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| author | Louis Pilfold <louis@lpil.uk> | 2024-02-15 12:18:17 +0000 |
|---|---|---|
| committer | Louis Pilfold <louis@lpil.uk> | 2024-02-19 18:18:04 +0000 |
| commit | f70130322cd306268c5da12c1517dc5725615ae8 (patch) | |
| tree | 2f047d58f0bd0c9438d57b42499d40d13fea73ad /src/content/chapter0_basics/lesson14_blocks/en.html | |
| parent | 63120914512bd4a3003788a7592ef3cc4ff32cf5 (diff) | |
| download | tour-f70130322cd306268c5da12c1517dc5725615ae8.tar.gz tour-f70130322cd306268c5da12c1517dc5725615ae8.zip | |
text -> en
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| -rw-r--r-- | src/content/chapter0_basics/lesson14_blocks/en.html | 23 |
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diff --git a/src/content/chapter0_basics/lesson14_blocks/en.html b/src/content/chapter0_basics/lesson14_blocks/en.html new file mode 100644 index 0000000..bc82e39 --- /dev/null +++ b/src/content/chapter0_basics/lesson14_blocks/en.html @@ -0,0 +1,23 @@ +<p> + Blocks are one or more expressions grouped together with curly braces. Each + expression is evaluated in order and the value of the last expression is + returned. +</p> +<p> + Any variables assigned within the block can only be used within the block. +</p> +<p> + Try uncommenting <code>io.debug(degrees)</code> to see the compile error from + trying to use a variable that is not in scope. +</p> +<p> + Blocks can also be used to change the order of evaluation of binary operators + expressions. +</p> +<p> + <code>*</code> binds more tightly than <code>+</code> so the expression + <code>1 + 2 * 3</code> evaluates to 7. If the <code>1 + 2</code> should be + evaluated first to make the expression evaluate to 9 then the expression can be + wrapped in a block: <code>{ 1 + 2 } * 3</code>. This is similar to grouping + with parentheses in some other languages. +</p> |