dabrahams

$ echo 'public func f() { print("YES") }' > x.swift
$ swiftc -emit-library -emit-module -module-link-name x  x.swift
$ swift -L . -I .
Welcome to Apple Swift version 5.4 (swiftlang-1205.0.26.9 clang-1205.0.19.55).
Type :help for assistance.
  1> import x
import x
  2> f()
f()

acrookston

Automatic build versions from git in Xcode (and other goodies)

Installation procedure for pre-build actions to automatically populate Xcode Info.plist with dynamic data.

1. Xcode Scheme pre-action

Edit Xcode Scheme and add a pre-action script. Copy the contents of preaction.sh into the pre-action script box.

kaishin

extension NSView {
  var snapshot: NSImage {
    guard let bitmapRep = bitmapImageRepForCachingDisplayInRect(bounds) else { return NSImage() }
    bitmapRep.size = bounds.size
    cacheDisplayInRect(bounds, toBitmapImageRep: bitmapRep)
    let image = NSImage(size: bounds.size)
    image.addRepresentation(bitmapRep)
    return image
  }
}

eliburke

//
// NSUUID+uuid5.h
//
// MIT License (aka, do with it what you want)
//
// Copyright (c) 2015 Eli Burke eburke@pobox.com
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
// and associated documentation files (the "Software"), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify, merge, publish, distribute,

ajayjapan

@interface UICollectionViewFlowLayout (InvalidateOnBoundsChange)
@end

@implementation UICollectionViewFlowLayout (InvalidateOnBoundsChange)

- (UICollectionViewLayoutInvalidationContext *)invalidationContextForBoundsChange:(CGRect)newBounds {
  UICollectionViewLayoutInvalidationContext *context = [super invalidationContextForBoundsChange:newBounds];
  
  CGRect oldBounds = self.collectionView.bounds;
  CGFloat widthAdjustment = newBounds.size.width - oldBounds.size.width;

bunnyhero

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{    
    UITableViewCell *cell =
        [tableView dequeueReusableCellWithIdentifier:REUSABLE_CELL_ID];

    UILabel *label = (UILabel *)[cell viewWithTag:VIEW_TAG];
    Model *someModel = [self getModelFromIndexPath:indexPath];
    
    //  `takeUntil:` makes the RACObserve() signal complete (and thus breaks the subscription)
    //  when the cell is recycled.

lfender6445

Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

bradmontgomery

#!/usr/bin/env python
"""
Very simple HTTP server in python (Updated for Python 3.7)

Usage:

    ./dummy-web-server.py -h
    ./dummy-web-server.py -l localhost -p 8000

Send a GET request: