How to use DART operators
In this article, i am going to explain about DART operators.
Equality and relational operator
DART supports different type of equality and relational operators.
| Operators |
Meaning |
| = = |
To perform equality. |
| != |
To perform, whether value is equal or not in compression to other variable. |
| = = = |
To perform, variable has a same instance |
| !== |
To perform, variable has not same instance. |
| > |
To perform, one value is greater than other or not. |
| < |
To perform, one value is less than other or not. |
| >= |
To perform, one value is greater or equal to other or not. |
| <= |
To perform, one value is lees or equal to other or not. |
| is |
Returned true, if object has a specified type. |
| is! |
Returned false, if object has a specified type. |
Example of equality and relational operator
|
void main() {
int a=3;
int b=2;
int c=a;
print("Welcome in DART relational and equality operators");
if(a==3){
print("Value of a is 3");
if(a!=b){
print("a is not equal to b");
if(a===c){
print("a and c are same instance");
if(a!==b){
print("a and b are't same instance");
if(a>b){
print("a is greater then b");
if(b<a){
print("b is less than a");
if(a>=b){
print("a is greater or or equal to b");
if(b<=a){
print("b is less or equal to a");
if(a is int){
print("a is integer type variable");
if(a is! String){
print("a is define as a int not a String");
}
}
}
}
}
}
}
}
}
}
else{
print("False");
}
}
|
Output:
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