Calls back an asynchronous function. In the callback, the first parameter indicates the cause of the rejection (the value is **null** if the promise has been resolved), and the second parameter indicates the resolved value.
Calls back an asynchronous function. In the callback, the first parameter indicates the cause of the rejection (the value is **null** if the promise has been resolved), and the second parameter indicates the resolved value.
| original | Function | Yes| Asynchronous function.|
| original | Function | Yes| Asynchronous function.|
- Return value
**Return value**
| Type| Description|
| Type| Description|
| -------- | -------- |
| -------- | -------- |
| Function | Callback, in which the first parameter indicates the cause of the rejection (the value is **null** if the promise has been resolved) and the second parameter indicates the resolved value.|
| Function | Callback, in which the first parameter indicates the cause of the rejection (the value is **null** if the promise has been resolved) and the second parameter indicates the resolved value.|
| ignoreBOM | boolean | Yes| No| Whether to ignore the byte order marker (BOM). The default value is **false**, which indicates that the result contains the BOM.|
| ignoreBOM | boolean | Yes| No| Whether to ignore the byte order marker (BOM). The default value is **false**, which indicates that the result contains the BOM.|
| input | Unit8Array | Yes| Uint8Array to decode.|
| input | Unit8Array | Yes| Uint8Array to decode.|
| options | Object | No| Options related to decoding.|
| options | Object | No| Options related to decoding.|
**Table 2** options
**Table 2** options
| Name| Type| Mandatory| Description|
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| -------- | -------- | -------- | -------- |
| stream | boolean | No| Whether to allow data blocks in subsequent **decode()**. If data is processed in blocks, set this parameter to **true**. If this is the last data block to process or data is not divided into blocks, set this parameter to **false**. The default value is **false**.|
| stream | boolean | No| Whether to allow data blocks in subsequent **decode()**. If data is processed in blocks, set this parameter to **true**. If this is the last data block to process or data is not divided into blocks, set this parameter to **false**. The default value is **false**.|
- Return value
**Return value**
| Type| Description|
| Type| Description|
| -------- | -------- |
| -------- | -------- |
| string | Data decoded.|
| string | Data decoded.|
- Example
**Example**
```
```
var textDecoder = new util.TextDecoder("utf-8",{ignoreBOM:true});
var textDecoder = new util.TextDecoder("utf-8",{ignoreBOM:true});
| another | RationalNumber | Yes| Object used to compare with this **RationalNumber** object.|
| another | RationalNumber | Yes| Object used to compare with this **RationalNumber** object.|
- Return value
**Return value**
| Type| Description|
| Type| Description|
| -------- | -------- |
| -------- | -------- |
| number | Returns **0** if the two objects are equal; returns **1** if the given object is less than this object; return **-1** if the given object is greater than this object.|
| number | Returns **0** if the two objects are equal; returns **1** if the given object is less than this object; return **-1** if the given object is greater than this object.|
- Example
**Example**
```
```
var rationalNumber = new util.RationalNumber(1,2);
var rationalNumber = new util.RationalNumber(1,2);
var rational = rationalNumer.creatRationalFromString("3/4");
var rational = rationalNumer.creatRationalFromString("3/4");
...
@@ -351,12 +374,14 @@ valueOf():number
...
@@ -351,12 +374,14 @@ valueOf():number
Obtains the value of this **RationalNumber** object as an integer or a floating-point number.
Obtains the value of this **RationalNumber** object as an integer or a floating-point number.
| string | Returns **NaN** if the numerator and denominator of this object are both **0**; returns a string in Numerator/Denominator format otherwise, for example, **3/5**.|
| string | Returns **NaN** if the numerator and denominator of this object are both **0**; returns a string in Numerator/Denominator format otherwise, for example, **3/5**.|
- Example
**Example**
```
```
var rationalNumber = new util.RationalNumber(1,2);
var rationalNumber = new util.RationalNumber(1,2);
var result = rationalNumber.toString();
var result = rationalNumber.toString();
...
@@ -520,14 +562,15 @@ Obtains the string representation of this **RationalNumber** object.
...
@@ -520,14 +562,15 @@ Obtains the string representation of this **RationalNumber** object.
| key | K | Yes| Key of the key-value pair to add.|
| key | K | Yes| Key of the key-value pair to add.|
| value | V | Yes| Value of the key-value pair to add.|
| value | V | Yes| Value of the key-value pair to add.|
- Return value
**Return value**
| Type| Description|
| Type| Description|
| -------- | -------- |
| -------- | -------- |
| V | Returns the existing value if the key already exists; returns the value added otherwise. If the key or value is null, an exception will be thrown. |
| V | Returns the existing value if the key already exists; returns the value added otherwise. If the key or value is null, an exception will be thrown. |
- Example
**Example**
```
```
var pro = new util.LruBuffer();
var pro = new util.LruBuffer();
var result = pro.put(2,10);
var result = pro.put(2,10);
...
@@ -797,12 +866,14 @@ values():V[]
...
@@ -797,12 +866,14 @@ values():V[]
Obtains all values in this buffer, listed from the most to the least recently accessed.
Obtains all values in this buffer, listed from the most to the least recently accessed.
| V \| undefind | Returns an **Optional** object containing the removed key-value pair if the key exists in the buffer; returns an empty **Optional** object otherwise. If the key is null, an exception will be thrown.|
| V \| undefind | Returns an **Optional** object containing the removed key-value pair if the key exists in the buffer; returns an empty **Optional** object otherwise. If the key is null, an exception will be thrown.|
| isEvict | boolean | No| Whether the buffer capacity is insufficient. If the value is **true**, this method is called due to insufficient capacity.|
| isEvict | boolean | No| Whether the buffer capacity is insufficient. If the value is **true**, this method is called due to insufficient capacity.|
...
@@ -869,7 +946,7 @@ Performs subsequent operations after a value is removed.
...
@@ -869,7 +946,7 @@ Performs subsequent operations after a value is removed.
| value | V | Yes| Value removed.|
| value | V | Yes| Value removed.|
| newValue | V | No| New value for the key if the **put()** method is called and the key to be added already exists. In other cases, this parameter is left blank.|
| newValue | V | No| New value for the key if the **put()** method is called and the key to be added already exists. In other cases, this parameter is left blank.|
- Example
**Example**
```
```
var arr = [];
var arr = [];
class ChildLruBuffer extends util.LruBuffer
class ChildLruBuffer extends util.LruBuffer
...
@@ -904,17 +981,19 @@ contains(key:K):boolean
...
@@ -904,17 +981,19 @@ contains(key:K):boolean
Checks whether this buffer contains the specified key.
Checks whether this buffer contains the specified key.
| value | [ScopeType](#scopetype8) | Yes| Value specified.|
| value | [ScopeType](#scopetype8) | Yes| Value specified.|
- Return value
**Return value**
| Type| Description|
| Type| Description|
| -------- | -------- |
| -------- | -------- |
| [ScopeType](#scopetype8) | Returns **lowerObj** if the specified value is less than the lower limit; returns **upperObj** if the specified value is greater than the upper limit; returns the specified value if it is within this **Scope**.|
| [ScopeType](#scopetype8) | Returns **lowerObj** if the specified value is less than the lower limit; returns **upperObj** if the specified value is greater than the upper limit; returns the specified value if it is within this **Scope**.|
| boolean | Returns **true** if the input value is of the **ArrayBuffer** type; returns **false** otherwise.|
| boolean | Returns **true** if the input value is of the **ArrayBuffer** type; returns **false** otherwise.|
- Example
**Example**
```
```
var that = new util.Types();
var that = new util.Types();
var result = that.isAnyArrayBuffer(new ArrayBuffer([]));
var result = that.isAnyArrayBuffer(new ArrayBuffer([]));
...
@@ -1536,17 +1664,19 @@ Checks whether the input value is of the **ArrayBufferView** type.
...
@@ -1536,17 +1664,19 @@ Checks whether the input value is of the **ArrayBufferView** type.
**ArrayBufferView** is a helper type representing any of the following: **Int8Array**, **Int16Array**, **Int32Array**, **Uint8Array**, **Uint8ClampedArray**, **Uint32Array**, **Float32Array**, **Float64Array**, and **DataView**.
**ArrayBufferView** is a helper type representing any of the following: **Int8Array**, **Int16Array**, **Int32Array**, **Uint8Array**, **Uint8ClampedArray**, **Uint32Array**, **Float32Array**, **Float64Array**, and **DataView**.
| boolean | Returns **true** if the input value is a symbol object; returns **false** otherwise.|
| boolean | Returns **true** if the input value is a symbol object; returns **false** otherwise.|
- Example
**Example**
```
```
var that = new util.Types();
var that = new util.Types();
const symbols = Symbol('foo');
const symbols = Symbol('foo');
...
@@ -2171,17 +2353,19 @@ Checks whether the input value is of the **TypedArray** type.
...
@@ -2171,17 +2353,19 @@ Checks whether the input value is of the **TypedArray** type.
**TypedArray** is a helper type representing any of the following: **Int8Array**, **Int16Array**, **Int32Array**, **Uint8Array**, **Uint8ClampedArray**, **Uint16Array**, **Uint32Array**, **Float32Array**, **Float64Array**, and **DataView**.
**TypedArray** is a helper type representing any of the following: **Int8Array**, **Int16Array**, **Int32Array**, **Uint8Array**, **Uint8ClampedArray**, **Uint16Array**, **Uint32Array**, **Float32Array**, **Float64Array**, and **DataView**.
