40 lines
1.1 KiB
Markdown
40 lines
1.1 KiB
Markdown
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---
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id: variables
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title: Variables
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---
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## Defining a variable
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Variables in LIGO can be defined in two ways - by using either the `const` or `var` keywords. `const` can be used both at global (top-level) and local scope (within functions/blocks), while `var` can be used for mutable values in the local scope.
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### Imutable variables using `const`
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> ⚠️ Currently const values are mutable as well, however this is something that will change in the upcoming release. For the time being think of `const` as a semantical way to indicate developer intentions.
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<!--DOCUSAURUS_CODE_TABS-->
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<!--Pascaligo-->
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```Pascal
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const four: int = 4;
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```
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<!--END_DOCUSAURUS_CODE_TABS-->
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### Mutable variables using `var`
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> ⚠️ `var` can't be used in the global scope
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<!--DOCUSAURUS_CODE_TABS-->
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<!--Pascaligo-->
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```Pascal
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// won't work, use const for global values instead
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var four: int = 4;
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// value of `number` can be mutated within local scope
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function addFour(var number: int): int is
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block {
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number := number + 4;
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} with number;
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```
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<!--END_DOCUSAURUS_CODE_TABS-->
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