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@matthewmccullough
matthewmccullough / .zshrc
Created January 20, 2011 00:00
A configuration to maintain history across sessions and share it across terminals in ZShell
##############################################################################
# History Configuration
##############################################################################
HISTSIZE=5000 #How many lines of history to keep in memory
HISTFILE=~/.zsh_history #Where to save history to disk
SAVEHIST=5000 #Number of history entries to save to disk
#HISTDUP=erase #Erase duplicates in the history file
setopt appendhistory #Append history to the history file (no overwriting)
setopt sharehistory #Share history across terminals
setopt incappendhistory #Immediately append to the history file, not just when a term is killed
@jboner
jboner / latency.txt
Last active July 23, 2024 10:32
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@brandonb927
brandonb927 / osx-for-hackers.sh
Last active July 20, 2024 05:10
OSX for Hackers: Yosemite/El Capitan Edition. This script tries not to be *too* opinionated and any major changes to your system require a prompt. You've been warned.
#!/bin/sh
###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###
# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx
@markd2
markd2 / BlahView.m
Created September 17, 2012 20:07
A simple UIView that draws itself in a color based on its address in memory.
@interface BlahView : UIView
@end
@implementation BlahView
- (void) drawRect: (CGRect) rect {
CGRect bounds = self.bounds;
UIColor *color = [UIColor colorWithRed: (((int)self) & 0xFF) / 255.0
@ttscoff
ttscoff / PressReleaseBoilerplate.md
Created September 30, 2012 01:24
Simplistic press release boilerplate for apps
FOR IMMEDIATE RELEASE

## AppName vX.X does something interesting

AppName vX.X is on the App Store now, and features the following very interesting feature. This is a summary, so I'm focusing on the lead. Just something to make me want to read the rest. Done.

City, State/Country - [Company/Developer] has released AppName vX.X, available in the Mac App Store. AppName is/does [broad, general strokes]. [A few more specific points about who it's for and why it's of benefit to them].

New features!
@klange
klange / _.md
Last active May 23, 2024 13:45
It's a résumé, as a readable and compilable C source file. Since Hacker News got here, this has been updated to be most of my actual résumé. This isn't a serious document, just a concept to annoy people who talk about recruiting and the formats they accept résumés in. It's also relatively representative of my coding style.

Since this is on Hacker News and reddit...

  • No, I don't distribute my résumé like this. A friend of mine made a joke about me being the kind of person who would do this, so I did (the link on that page was added later). My actual résumé is a good bit crazier.
  • I apologize for the use of _t in my types. I spend a lot of time at a level where I can do that; "reserved for system libraries? I am the system libraries".
  • Since people kept complaining, I've fixed the assignments of string literals to non-const char *s.
  • My use of type * name, however, is entirely intentional.
  • If you're using an older compiler, you might have trouble with the anonymous unions and the designated initializers - I think gcc 4.4 requires some extra braces to get them working together. Anything reasonably recent should work fine. Clang and gcc (newer than 4.4, at le
@rnystrom
rnystrom / gist:4733270
Created February 7, 2013 19:03
Small category I wrote to simplify displaying a UIImagePickerController, asking where the image should come from, and then running all the stuff. Just setup a UIImagePickerControllerDelegate and forget all of the UIActionSheet business.
// UIImagePickerController+ImageTypeActionSheet.h
@interface UIImagePickerController (ImageTypeActionSheet)
- (void)promptImagePickerTypeWithText:(NSString*)text titles:(NSArray*)titles delegate:(id <UIImagePickerControllerDelegate,UINavigationControllerDelegate>)delegate;
@end
// UIImagePickerController+ImageTypeActionSheet.m
@interface ImageTypeActionSheetDelegate : NSObject
<UIActionSheetDelegate>
@steipete
steipete / PSPDFUIKitMainThreadGuard.m
Last active May 27, 2024 12:11
This is a guard that tracks down UIKit access on threads other than main. This snippet is taken from the commercial iOS PDF framework http://pspdfkit.com, but relicensed under MIT. Works because a lot of calls internally call setNeedsDisplay or setNeedsLayout. Won't catch everything, but it's very lightweight and usually does the job.You might n…
// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.
// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.
#import <objc/runtime.h>
#import <objc/message.h>
@appsandwich
appsandwich / gist:6007702
Created July 16, 2013 10:50
iOS - Simulate on-device memory warnings using volume button press
#if DEBUG
#import <MediaPlayer/MediaPlayer.h>
#endif
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
#if DEBUG
// Debug code that lets us simulate memory warnings by pressing the device's volume buttons.
@calebd
calebd / ArrayHelpers.swift
Last active November 4, 2022 15:17
Swift Helpers
extension Array {
func first() -> Element? {
if isEmpty {
return nil
}
return self[0]
}
func last() -> Element? {