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int value = 0;
switch (value) {
case 0:
// do something
break;
case 1:
// do something else
break;
default :
// something if anything not match
}
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var command = 'OPEN';
switch (command) {
case 'CLOSED':
executeClosed();
break;
case 'DENIED':
executeDenied();
break;
case 'OPEN':
executeOpen();
break;
default:
executeUnknown();
}
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switch(variable_expression) {
case constant_expr1: {
// statements;
}
break;
case constant_expr2: {
//statements;
}
break;
default: {
//statements;
}
break;
}
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// switch case example in dart
void main() {
// you can change value of the luckyNumber..
int luckyNumber = 70;
switch(luckyNumber) {
case 10: {
print("You got number 10!");
break;
}
case 30: {
print("You got number 20");
break;
}
case 60: {
print("You got number 20");
break;
}
default:
print("You got nothing!");
}
}
// output: You got nothing!
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void main() {
String fruit = 'apple';
switch (fruit) {
case 'apple':
print('Selected fruit is apple');
break;
case 'banana':
print('Selected fruit is banana');
break;
case 'orange':
print('Selected fruit is orange');
break;
default:
print('Selected fruit is unknown');
}
}
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void main() {
String fruit = 'apple';
switch (fruit) {
case 'apple':
print('Selected fruit is apple');
break;
case 'banana':
print('Selected fruit is banana');
break;
case 'orange':
print('Selected fruit is orange');
break;
default:
print('Invalid fruit');
}
}
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String commentMark(int mark) {
switch (mark) {
case 0 : // Enter this block if mark == 0
return "mark is 0" ;
case 1:
case 2:
case 3: // Enter this block if mark == 1 or mark == 2 or mark == 3
return "mark is either 1, 2 or 3" ;
// etc.
default :
return "mark is not 0, 1, 2 or 3" ;
}
}
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// Example of using a switch expression in Dart
void main() {
var grade = 'A';
var message = 'You got ';
switch (grade) {
case 'A':
message += 'an excellent grade!';
break;
case 'B':
message += 'a very good grade!';
break;
case 'C':
message += 'a satisfactory grade!';
break;
case 'D':
message += 'a passing grade!';
break;
case 'F':
message += 'a failing grade!';
break;
default:
message += 'an invalid grade!';
}
print(message);
}
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token = switch (charCode) {
slash || star || plus || minus => operator(charCode),
comma || semicolon => punctuation(charCode),
>= digit0 && <= digit9 => number(),
_ => throw FormatException('Invalid')
};