102 lines
2.0 KiB
Markdown
102 lines
2.0 KiB
Markdown
---
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id: strings
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title: Strings
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---
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Strings are defined using the built-in `string` type like this:
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<!--DOCUSAURUS_CODE_TABS-->
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<!--Pascaligo-->
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```
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const a : string = "Hello Alice"
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```
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<!--CameLIGO-->
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```
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let a : string = "Hello Alice"
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```
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<!--ReasonLIGO-->
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```reasonligo
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let a : string = "Hello Alice";
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```
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<!--END_DOCUSAURUS_CODE_TABS-->
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## Concatenating strings
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<!--DOCUSAURUS_CODE_TABS-->
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<!--Pascaligo-->
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Strings can be concatenated using the `^` operator.
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```pascaligo
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const name : string = "Alice"
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const greeting : string = "Hello"
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const full_greeting : string = greeting ^ " " ^ name
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```
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<!--CameLIGO-->
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Strings can be concatenated using the `^` operator.
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```cameligo
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let name : string = "Alice"
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let greeting : string = "Hello"
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let full_greeting : string = greeting ^ " " ^ name
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```
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<!--ReasonLIGO-->
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Strings can be concatenated using the `++` operator.
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```reasonligo
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let name : string = "Alice";
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let greeting : string = "Hello";
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let full_greeting : string = greeting ++ " " ++ name;
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```
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<!--END_DOCUSAURUS_CODE_TABS-->
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## Slicing strings
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Strings can be sliced using a built-in function:
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<!--DOCUSAURUS_CODE_TABS-->
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<!--Pascaligo-->
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```pascaligo
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const name : string = "Alice"
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const slice : string = string_slice (0n, 1n, name)
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```
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<!--CameLIGO-->
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```cameligo
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let name : string = "Alice"
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let slice : string = String.slice 0n 1n name
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```
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<!--ReasonLIGO-->
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```reasonligo
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let name : string = "Alice";
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let slice : string = String.slice (0n, 1n, name);
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```
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<!--END_DOCUSAURUS_CODE_TABS-->
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> ⚠️ Notice that the `offset` and slice `length` are natural numbers
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> (`nat`).
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## Aquiring the length of a string
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The length of a string can be found using a built-in function:
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<!--DOCUSAURUS_CODE_TABS-->
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<!--Pascaligo-->
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```pascaligo
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const name : string = "Alice"
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// length = 5
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const length : nat = size (name)
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```
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<!--CameLIGO-->
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```cameligo
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let name : string = "Alice"
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let length : nat = String.size name
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```
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<!--ReasonLIGO-->
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```reasonligo
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let name : string = "Alice";
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let length : nat = String.size (name);
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```
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<!--END_DOCUSAURUS_CODE_TABS-->
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