GavinRay97

# Requirements:
#   clang - The classes/structs you want to dump must be used in code at least once, not just defined.
#   MSVC  - The classes/structs you want to dump must have "MEOW" in the name for "reportSingleClass" to work.
# Usage:
#   $ make dump_vtables file=test.cpp
dump_vtables:
  clang -cc1 -fdump-record-layouts -emit-llvm  $(file) > clang-vtable-layout-$(file).txt
  clang -cc1 -fdump-vtable-layouts -emit-llvm  $(file) > clang-record-layout-$(file).txt
  g++ -fdump-lang-class=$(file).txt $(file)
  cl.exe $(file) /d1reportSingleClassLayoutMEOW > msvc-single-class-vtable-layout-$(file).txt

GavinRay97

WASI_VERSION_FULL = 20.0
WASMTIME_DIR = ../third-party/wasmtime-dev-x86_64-linux-c-api
WASI_SDK_PATH = ./wasi-sdk-$(WASI_VERSION_FULL)

CC = clang++
WASM_CC = $(WASI_SDK_PATH)/bin/clang++ --sysroot=$(WASI_SDK_PATH)/share/wasi-sysroot

CFLAGS = -std=c++20 -I$(WASMTIME_DIR)/include -L$(WASMTIME_DIR)/lib
LIBS = -lwasmtime

GavinRay97

#include <cassert>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <optional>
#include <span>
#include <string>

// A write-ahead log is a log of all the operations that have been performed on the database.
struct LogEntryHeader

GavinRay97

{
  "recommendations": [
    "twxs.cmake",
    "ms-vscode.cpptools",
    "ms-vscode.cmake-tools",
    "llvm-vs-code-extensions.vscode-clangd"
  ]
}

GavinRay97

Making Apache Calcite work in SQuirreL SQL Client

Recently I wanted to test some Calcite functionality, and thought it might be nice to use a GUI instead of sqlline. It turns out, it is:

I figured you could just use something like SquirreL, which lets you import arbitrary JDBC drivers. This was less straightforward than I thought.

GavinRay97

# Created with: $ diagtool tree

-Wall
-Wextra
-Wpedantic

-Warray-bounds-pointer-arithmetic
-Wbind-to-temporary-copy
-Wcalled-once-parameter
-Wcast-align

GavinRay97

package com.example;

import org.apache.arrow.memory.RootAllocator;
import org.apache.arrow.vector.BitVector;
import org.apache.arrow.vector.FieldVector;
import org.apache.arrow.vector.FloatingPointVector;
import org.apache.arrow.vector.IntVector;
import org.apache.arrow.vector.VarBinaryVector;
import org.apache.arrow.vector.VarCharVector;
import org.apache.arrow.vector.VectorSchemaRoot;

GavinRay97

Introduction

This document outlines how to model a common organization-based permission system in Hasura. Let's assume that you have some table structure like the following:

Table Name	Columns	Foreign Keys
User	id, name, email
Organization User	id, user_id, organization_id	user_id -> user.id, organization_id -> organization.id
Organization	id, name

GavinRay97

import { Module } from '@nestjs/common'
import { AuthService } from './auth.service'

@Module({
  providers: [AuthService],
  exports: [AuthService],
})
export class AuthModule {}

GavinRay97

class AsyncLock {
    private _lock = new Int32Array(new SharedArrayBuffer(4)) // SharedArrayBuffer for multi-threading, 4 bytes for 32-bit integer

    static INDEX = 0
    static UNLOCKED = 0
    static LOCKED = 1

    lock() {
        while (true) {
            console.log("lock")