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@cppforlife
cppforlife / gist:3731520
Created September 16, 2012 08:09
log all notifications going through NSNotificationCenter
void MyCallBack (CFNotificationCenterRef center,
void *observer,
CFStringRef name,
const void *object,
CFDictionaryRef userInfo)
{
NSLog(@"---\n name: %@\n info: %@", name, userInfo);
}
CFNotificationCenterAddObserver(CFNotificationCenterGetLocalCenter(), NULL, MyCallBack, NULL, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);
@Hupotronic
Hupotronic / h264-vs-vp8-test.md
Last active May 11, 2024 18:19
H.264 & VP8 Quality Comparison And Some Words on Future Video Formats

VP8 vs H.264 - Which One is Better?

So I was reading Hacker News and decided to read the comments in the thread about H.265 being approved. Pretty close to the top was this comment about VP9, Google's future video format. I have some words of my own about it and other future formats at the bottom of this post, but what jumped out from the comment to me was this part:

Many have already implemented VP8 (which is also slightly better than h.264 at this point)

The comparison linked to back up that statement is faulty for several reasons, such as not providing the source material used (hell, he doesn't even name the source material), exact encoding settings used (no, some random profiles are not enough), not providing the resulting encodes, only providing a

@mikelikespie
mikelikespie / NSData+PIOAdditions.h
Created February 14, 2013 06:35
Zero-Copy bridging between dispatch_data_t and NSData
//
// NSData+PIOAdditions.h
// PonyExpress
//
// Created by Michael Lewis on 2/13/13.
//
//
#import <Foundation/Foundation.h>
@MLnick
MLnick / MovieSimilarities.scala
Created April 1, 2013 17:49
Movie Similarities with Spark
import spark.SparkContext
import SparkContext._
/**
* A port of [[http://blog.echen.me/2012/02/09/movie-recommendations-and-more-via-mapreduce-and-scalding/]]
* to Spark.
* Uses movie ratings data from MovieLens 100k dataset found at [[http://www.grouplens.org/node/73]]
*/
object MovieSimilarities {
@mrflip
mrflip / 20130416-todo.md
Last active April 22, 2025 14:33
Elasticsearch Tuning Plan

Next Steps

  • Measure time spend on index, flush, refresh, merge, query, etc. (TD - done)
  • Take hot threads snapshots under read+write, read-only, write-only (TD - done)
  • Adjust refresh time to 10s (from 1s) and see how load changes (TD)
  • Measure time of a rolling restart doing disable_flush and disable_recovery (TD)
  • Specify routing on query -- make it choose same node for each shard each time (MD)
  • GC new generation size (TD)
  • Warmers
  • measure before/after of client query time with and without warmers (MD)
@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>
@dodyg
dodyg / gist:5823184
Last active May 7, 2025 20:27
Kotlin Programming Language Cheat Sheet Part 1

#Intro

Kotlin is a new programming language for the JVM. It produces Java bytecode, supports Android and generates JavaScript. The latest version of the language is Kotlin M5.3

Kotlin project website is at kotlin.jetbrains.org.

All the codes here can be copied and run on Kotlin online editor.

Let's get started.

@steipete
steipete / PSPDFThreadSafeMutableDictionary.m
Last active January 20, 2025 07:33
Simple implementation of a thread safe mutable dictionary. In most cases, you want NSCache instead, but it can be useful in situations where you want to manually control what is evicted from the cache in low memory situations.**Warning:** I only use this for setting/getting keys. Enumeration is not thread safe here and will still throw exception…
//
// PSPDFThreadSafeMutableDictionary.m
//
// Copyright (c) 2013 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
//
// 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, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
@robmiller
robmiller / .gitconfig
Created July 17, 2013 07:52
Some useful Git aliases that I use every day
#
# Working with branches
#
# Get the current branch name (not so useful in itself, but used in
# other aliases)
branch-name = "!git rev-parse --abbrev-ref HEAD"
# Push the current branch to the remote "origin", and set it to track
# the upstream branch
publish = "!git push -u origin $(git branch-name)"
@uupaa
uupaa / iOS7.changeset.md
Last active December 21, 2015 22:19
iOS7 changeset

iOS 7 に該当する WebKit Changeset(151723 - 152697) を調査しました

Summary

  • 151951 Add support for document.currentScript
  • 151914 WaveTable name has changed to PeriodicWave
  • 149173 mouseenter, mouseleave イベントのサポート
  • 149159 Math.imul のサポート
  • 151298 canvas#supportsContext のサポート
  • 151558 WebAudio にユーザイベントを経由せず noteOn した場合に音が鳴らないように制限を追加(in iOS)
  • 151101 AudioBufferSourceNode の "onended" イベントのサポート