> For the complete documentation index, see [llms.txt](https://meulencv.gitbook.io/flutter-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://meulencv.gitbook.io/flutter-documentation/dart/functions.md).
# Functions
A function allows you to call a code from a shorter one, and in this way allows you to reuse code.
## Positional:
```dart
void name (String message, int lineNum) {
// ...
}
```
```dart
name (String message, int lineNum) {
return // ...
}
```
Calling the function:
```
name ('text', 55);
```
## Named:
```dart
void name ({String message, int lineNum}) {
//...
}
```
name ({String message, int lineNum}) {
return //...
}
Calling the function:
```dart
name (message: 'A bug!', lineNum: 44);
```
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