json class : IsDefined(int) method
Description
Gets a value indicating whether a value corresponding to the index exists.
Syntax
jsonInstance.IsDefined(int index)
Arguments
| Class | Name | Description |
| int | index | An index. |
Return value
| Class | Description |
| bool | A value indicating whether a value exists. |
Sample code
| 1: | jsonIns = new json("[@name@,true,1000,null]".Replace("@","".DQ)); // array |
| 2: | bool exists = jsonIns.IsDefined(0); // true |
| 3: | exists = jsonIns.IsDefined(1); // true |
| 4: | exists = jsonIns.IsDefined(2); // true |
| 5: | exists = jsonIns.IsDefined(3); // true |
| 6: | exists = jsonIns.IsDefined(4); // false |
Notes
If the instance is an JSON object, an exception is raised.
Only values that are direct children are searched.
Returns true if a value corresponding to the index exists. Otherwise it returns false.
Links for reference
None