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-<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>