34 lines
1.1 KiB
Markdown
34 lines
1.1 KiB
Markdown
---
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layout: single
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title: "String Interpolation"
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---
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String interpolation is the new syntax introduced to Luau that allows you to create a string literal with expressions inside of that string literal.
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In short, it's a safer and more ergonomic alternative over `string.format`.
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Here's a quick example of a string interpolation:
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```lua
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local combos = {2, 7, 1, 8, 5}
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print(`The lock combination is {table.concat(combos)}. Again, {table.concat(combos, ", ")}.`)
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--> The lock combination is 27185. Again, 2, 7, 1, 8, 5.
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```
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String interpolation also composes well with the `__tostring` metamethod.
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```lua
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local balance = setmetatable({ value = 500 }, {
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__tostring = function(self)
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return "$" .. tostring(self.value)
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end
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})
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print(`You have {balance}!`)
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--> You have $500!
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```
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To find out more details about this feature, check out [Luau Syntax page](/syntax#string-interpolation).
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This is also the first major language feature implemented in a [contribution](https://github.com/Roblox/luau/pull/614) from the open-source community. Thanks [Kampfkarren](https://github.com/Kampfkarren)!
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