Bundled integrations for opentelemetry-api.cr (https://github.com/wyhaines/opentelemetry-api.cr).

This repository contains an implementation of an OpenTelemetry SDK for Crystal

The core of open telemetry instrumentation is the OpenTelemetry API/SDK. The initial aim of this shard is to implement the OpenTelemetry specification for metrics, traces, and logs.

This implements a very simple timeout method for Crystal. Use it to wrap code in a timeout, so that execution of that code can not continue forever.

This repo contains the code examples for the gno.me tutorial on the AVL tree.

This is a very simple utility, intended for command line use, that accepts via command line or STDIN a set of data items, and then displays them, one per line, with checkboxes next to them, and the…

This is a BTree implementation for Gno. It implements a fast and flexible tree storage type, using pointers for each of the stored nodes, so that it has reasonable behavior when running in a blockc…

This is a Crystal implementation of a Splay Tree; which is a type of binary search tree that is semi-balanced and that tends to self-optimize so that the most accessed items are the fastest to retr…

This shard provides facilities for checking whether a constant exists at compile time, and for a variety of different conditional compilation options. Code can be conditionally compiled based on th…

This is a small UUID library that implements a chronologically sortable UUID.

This is a very small extension of the Time class for Crystal. It has been extracted from another project as it provides a small number of logical and useful extensions to Time.

This library implements a method call tracing facility that can be used to generate either summary or detailed logs of method calls, or to inject arbitrary code execution into method calls.

This is a snapshot of work that was done on a set of contracts intended to implement a system that could be used to assess the results of questions or challenges. It would reward correct responses …

This is a simple implementation of the core functionality for a simple Twitter-like social media platform, built on Gno.land.

There is a problem with IO::Delimited in recent versions of Crystal (the boundaries are not clear yet, but sometime after 1.6.2, and definitely in 1.12.2) that causes file upload failures with iOS.…

A bit of sample code showing how to use w3s to mirror a web page.

This is a simple extension to the String class to add a method which cleanly, flexibly, and naturally breaks long strings for display on a terminal of a given width.

This is a PoC illustrating a traditional database (postgresql) being integrated as a data source with a topos subnet, and cross-subnet communications between both smart contracts and the database.

This is a re-implementation of the canonical topos-playground in Crystal, both to simplify the implementation, and to create a tool that can be simply distributed as a compiled executable.

I wanted a code block component that would utilize the GitHub API to pull code directly from a repository and display it, with syntax highlighting, line highlighting, and a link back to the referen…

This is a proof-of-concept implementation of, first, a blockchain built inside of PostgreSQL in order to maintain a ledger of state changes, and second, the necessary additional pieces needed to re…

This is a simple container intended to be a general purpose configuration container.

This is a small library that attempts to parse a wide variety of date formats with a single call.

This is an exploration of what would be required to build a Topos<->Aleo connector, and how that would work.

A NBChannel is a non-blocking channel. Normal Crystal channels block on send and on receive. The NBChannel will never block on send, and there are both blocking and nonblocking receive calls availa…