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Contents
## Tip
A function with a *return type* can only return data of that *type* and `null`.
However the function caller is only expecting one data type.
Example:
```dart
String hello(int a){
if ( a == 0){
return "a";
} else {
return null;
}
}
```
To make it more clear that this function can also return `null` or more data types, use `dynamic`.
```dart
dynamic hello(int a){
if ( a == 0){
return "a";
} else {
return null;
}
}
Version data entries
74 entries across 74 versions & 1 rubygems