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ReasonLIGO cheat-sheet.

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Sander 2020-01-28 16:36:55 +00:00
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gitlab-pages/docs/api/cheat-sheet.md
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@ -4,6 +4,9 @@ title: Cheat Sheet
---
<div class="cheatsheet">
<!--
Note that this table is not compiled before production and currently needs to be managed manually.
-->
<!--DOCUSAURUS_CODE_TABS-->
<!--PascaLIGO-->
@ -67,11 +70,42 @@ title: Cheat Sheet
|Variants|<pre><code>type action =<br/>&#124; Increment of int<br/>&#124; Decrement of int</code></pre>|
|Variant *(pattern)* matching|<pre><code>let a: action = Increment 5<br/>match a with<br/>&#124; Increment n -> n + 1<br/>&#124; Decrement n -> n - 1<br/></code></pre>|
|Records|<pre><code>type person = {<br/>&nbsp;&nbsp;age: int ;<br/>&nbsp;&nbsp;name: string ;<br/>}<br/><br/>let john : person = {<br/>&nbsp;&nbsp;age = 18;<br/>&nbsp;&nbsp;name = "John Doe";<br/>}<br/><br/>let name: string = john.name</code></pre>|
|Maps|<pre><code>type prices = (nat, tez) map<br/><br/>let prices : prices = Map.literal [<br/>&nbsp;&nbsp;(10n, 60mutez);<br/>&nbsp;&nbsp;(50n, 30mutez);<br/>&nbsp;&nbsp;(100n, 10mutez)<br/>]<br/><br/>let price: tez option = Map.find 50n prices<br/><br/>let prices: prices = Map.update 200n 5mutez prices</code></pre>|
|Maps|<pre><code>type prices = (nat, tez) map<br/><br/>let prices : prices = Map.literal [<br/>&nbsp;&nbsp;(10n, 60mutez);<br/>&nbsp;&nbsp;(50n, 30mutez);<br/>&nbsp;&nbsp;(100n, 10mutez)<br/>]<br/><br/>let price: tez option = Map.find_opt 50n prices<br/><br/>let prices: prices = Map.update 200n (Some 5mutez) prices</code></pre>|
|Contracts & Accounts|<pre><code>let destination_address : address = "tz1..."<br/>let contract : unit contract = <br/> Operation.get_contract destination_address</code></pre>|
|Transactions|<pre><code>let payment : operation = <br/> Operation.transaction (unit, receiver, amount)</code></pre>|
|Transactions|<pre><code>let payment : operation = <br/> Operation.transaction unit amount receiver</code></pre>|
|Exception/Failure|`failwith("Your descriptive error message for the user goes here.")`|
<!--ReasonLIGO-->
|Primitive |Example|
|--- |---|
|Strings | `"Tezos"`|
|Characters | `"t"`|
|Integers | `42`, `7`|
|Natural numbers | `42n`, `7n`|
|Unit| `unit`|
|Boolean|<pre><code>let has_drivers_license: bool = false;<br/>let adult: bool = true;</code></pre> |
|Boolean Logic|<pre><code>(not true) = false = (false && true) = (false &#124;&#124; false)</code></pre>|
|Mutez (micro tez)| `42mutez`, `7mutez` |
|Address | `("tz1KqTpEZ7Yob7QbPE4Hy4Wo8fHG8LhKxZSx": address)`, `("KT1JepfBfMSqkQyf9B1ndvURghGsSB8YCLMD": address)`|
|Addition |`3 + 4`, `3n + 4n`|
|Multiplication & Division| `3 * 4`, `3n * 4n`, `10 / 5`, `10n / 5n`|
|Modulo| `10 mod 3`|
|Tuples| <pre><code>type name = (string, string);<br/>let winner: name = ("John", "Doe");<br/>let first_name: string = winner[0];<br/>let last_name: string = winner[1];</code></pre>|
|Types|`type age = int;`, `type name = string;` |
|Includes|```#include "library.mligo"```|
|Functions |<pre><code>let add = (a: int, b: int) : int => a + b; </code></pre>|
| If Statement | <pre><code>let new_id: int = if (age < 16) {<br/> failwith("Too young to drive."); <br/> } else { prev_id + 1; }</code></pre>|
|Options|<pre><code>type middle_name = option(string);<br/>let middle_name : middle_name = Some("Foo");<br/>let middle_name : middle_name = None;</code></pre>|
|Variable Binding | ```let age: int = 5;```|
|Type Annotations| ```("tz1KqTpEZ7Yob7QbPE4Hy4Wo8fHG8LhKxZSx" : address)```|
|Variants|<pre><code>type action =<br/>&#124; Increment(int)<br/>&#124; Decrement(int);</code></pre>|
|Variant *(pattern)* matching|<pre><code>let a: action = Increment(5);<br/>switch(a) {<br/>&#124; Increment(n) => n + 1<br/>&#124; Decrement(n) => n - 1;<br/> } <br/></code></pre>|
|Records|<pre><code>type person = {<br/>&nbsp;&nbsp;age: int,<br/>&nbsp;&nbsp;name: string<br/>}<br/><br/>let john : person = {<br/>&nbsp;&nbsp;age: 18,<br/>&nbsp;&nbsp;name: "John Doe"<br/>};<br/><br/>let name: string = john.name;</code></pre>|
|Maps|<pre><code>type prices = map(nat, tez);<br/><br/>let prices : prices = Map.literal([<br/>&nbsp;&nbsp;(10n, 60mutez),<br/>&nbsp;&nbsp;(50n, 30mutez),<br/>&nbsp;&nbsp;(100n, 10mutez)<br/>]);<br/><br/>let price: option(tez) = Map.find_opt(50n, prices);<br/><br/>let prices: prices = Map.update(200n, Some (5mutez), prices);</code></pre>|
|Contracts & Accounts|<pre><code>let destination_address : address = "tz1...";<br/>let contract : contract(unit) = <br/> Operation.get_contract(destination_address);</code></pre>|
|Transactions|<pre><code>let payment : operation = <br/> Operation.transaction (unit, amount, receiver);</code></pre>|
|Exception/Failure|`failwith("Your descriptive error message for the user goes here.");`|
<!--END_DOCUSAURUS_CODE_TABS-->