(buf3).toString());
// Output: false |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let b = buffer.allocUninitializedFromPool(50).fill('h');
console.info(b.toString());
// Output: hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from('this is a buffer');
console.info(buf.includes('this').toString());
// Output: true
console.info(buf.includes('be').toString());
// Output: false |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from('this is a buffer');
console.info(buf.indexOf('this').toString());
// Output: 0
console.info(buf.indexOf('is').toString());
// Output: 2 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from('buffer');
let numbers = Array.from(buf.keys());
for (const key of numbers) {
console.info(key.toString());
/*
Output: 0
1
2
3
4
5
*/
} |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from('this buffer is a buffer');
console.info(buf.lastIndexOf('this').toString());
// Output: 0
console.info(buf.lastIndexOf('buffer').toString());
// Output: 17 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x70,
0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78]);
console.info(buf.readBigInt64BE(0).toString());
// Output: 7161960797921896816
let buf1 = buffer.allocUninitializedFromPool(8);
let result = buf1.writeBigInt6... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x70,
0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78]);
console.info(buf.readBigUInt64BE(0).toString());
// Output: 7161960797921896816
let buf1 = buffer.allocUninitializedFromPool(8);
let result = buf1.writeBigUIn... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x70,
0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78]);
console.info(buf.readBigUInt64BE(0).toString());
// Output: 7161960797921896816
let buf1 = buffer.allocUninitializedFromPool(8);
let result = buf1.writeBigUInt... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x70,
0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78]);
console.info(buf.readBigUInt64LE(0).toString());
// Output: 8100120198111388771
let buf1 = buffer.allocUninitializedFromPool(8);
let result = buf1.writeBigUIn... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
console.info(buf.readDoubleBE(0).toString());
// Output: 8.20788039913184e-304
let buf1 = buffer.allocUninitializedFromPool(8);
let result = buf1.writeDoubleBE(123.456, 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
console.info(buf.readDoubleLE(0).toString());
// Output: 5.447603722011605e-270
let buf1 = buffer.allocUninitializedFromPool(8);
let result = buf1.writeDoubleLE(123.456, 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
console.info(buf.readFloatBE(0).toString());
// Output: 2.387939260590663e-38
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeFloatBE(0xcabcbcbc, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
console.info(buf.readFloatLE(0).toString());
// Output: 1.539989614439558e-36
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeFloatLE(0xcabcbcbc, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([-1, 5]);
console.info(buf.readInt8(0).toString());
// Output: 0
console.info(buf.readInt8(1).toString());
// Output: 5
let buf1 = buffer.allocUninitializedFromPool(2);
let result = buf1.writeInt8(0x12);
console.info("result = " + result);
// Output: result = ... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0, 5]);
console.info(buf.readInt16BE(0).toString());
// Output: 5
let buf1 = buffer.alloc(2);
let result = buf1.writeInt16BE(0x1234, 0);
console.info("result = " + result);
// Output: result = 2 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0, 5]);
console.info(buf.readInt16LE(0).toString());
// Output: 1280
let buf1 = buffer.alloc(2);
let result = buf1.writeInt16BE(0x1234, 0);
console.info("result = " + result);
// Output: result = 2 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0, 0, 0, 5]);
console.info(buf.readInt32BE(0).toString());
// Output: 5
let buf1 = buffer.alloc(4);
let result = buf1.writeInt32BE(0x12345678, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0, 0, 0, 5]);
console.info(buf.readInt32LE(0).toString());
// Output: 83886080
let buf1 = buffer.alloc(4);
let result = buf1.writeInt32BE(0x12345678, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from("ab");
let num = buf.readIntBE(0, 1);
console.info(num.toString());
// Output: 97
let buf1 = buffer.allocUninitializedFromPool(6);
let result = buf1.writeIntBE(0x123456789011, 0, 6);
console.info("result = " + result);
// Output: result = 6 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
console.info(buf.readIntLE(0, 6).toString(16));
// Output: -546f87a9cbee
let buf1 = buffer.allocUninitializedFromPool(6);
let result = buf1.writeIntLE(0x123456789011, 0, 6);
console.info("result = " + result);
// Output: ... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([1, -2]);
console.info(buf.readUInt8(0).toString());
// Output: 1
console.info(buf.readUInt8(1).toString());
// Output: 0
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUInt8(0x42);
console.info("result = " + result);
// Output: result... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56]);
console.info(buf.readUInt16BE(0).toString(16));
// Output: 1234
console.info(buf.readUInt16BE(1).toString(16));
// Output: 3456
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUInt16BE(0x1234, 0);
console.info("resu... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56]);
console.info(buf.readUInt16LE(0).toString(16));
// Output: 3412
console.info(buf.readUInt16LE(1).toString(16));
// Output: 5634
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUInt16LE(0x1234, 0);
console.info("resu... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56, 0x78]);
console.info(buf.readUInt32BE(0).toString(16));
// Output: 12345678
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUInt32BE(0x12345678, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56, 0x78]);
console.info(buf.readUInt32LE(0).toString(16));
// Output: 78563412
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUInt32LE(0x12345678, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
console.info(buf.readUIntBE(0, 6).toString(16));
// Output: 1234567890ab
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUIntBE(0x13141516, 0, 4);
console.info("result = " + result);
// Output: res... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
console.info(buf.readUIntLE(0, 6).toString(16));
// Output: ab9078563412
let buf1 = buffer.allocUninitializedFromPool(4);
let result = buf1.writeUIntLE(0x13141516, 0, 4);
console.info("result = " + result);
// Output: res... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.allocUninitializedFromPool(26);
for (let i = 0; i < 26; i++) {
buf1.writeInt8(i + 97, i);
}
const buf2 = buf1.subarray(0, 3);
console.info(buf2.toString('ascii', 0, buf2.length));
// Output: abc |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
console.info(buf1.toString('hex'));
// Output: 0102030405060708
buf1.swap16();
console.info(buf1.toString('hex'));
// Output: 0201040306050807 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
console.info(buf1.toString('hex'));
// Output: 0102030405060708
buf1.swap32();
console.info(buf1.toString('hex'));
// Output: 0403020108070605 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
console.info(buf1.toString('hex'));
// Output: 0102030405060708
buf1.swap64();
console.info(buf1.toString('hex'));
// Output: 0807060504030201 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from([0x1, 0x2, 0x3, 0x4, 0x5]);
let obj = buf1.toJSON();
console.info(JSON.stringify(obj));
// Output: {"type":"Buffer","data":[1,2,3,4,5]} |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.allocUninitializedFromPool(26);
for (let i = 0; i < 26; i++) {
buf1.writeInt8(i + 97, i);
}
console.info(buf1.toString('utf-8'));
// Output: abcdefghijklmnopqrstuvwxyz |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf1 = buffer.from('buffer');
let pair = buf1.values();
let next:IteratorResult<number> = pair.next();
while (!next.done) {
console.info(next.value.toString());
/*
Output: 98
117
102
102
101
114
*/
next = pair.nex... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.alloc(256);
let len = buf.write('\u00bd + \u00bc = \u00be', 0);
console.info(`${len} bytes: ${buf.toString('utf-8', 0, len)}`);
// Output: 12 bytes: ½ + ¼ = ¾
let buffer1 = buffer.alloc(10);
let length = buffer1.write('abcd', 8);
console.info("length = " + length)... |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeBigInt64BE(BigInt(0x0102030405060708), 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeBigInt64LE(BigInt(0x0102030405060708), 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeBigUInt64BE(BigInt(0xdecafafecacefade), 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeBigUInt64LE(BigInt(0xdecafafecacefade), 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeDoubleBE(123.456, 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeDoubleLE(123.456, 0);
console.info("result = " + result);
// Output: result = 8 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeFloatBE(0xcafebabe, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(8);
let result = buf.writeFloatLE(0xcafebabe, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(2);
let result = buf.writeInt8(2, 0);
console.info("result = " + result);
// Output: result = 1
let result1 = buf.writeInt8(-2, 1);
console.info("result1 = " + result1);
// Output: result1 = 2 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(2);
let result = buf.writeInt16BE(0x0102, 0);
console.info("result = " + result);
// Output: result = 2 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(2);
let result = buf.writeInt16LE(0x0304, 0);
console.info("result = " + result);
// Output: result = 2 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(4);
let result = buf.writeInt32BE(0x01020304, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(4);
let result = buf.writeInt32LE(0x05060708, 0);
console.info("result = " + result);
// Output: result = 4 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(6);
let result = buf.writeIntBE(0x1234567890ab, 0, 6);
console.info("result = " + result);
// Output: result = 6 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(6);
let result = buf.writeIntLE(0x1234567890ab, 0, 6);
console.info("result = " + result);
// Output: result = 6 |
application-dev\reference\apis-arkts\js-apis-buffer.md | import { buffer } from '@kit.ArkTS';
let buf = buffer.allocUninitializedFromPool(4);
let result = buf.writeUInt8(0x3, 0);
console.info("result = " + result);
// Output: result = 1
let result1 = buf.writeUInt8(0x4, 1);
console.info("result1 = " + result1);
// Output: result1 = 2
let result2 = buf.writeUInt8(0x23, 2);
c... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.