Course of Raku / Essentials / Creating and calling functions / Named parameters
Quiz 1 — Named parameters
Consider a function:
sub f(:$a, :$b) {
$a - $b
}
1
What are the valid ways to call it?
| 0 | f(1, 2) | Positional arguments passed, not named. |
| 1 | f(a => 1, b => 2) | |
| 0 | f(a = 1, b = 2) | Assignment operator instead of a pair constructor. |
| 1 | f(b => 2, a => 1) |
2
For the same function, what do the following calls return?
| −1 | f(a => 1, b => 2) returns (: 1, −1 :) |
|
| −1 | f(b => 2, a => 1) returns (: 1, −1 :) |
The order of named arguments does not matter. |
| 1 | f(a => 2, b => 1) returns (: 1, −1 :) |
More practice
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