SimultaneousAssignment.md - wiki - Git at Google

 # Simultaneous Assignment

 Simultaneous assignment is useful in many cases to make related assignments in a single statement.  Sometimes they are required, either because only a single statement is available (e.g. in an if statement) or because the values will change after the statement (e.g. in the case of swap).  All values on the right-hand side of the assignment operator are evaluated before the assignment is performed.

 Simultaneous assignment in an if statement can improve readability, especially in test functions:
 ```
 if got, want := someFunction(...), currTest.Expected; got != want {
     t.Errorf("%d. someFunction(...) = %v, want %v", currIdx, got, want)
 }
 ```

 Swapping two values is also made simple using simultaneous assignment:

 ```
 i, j = j, i
 ```

 http://golang.org/ref/spec#Assignments
	# Simultaneous Assignment

	Simultaneous assignment is useful in many cases to make related assignments in a single statement. Sometimes they are required, either because only a single statement is available (e.g. in an if statement) or because the values will change after the statement (e.g. in the case of swap). All values on the right-hand side of the assignment operator are evaluated before the assignment is performed.

	Simultaneous assignment in an if statement can improve readability, especially in test functions:
	```
	if got, want := someFunction(...), currTest.Expected; got != want {
	t.Errorf("%d. someFunction(...) = %v, want %v", currIdx, got, want)
	}
	```

	Swapping two values is also made simple using simultaneous assignment:

	```
	i, j = j, i
	```

	http://golang.org/ref/spec#Assignments