honood

Here's a list of mildly interesting things about the C language that I learned mostly by consuming Clang's ASTs. Although surprises are getting sparser, I might continue to update this document over time.

There are many more mildly interesting features of C++, but the language is literally known for being weird, whereas C is usually considered smaller and simpler, so this is (almost) only about C.

1. Combined type and variable/field declaration, inside a struct scope [https://godbolt.org/g/Rh94Go]

struct foo {
   struct bar {
 int x;

honood

In this article we compared different behavior of static, inline and static inline free functions in compiled binary. All the following test was done under g++ 7.1.1 on Linux amd64, ELF64.

Test sources

header.hpp

#pragma once

inline int only_inline() { return 42; }
static int only_static() { return 42; }

honood

import UIKit

protocol CommandExecuting {
    func run(commandName: String, arguments: [String]) throws -> String
}

enum BashError: Error {
    case commandNotFound(name: String)
}

honood

//
//  JAZMusician.h
//  JazzyApp
//

#import <Foundation/Foundation.h>

/**
 JAZMusician models, you guessed it... Jazz Musicians!
 From Ellington to Marsalis, this class has you covered.

honood

// I wanted an equivalent to Ruby's `tap` (http://ruby-doc.org/core-2.3.0/Object.html#method-i-tap) in Swift which I could mix into any type to tap into method chains.

// Define the interface we want to provide as a protocol
private protocol Tap {
    func tap(block: (Self) -> Void) -> Self
}

// Extend the `Tap` protocol with a default implementation
private extension Tap {
    func tap(block: (Self) -> Void) -> Self {

honood

YARD CHEATSHEET http://yardoc.org

cribbed from http://pastebin.com/xgzeAmBn

Templates to remind you of the options and formatting for the different types of objects you might want to document using YARD.

Modules

Namespace for classes and modules that handle serving documentation over HTTP

honood

YARD CHEATSHEET http://yardoc.org

cribbed from http://pastebin.com/xgzeAmBn

Templates to remind you of the options and formatting for the different types of objects you might want to document using YARD.

Modules

Namespace for classes and modules that handle serving documentation over HTTP

honood

#!/usr/bin/env ruby

require 'optparse'
require 'pathname'
require 'open3'

# This tool checks an input path for all static libraries *.a files 
# and makes sure they were built with the most modern ObjC ABI version.

# Parse command line options.

honood

true and false vs. "truthy" and "falsey" (or "falsy") in Ruby, Python, and JavaScript

Many programming languages, including Ruby, have native boolean (true and false) data types. In Ruby they're called true and false. In Python, for example, they're written as True and False. But oftentimes we want to use a non-boolean value (integers, strings, arrays, etc.) in a boolean context (if statement, &&, ||, etc.).

This outlines how this works in Ruby, with some basic examples from Python and JavaScript, too. The idea is much more general than any of these specific languages, though. It's really a question of how the people designing a programming language wants booleans and conditionals to work.

If you want to use or share this material, please see the license file, below.

Update

honood

# sudo rm -rf /Library/Frameworks/Python.framework
sudo rm -rf /Library/Frameworks/Python.framework/Versions/2.7
sudo rm -rf "/Applications/Python 2.7"

cd /usr/local/bin && \
sudo ls -l /usr/local/bin | grep '../Library/Frameworks/Python.framework/Versions/2.7' | awk '{print $9}' | xargs rm