89 lines
2.0 KiB
Markdown
89 lines
2.0 KiB
Markdown
---
|
|
id: toplevel
|
|
title: Toplevel
|
|
description: Available functions at the top level
|
|
hide_table_of_contents: true
|
|
---
|
|
|
|
import Syntax from '@theme/Syntax';
|
|
import SyntaxTitle from '@theme/SyntaxTitle';
|
|
|
|
These functions are available without any needed prefix.
|
|
|
|
<SyntaxTitle syntax="pascaligo">
|
|
function is_nat: int -> option(nat)
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
val is_nat: int -> nat option
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
let is_nat: int => option(nat)
|
|
</SyntaxTitle>
|
|
|
|
Convert an `int` to a `nat` if possible.
|
|
|
|
Note that `Michelson.is_nat` is deprecated. Please use `is_nat` instead.
|
|
|
|
<SyntaxTitle syntax="pascaligo">
|
|
function abs: int -> nat
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
val abs: int -> nat
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
let abs: int => nat
|
|
</SyntaxTitle>
|
|
|
|
Cast an `int` to `nat`.
|
|
|
|
<SyntaxTitle syntax="pascaligo">
|
|
function int: nat -> int
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
val int: nat -> int
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
let int: nat => int
|
|
</SyntaxTitle>
|
|
|
|
Cast an `nat` to `int`.
|
|
|
|
<SyntaxTitle syntax="pascaligo">
|
|
const unit: unit
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
val unit: unit
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="pascaligo">
|
|
let (): unit
|
|
</SyntaxTitle>
|
|
|
|
A helper to create a unit.
|
|
|
|
<SyntaxTitle syntax="pascaligo">
|
|
function failwith : string -> unit
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="cameligo">
|
|
function failwith : string -> unit
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="reasonligo">
|
|
function failwith : string -> unit
|
|
</SyntaxTitle>
|
|
|
|
Cause the contract to fail with an error message.
|
|
|
|
> ⚠ Using this currently requires in general a type annotation on the
|
|
> `failwith` call.
|
|
|
|
<SyntaxTitle syntax="pascaligo">
|
|
function assert : bool -> unit
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="cameligo">
|
|
function assert : bool -> unit
|
|
</SyntaxTitle>
|
|
<SyntaxTitle syntax="reasonligo">
|
|
function assert : bool -> unit
|
|
</SyntaxTitle>
|
|
|
|
Check if a certain condition has been met. If not the contract will fail.
|