Discover gists

Rustの演算子の優先順位 Operator precedence

次の表で、演算子を優先順位降順に並べる。
- 単項演算子は二項演算子より優先されることが分かる。
  - より正確には、後置単項演算子 > 前置単項演算子 > 二項演算子の順。
- 「非結合」演算子では、その結合を丸括弧 (,) で明示しないと文法エラーとなる。
  - a == b == c - Error
  - (a == b) == c - OK
フィールド演算子.は?より強い。よって &self.hoge?は&((self.hoge)?)となる。

Convenções de nomenclatura para banco de dados

Geral

Os nomes das tabelas e colunas devem estar minúsculas e as palavras devem ser separadas por underscore, seguindo o padrão snake case. E todos os termos devem estar em inglês, exceto alguns termos que não há tradução apropriada para o inglês. Sempre prefira nomes descritivos, evitando ao máximo contrações.

Tabelas

Os nomes das tabelas devem estar no plural.

Oh my zsh.

Install ZSH.

sudo apt install zsh-autosuggestions zsh-syntax-highlighting zsh

	// 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks.
	// You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/)
	(() => {
	const SHOW_SIDES = false; // color sides of DOM nodes?
	const COLOR_SURFACE = true; // color tops of DOM nodes?
	const COLOR_RANDOM = false; // randomise color?
	const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com)
	const MAX_ROTATION = 180; // set to 360 to rotate all the way round
	const THICKNESS = 20; // thickness of layers
	const DISTANCE = 10000; // ¯\\_(ツ)_/¯

	/* Snake Game using C++
	developed by TheKittyKat,
	improved by Nazim Nazari
	December 2017 */

	#include <iostream>
	#include <conio.h>
	using namespace std;

	void run();

	# https://superuser.com/a/1434648

	Add-Type -AssemblyName System.Runtime.WindowsRuntime
	$asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() \| ? { $_.Name -eq 'AsTask' -and $_.GetParameters().Count -eq 1 -and $_.GetParameters()[0].ParameterType.Name -eq 'IAsyncOperation`1' })[0]

	Function Await($WinRtTask, $ResultType) {
	$asTask = $asTaskGeneric.MakeGenericMethod($ResultType)
	$netTask = $asTask.Invoke($null, @($WinRtTask))
	$netTask.Wait(-1) \| Out-Null
	$netTask.Result

	package des.c5inco.material3

	import android.graphics.Matrix
	import android.graphics.Path
	import androidx.compose.animation.core.*
	import androidx.compose.foundation.Canvas
	import androidx.compose.foundation.layout.Box
	import androidx.compose.foundation.layout.Column
	import androidx.compose.foundation.layout.fillMaxSize
	import androidx.compose.foundation.layout.size

	This gist I write, because I couldn't find step by step instructions
	how to install and start postgresql locally (using conda within a conda environment - with the result
	that you can run it without sudo/admin rights on your machine!)
	and not globally in the operating system (which requires sudo/admin rights on that machine).

	I hope, this will help especially people new to postgresql (and those who don't have sudo/admin rights on a specific machine but want
	to run postgresql there)!

	####################################
	# create conda environment

	import https from 'https'; // Import the https module to make HTTPS requests
	import readline from 'readline'; // Import the readline module for interactive command line interfaces

	// Create a readline interface for user input from the command line
	const rl = readline.createInterface({
	input: process.stdin,
	output: process.stdout
	});

	/**

	import llama_cpp
	import re
	import json

	# Model configuration
	# tested with mistral, llama2, llama3, and phi3
	model_path = "/path/to/model"

	base_llm = llama_cpp.Llama(model_path, seed=42, n_gpu_layers=-1, n_ctx=4096, verbose=False, temperature=0.0)