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mention shadowing and immutability #263

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Mar 7, 2022
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mention shadowing and immutability #263

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10 changes: 10 additions & 0 deletions book/variables_and_subexpressions.md
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Expand Up @@ -13,6 +13,16 @@ If we create a variable, we can print its contents by using `$` to refer to it:
> echo $my-value
4
```
Variables in Nushell are immutable, that means that you can not change its value after declaration.
They can be shadowed in nested block, that results in:

```
> let my-value = 4
> do { let my-value = 5; echo $my-value }
5
> echo $my-value
4
```

## Variable paths

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