PetarKirov’s gists

PetarKirov / check_if_invariants_are_enabled.d

Last active November 18, 2020 06:31

D: Check if invariants are enabled using CTFE

	bool invariantsEnabled() @trusted nothrow pure
	{
	static struct HasInvariant
	{
	@safe pure:
	invariant { throw new Exception("From invariant"); }
	void triggerInvaraint() { }
	}
	try
	HasInvariant().triggerInvaraint();

PetarKirov / app.d

Last active November 16, 2020 07:00

LDC 1.24.0. / CT string compare / druntime symbols

	extern(C) void _start() {
	static if ("a" == "a") {}
	}

PetarKirov / range_primitives_example.d

Last active September 27, 2020 18:23

Example usage of D range primitives

	module range_primitives_example;

	/++
	Takes a slice of the first `n` elements from `input` and advances it by the
	same amount.
	+/
	inout(int[]) readN_version1(ref inout(int)[] input, size_t n)
	{
	auto result = input[0 .. n];
	input = input[n .. $];

PetarKirov / global-immutable-aa-example.d

Created September 23, 2020 19:54

Global immutable associative array variables

	void main() {}

	immutable string[ubyte] valueTypes;

	// This is a shared module constructor. Code in this block will be executed
	// exactly once at application startup. It is similar to running code in the
	// global scope in JavaScript. Shared module constructors are allowed to
	// "mutate" immutable global variables in order to initialize them.
	shared static this()
	{

PetarKirov / enum-aa-example.d

Created September 23, 2020 19:11

Enum associative arrays

	void main() {}

	enum string[ubyte] valueTypes = [
	0x7F: "i32",
	0x7E: "i64",
	0x7D: "f32",
	0x7C: "f64"
	];

	pure unittest

PetarKirov / example.d

Last active September 2, 2020 17:35

Attaching UDAs to enum members in dlang

	void main()
	{
	import std.stdio : writeln;
	import std.traits : EnumMembers;

	foreach (SymbolKind kind; [EnumMembers!SymbolKind])
	kind.enumUdatoString.writeln;

	`----------------------`.writeln;

PetarKirov / tree.d

Last active August 13, 2020 10:22

tree formatting

	void main()
	{
	import std.json : parseJSON;
	import std.stdio : writeln;

	const parsed = mySampleJson.parseJSON;
	const tree = parsed.jsonToTree;
	(*tree).writeln;
	}

PetarKirov / results.txt

Created June 7, 2020 21:01

Running Dub's testsuite on Android (under Termux) with LDC 1.22.0-beta2

	[0;33m[INFO] Running /data/data/com.termux/files/home/code/repos/dlang/dlang/dub/test/0-init-fail-json.sh...[0m
	[0;33m[INFO] Running /data/data/com.termux/files/home/code/repos/dlang/dlang/dub/test/0-init-fail.sh...[0m
	[0;33m[INFO] Running /data/data/com.termux/files/home/code/repos/dlang/dlang/dub/test/0-init-interactive.sh...[0m
	Package recipe format (sdl/json) [json]: Name [0-init-interactive]: Description [A minimal D application.]: Author name [u0_a160]: License [proprietary]: Copyright string [Copyright © 2020, author]: Add dependency (leave empty to skip) []: Successfully created an empty project in '/data/data/com.termux/files/home/code/repos/dlang/dlang/dub/test/0-init-interactive'.
	Package successfully created in 0-init-interactive
	[0;33m[INFO] Running /data/data/com.termux/files/home/code/repos/dlang/dlang/dub/test/0-init-multi-json.sh...[0m
	Successfully created an empty project in '/data/data/com.termux/files/home/code/repos/dlang/dlang/dub/test/0-init-multi-pack'.
	Package successfully cre

PetarKirov / azure.md

Last active April 9, 2020 09:53

Azure CLI tips

Useful Azure CLI commands

Register all Microsoft resource providers

az provider list --query "[? starts_with(@.namespace, 'Microsoft')].namespace" -o tsv \
  | xargs -I{} sh -c 'echo "Registering provider {}" && az provider register -n {}'

PetarKirov / hello-node.Dockerfile

Created April 8, 2020 22:28

Test Node.js Docker container

	ARG BASE_IMAGE=node:lts-alpine
	FROM $BASE_IMAGE
	WORKDIR /src
	ENV HOST=0.0.0.0 PORT=8080
	RUN echo $'\
	"use strict";\n\
	const http = require("http");\n\
	const server = http.createServer((request, response) => {\n\ response.writeHead(200, {"Content-Type": "text/plain"});\n\
	response.end("Hello, World!");\n\
	});\n\

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