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@sangelxyz
sangelxyz / sharp_resize
Last active September 26, 2023 08:19
import http from 'https';
import sharp from 'sharp';
import fs from 'fs';
const
remoteImageUrl = 'https://s2.coinmarketcap.com/static/img/coins/64x64/1.png',
outputPath = 'resized.jpg',
urlParts = new URL(remoteImageUrl),
options = {
hostname: urlParts.hostname,
@sangelxyz
sangelxyz / gist:6d7c177ad521d6dd158bed97b45fbc29
Created October 6, 2023 08:43
data processing
fn main() {
let json_str = std::fs::read_to_string("../posts.json").unwrap();
let posts: Vec<Post> = from_str(&json_str).unwrap();
let start = Instant::now();
let mut post_tags_map: FxHashMap<&str, Vec<u16>> = FxHashMap::default();
for (post_idx, post) in posts.iter().enumerate() {
for tag in post.tags.iter() {
@sangelxyz
sangelxyz / why-i-like-fsharp.fs
Created March 16, 2024 13:55 — forked from sheridanchris/why-i-like-fsharp.fs
open Donald
open System.Data.Common
open System.Data.SQLite
open System.Threading.Tasks
open Giraffe
open Giraffe.ViewEngine
open FsToolkit.ErrorHandling
open Microsoft.AspNetCore.Builder
[<RequireQualifiedAccess>]
@sangelxyz
sangelxyz / gist:1896431bf005ea93625c37a698518eac
Created March 25, 2024 04:29
server-sent-events-cors
// Server-Sent Events (SSE) with tokio broadcast channel - with cors
// Note: seems to be cors error still while connecting.
use async_stream::stream;
use axum:: {
extract::State, response::{sse::{Event, KeepAlive, Sse}, IntoResponse}, routing::get, Json, Router
};
use std::{
convert::Infallible, sync::Arc, time::Duration
};
@sangelxyz
sangelxyz / gist:29a2395cf609aa469219a162f9379e90
Last active April 25, 2024 12:14
rust-optimised-sccache-mold-cranelift
[unstable]
codegen-backend = true
[build]
rustc-wrapper = '/home/sangel/.cargo/bin/sccache'
rustflags = ["-Z", "threads=16"]
[target.x86_64-unknown-linux-gnu]
linker = "clang"
rustflags = ["-C", "link-arg=-fuse-ld=/usr/local/bin/mold"]
@sangelxyz
sangelxyz / gist:0bad19fe8bae53a3526310f78e0aa385
Created April 26, 2024 04:34
zed error html
<!doctype html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Access-Control-Allow-Origin" content="*" />
<!-- Disable zooming: -->
<meta
name="viewport"
content="width=device-width, initial-scale=1.0, user-scalable=no"
/>
@sangelxyz
sangelxyz / gist:97752321878bf71ac0cf0cfa065c1464
Created May 1, 2024 13:38
javascript sinewave animation on canvas
document.addEventListener('DOMContentLoaded', function() {
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
// Set canvas dimensions
canvas.width = 800;
canvas.height = 400;
let wave = {
y: canvas.height / 2,
@sangelxyz
sangelxyz / lstm_binary_prediction
Created May 3, 2024 05:02
lstm binary prediction
from random import randint
from numpy import array
from numpy import argmax
from pandas import concat
from pandas import DataFrame
from keras.models import Sequential
from keras.layers import LSTM
from keras.layers import Dense
# generate a sequence of random numbers in [0, 99]
@sangelxyz
sangelxyz / gist:e1ed5294a60b7e7cd1b01adf7fd5b3ac
Created May 29, 2024 01:59
tradingview leptos component
use leptos::*;
#[component]
pub fn TradingView(symbol: String) -> impl IntoView {
// Creates a reactive value to update the button
view! {
<div class="tradingview-container" style="width:100%;">
<div class="tradingview-widget-container" style="height:100%;width:100%">
<div class="tradingview-widget-container__widget" style="height:calc(100% - 32px);width:100%"></div>
<script type="text/javascript" src="https://s3.tradingview.com/external-embedding/embed-widget-advanced-chart.js" async inner_html=r#"
@sangelxyz
sangelxyz / rust-let-else.rs
Created August 29, 2024 12:56 — forked from jeremychone/rust-let-else.rs
Rust 1.65 - let-else statements - new language feature!!! For youtube video: https://www.youtube.com/watch?v=U-5_bumwH9w&list=PL7r-PXl6ZPcCIOFaL7nVHXZvBmHNhrh_Q)
//! For youtube video: https://www.youtube.com/watch?v=U-5_bumwH9w&list=PL7r-PXl6ZPcCIOFaL7nVHXZvBmHNhrh_Q
/// Guard pattern with let-else
/// e.g., "my_key: 123"
pub fn key_num_guard_1(item: &str) -> Result<(&str, i32), &'static str> {
let Some((key, val)) = item.split_once(':') else {
return Err("Invalid item");
};
let Ok(val) = val.trim().parse::<i32>() else {
return Err("Invalid item");