ssrihari

An opinionated list of excellent Clojure learning materials

These resources (articles, books, and videos) are useful when you're starting to learn the language, or when you're learning a specific part of the language. This an opinionated list, no doubt. I've compiled this list from writing and teaching Clojure over the last 10 years.

• 🔴 Mandatory (for both beginners and intermediates)
• 🟩 For beginners
• 🟨 For intermediates

Table of contents

1. Getting into the language

cscouto

class ViewController: UIViewController {
    @IBOutlet weak var tableView: UITableView!
    @IBOutlet weak var heightTableView: NSLayoutConstraint!
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        tableView.addObserver(self, 
                              forKeyPath: "contentSize", 
                              options: .new, 
                              context: nil)

brennanMKE

fileprivate func directoryExistsAtPath(_ path: String) -> Bool {
    var isDirectory = ObjCBool(true)
    let exists = FileManager.default.fileExists(atPath: path, isDirectory: &isDirectory)
    return exists && isDirectory.boolValue
}

zcaceres

Nested Routers in Express.js

Express makes it easy to nest routes in your routers. But I always had trouble accessing the request object's .params when you had a long URI with multiple parameters and nested routes.

Let's say you're building routes for a website www.music.com. Music is organized into albums with multiple tracks. Users can click to see a track list. Then they can select a single track and see a sub-page about that specific track.

At our application level, we could first have a Router to handle any requests to our albums.

const express = require('express');

algal

import UIKit

// known-good: Xcode 8.2.1

/**
 
 UIImageView subclass which works with Auto Layout to try 
 to maintain the same aspect ratio as the image it displays.
 
 This is unlike the usual behavior of UIImageView, where the 

tangxinfa

var fs          = require('fs'),
    express     = require('express'),
    app         = express();

function deleteFile (file) { 
    fs.unlink(file, function (err) {
        if (err) {
            console.error(err.toString());
        } else {
            console.warn(file + ' deleted');

destan

import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;

avdyushin

extension Character {
    var asciiValue: Int {
        get {
            let s = String(self).unicodeScalars
            return Int(s[s.startIndex].value)
        }
    }
}

palmerc

import UIKit
import CoreGraphics

func imageFromPixelValues(pixelValues: [UInt8]?, width: Int, height: Int) -> CGImage?
{
    var imageRef: CGImage?
    if pixelValues != nil {
        let imageDataPointer = UnsafeMutablePointer<UInt8>(pixelValues!)

        let colorSpaceRef = CGColorSpaceCreateDeviceGray()

ygotthilf

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub