diff options
| author | seh <henesy.dev@gmail.com> | 2019-03-03 22:43:25 -0600 |
|---|---|---|
| committer | seh <henesy.dev@gmail.com> | 2019-03-03 22:43:25 -0600 |
| commit | 6a49bdd014794981f99ed32969b3dac2db78e981 (patch) | |
| tree | 4e39b65321e36b6e0a9a97fade41649ee0c1727c /Switch | |
| parent | 7635c9c15d25fce6b392f9899a68a36cdd7c06c4 (diff) | |
add explanation for switch
Diffstat (limited to 'Switch')
| -rw-r--r-- | Switch/README.md | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/Switch/README.md b/Switch/README.md index 92be1f4..9bfe55f 100644 --- a/Switch/README.md +++ b/Switch/README.md @@ -2,31 +2,33 @@ Limbo does not have a verbatim `switch` statement. Rather, it has a statement named `case` which is analogous, but not identical to C's switch-case construct. -Limbo case statements break by default and accept range matching operations involving the `or` and `to` keywords. - -Note: A break or continue followed by a label causes a break out of, or the next iteration of, the enclosing construct that is labeled with the same label. - ## Source ### switch.b:16,31 +This segment exemplifies a few features of limbo's case statement. There is an iterative loop wrapped around a case statement which has a boolean `or`'d section and a default section, indicated by the wildcard `*` operator. + +Limbo case statements break by default and accept range matching operations involving the `or` and `to` keywords. +A break or continue followed by a label causes a break out of, or the next iteration of, the enclosing construct that is labeled with the same label. ### switch.b:33,42 - +This case statement demonstrates the use of the `to` range operator in a given section while providing a specific section to match the `C` character as well. ### switch.b:44,51 - +Limbo is able to switch on string values, this can include a `nil` check, demonstrated by the `""` section. Note that there is no default section provided. The default section is not mandatory. ### switch.b:53,60 - +This case verifies whether a value is `0` or `1` to determine if a value is binary. ### switch.b:62,69 +The valid types for case statements include: `int`, `string`, and `big`. +Note that the `big` coercion statement is mandatory. ## Demo @@ -44,3 +46,4 @@ Note: A break or continue followed by a label causes a break out of, or the next ## Exercises - Try commenting out the `break` and/or `continue` keywords in the first switch, how does the behavior change? +- Change the variable `c` to equal `'C'`, what's printed? |