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The Crystal Programming language

This tag is for anything related to the Crystal programming language, its ecosystem, and related tooling. Development, usage, apps, shards, tips, and requests for help.

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Open Source Adventures: Episode 65: Crystal Z3 Solver for Minesweeper Puzzle

Open Source Adventures: Episode 65: Crystal Z3 Solver for Minesweeper Puzzle

6
Comments
4 min read
💎 `eval` in Crystal language! Anyolite 🟢🔴 is amazing...

💎 `eval` in Crystal language! Anyolite 🟢🔴 is amazing...

12
Comments
1 min read
Dual-booting Rails 7 & Kemal (a Crystal framework)

Dual-booting Rails 7 & Kemal (a Crystal framework)

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Comments 2
5 min read
From`# =>` to `#p`

From`# =>` to `#p`

12
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4 min read
Create shared library symbolic links when crystal interpreter does not work in crystal 1.4.0

Create shared library symbolic links when crystal interpreter does not work in crystal 1.4.0

5
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1 min read
Create Github Pages in the mint language

Create Github Pages in the mint language

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Comments 1
1 min read
Crystal 1.4 Enumerable#tally now accepts an optional hash to count occurrences

Crystal 1.4 Enumerable#tally now accepts an optional hash to count occurrences

7
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2 min read
Crystal View Context

Crystal View Context

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1 min read
if !obj.nil?

if !obj.nil?

8
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5 min read
I built my Crystal language tool with Github Actions and added the deb created by checkinstall to the release page...

I built my Crystal language tool with Github Actions and added the deb created by checkinstall to the release page...

6
Comments
3 min read
Open Source Adventures: Episode 12: Crystal Shard for Z3

Open Source Adventures: Episode 12: Crystal Shard for Z3

9
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1 min read
Open Source Adventures: Episode 11: Bit Vectors support for Crystal Z3

Open Source Adventures: Episode 11: Bit Vectors support for Crystal Z3

8
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9 min read
Open Source Adventures: Episode 10: Real Numbers supports for Crystal Z3

Open Source Adventures: Episode 10: Real Numbers supports for Crystal Z3

8
Comments
3 min read
Open Source Adventures: Episode 09: Data Extraction Support for Crystal Z3

Open Source Adventures: Episode 09: Data Extraction Support for Crystal Z3

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3 min read
Open Source Adventures: Episode 08: Extending Crystal Z3 for Booleans

Open Source Adventures: Episode 08: Extending Crystal Z3 for Booleans

5
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6 min read
Open Source Adventures: Episode 06: How my crystal-z3 compares with bcardiff's crystal-z3

Open Source Adventures: Episode 06: How my crystal-z3 compares with bcardiff's crystal-z3

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Comments 5
3 min read
Open Source Adventures: Episode 05: Sudoku Solver in Crystal Z3

Open Source Adventures: Episode 05: Sudoku Solver in Crystal Z3

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Comments 6
6 min read
Open Source Adventures: Episode 07: Specs For Crystal Z3

Open Source Adventures: Episode 07: Specs For Crystal Z3

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Comments
5 min read
Open Source Adventures: Episode 03: Object-Oriented Interface for Crystal Z3

Open Source Adventures: Episode 03: Object-Oriented Interface for Crystal Z3

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6 min read
Open Source Adventures: Episode 04: Automated Type Conversion for Crystal Z3

Open Source Adventures: Episode 04: Automated Type Conversion for Crystal Z3

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6 min read
Open Source Adventures: Episode 02: Hiding Low Level Concerns for Crystal Z3

Open Source Adventures: Episode 02: Hiding Low Level Concerns for Crystal Z3

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Comments 3
6 min read
Why I love Ruby: the secret algorithms

Why I love Ruby: the secret algorithms

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Comments 1
6 min read
Open Source Adventures: Episode 01: Crystal FFI and Z3

Open Source Adventures: Episode 01: Crystal FFI and Z3

14
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6 min read
Why I love Ruby: powerful calls

Why I love Ruby: powerful calls

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6 min read
Why I love Ruby: blocks

Why I love Ruby: blocks

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5 min read
Why I love Ruby: a great standard library

Why I love Ruby: a great standard library

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4 min read
Why I love Ruby: equality

Why I love Ruby: equality

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3 min read
Why I love Ruby: almost everything is a call

Why I love Ruby: almost everything is a call

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4 min read
Why I love Ruby: string representation

Why I love Ruby: string representation

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5 min read
Practical Crystal through API Client library building

Practical Crystal through API Client library building

5
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4 min read
Finally Understanding Ethereum Accounts

Finally Understanding Ethereum Accounts

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8 min read
100 Languages Speedrun: Episode 65: Randomized Finite Automaton for Fast Thue Interpreter in Crystal

100 Languages Speedrun: Episode 65: Randomized Finite Automaton for Fast Thue Interpreter in Crystal

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9 min read
100 Languages Speedrun: Episode 55: Better Thue Interpreter in Crystal

100 Languages Speedrun: Episode 55: Better Thue Interpreter in Crystal

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12 min read
100 Languages Speedrun: Episode 49: Crystal

100 Languages Speedrun: Episode 49: Crystal

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Comments 8
8 min read
Packing Static Files Into Crystal Binaries

Packing Static Files Into Crystal Binaries

9
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7 min read
Crest 1.0.0 Release

Crest 1.0.0 Release

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3 min read
Crystal for the curious Ruby on Rails Developer

Crystal for the curious Ruby on Rails Developer

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3 min read
Crystal 1.0

Crystal 1.0

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1 min read
Amber 1.0.0rc2 & Jennifer

Amber 1.0.0rc2 & Jennifer

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1 min read
Concurrency in Crystal (lang)

Concurrency in Crystal (lang)

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2 min read
ลอง event loop และ non-blocking IO ใน crystal-lang

ลอง event loop และ non-blocking IO ใน crystal-lang

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2 min read
UML diagram for GoF design pattern examples in Crystal

UML diagram for GoF design pattern examples in Crystal

6
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14 min read
Twitch EventSub - The Direct Approach to Getting Started With It

Twitch EventSub - The Direct Approach to Getting Started With It

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Comments 1
11 min read
A Not-So-Illustrated Guide to Translating Code From Ruby To Crystal

A Not-So-Illustrated Guide to Translating Code From Ruby To Crystal

14
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6 min read
Deep dive in CORS: History, how it works, and best practices

Deep dive in CORS: History, how it works, and best practices

3
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18 min read
Using GraphQL with Lucky

Using GraphQL with Lucky

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7 min read
Lucky is lightning fast!

Lucky is lightning fast!

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2 min read
Dreams from the multiverse where Crystal is as popular as Go and Rust

Dreams from the multiverse where Crystal is as popular as Go and Rust

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3 min read
Setting up a CRUD app in Lucky

Setting up a CRUD app in Lucky

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10 min read
Crystal - Plugin Pattern

Crystal - Plugin Pattern

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2 min read
Crystal Spec CLI Gotcha (--help)

Crystal Spec CLI Gotcha (--help)

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1 min read
Custom Spec Expectations

Custom Spec Expectations

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3 min read
Macro Tips: Avoid nesting macros if possible

Macro Tips: Avoid nesting macros if possible

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4 min read
Flash Messages with Lucky

Flash Messages with Lucky

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3 min read
Macro Tips: Method usage compilation errors

Macro Tips: Method usage compilation errors

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2 min read
An iterative validation of a new implementation

An iterative validation of a new implementation

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2 min read
Macro Tips: TypeDeclaration

Macro Tips: TypeDeclaration

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2 min read
Crystal JSON beyond the basics

Crystal JSON beyond the basics

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7 min read
A first look at Crystal as a Gopher

A first look at Crystal as a Gopher

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7 min read
Cross compile Crystal to aarch64

Cross compile Crystal to aarch64

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1 min read
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