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comparison website/src/diff.html.luan @ 1092:a26fbde7ee28
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| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Sun, 08 Jan 2017 17:23:06 -0700 |
| parents | 616761e0b9f6 |
| children | 5dbb552075ff |
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| 1091:20d5968e65cc | 1092:a26fbde7ee28 |
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| 130 <p> | 130 <p> |
| 131 By default, there are no global variables and an undefined variable produces a compile error. To enable global variables, one must define <code>_ENV</code>. Avoiding global variables makes it much easier to catch errors at compile time. | 131 By default, there are no global variables and an undefined variable produces a compile error. To enable global variables, one must define <code>_ENV</code>. Avoiding global variables makes it much easier to catch errors at compile time. |
| 132 | 132 |
| 133 <h3 heading><a name="stmt">Statements</a></h3> | 133 <h3 heading><a name="stmt">Statements</a></h3> |
| 134 | 134 |
| 135 <p>Luan adds the block terminators <b>end_do</b>, <b>end_for</b>, <b>end_function</b>, <b>end_if</b>, and <b>end_while</b>. These can be used to end the appropriate block type, but <b>end</b> can also be used to end any block.</p> | |
| 136 | |
| 135 <p>Most statements in Luan are the same as Lua. Only those statements that differ will be listed here.</p> | 137 <p>Most statements in Luan are the same as Lua. Only those statements that differ will be listed here.</p> |
| 136 | 138 |
| 137 <h4 heading><a name="control">Control Structures</a></h4> | 139 <h4 heading><a name="control">Control Structures</a></h4> |
| 138 | 140 |
| 139 <p>The Luan <b>if</b>, <b>while</b>, and <b>repeat</b> statement are the same as in Lua except that the condition expression must return a boolean value. Any other value type will produce an error. This helps catch errors and makes code more readable.</p> | 141 <p>The Luan <b>if</b>, <b>while</b>, and <b>repeat</b> statement are the same as in Lua except that the condition expression must return a boolean value. Any other value type will produce an error. This helps catch errors and makes code more readable.</p> |