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51 lines
1.2 KiB
Markdown
51 lines
1.2 KiB
Markdown
---
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title: int
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linktitle: int
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description: Creates an `int` from the argument passed into the function.
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godocref:
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date: 2017-02-01
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publishdate: 2017-02-01
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lastmod: 2017-02-01
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categories: [functions]
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menu:
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docs:
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parent: "functions"
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keywords: [strings,integers]
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signature: ["int INPUT"]
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workson: []
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hugoversion:
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relatedfuncs: []
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deprecated: false
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aliases: []
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---
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Useful for turning strings into numbers.
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```
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{{ int "123" }} → 123
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```
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{{% note "Usage Note" %}}
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If the input string is supposed to represent a decimal number, and if it has
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leading 0's, then those 0's will have to be removed before passing the string
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to the `int` function, else that string will be tried to be parsed as an octal
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number representation.
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The [`strings.TrimLeft` function](/functions/strings.trimleft/) can be used for
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this purpose.
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```
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{{ int ("0987" | strings.TrimLeft "0") }}
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{{ int ("00987" | strings.TrimLeft "0") }}
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```
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**Explanation**
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The `int` function eventually calls the `ParseInt` function from the Go library
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`strconv`.
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From its [documentation](https://golang.org/pkg/strconv/#ParseInt):
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> the base is implied by the string's prefix: base 16 for "0x", base 8 for "0",
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> and base 10 otherwise.
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{{% /note %}}
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