tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

sgdan

import java.io.ByteArrayOutputStream
import java.io.File
import java.nio.charset.StandardCharsets.UTF_8
import java.util.zip.GZIPInputStream
import java.util.zip.GZIPOutputStream

fun gzip(content: String): ByteArray {
    val bos = ByteArrayOutputStream()
    GZIPOutputStream(bos).bufferedWriter(UTF_8).use { it.write(content) }
    return bos.toByteArray()

zonble

#import <Foundation/Foundation.h>

@interface KKSimpleAirPlay2Player : NSObject

- (id)initWithURL:(NSURL *)inURL;
- (void)play;
- (void)pause;
@property (readonly, getter=isStopped) BOOL stopped;

@end

KatelynHaworth

package main

import (
	"log"
	"syscall"
	"unsafe"

	"golang.org/x/sys/windows"
)

Llorx

From c259a69c7e75f29d45fd0bbf47899d15e71e2e79 Mon Sep 17 00:00:00 2001
From: Llorx <dallorx@gmail.com>
Date: Sat, 6 Aug 2016 14:34:50 +0200
Subject: [PATCH] Bitrate on-the-fly PoC

---
 ffmpeg.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 74 insertions(+), 1 deletion(-)

diff --git a/ffmpeg.c b/ffmpeg.c

tewilove

#include <android/log.h>
#include <jni.h>
#include <binder/Binder.h>
#include <binder/Parcel.h>
#include <binder/IServiceManager.h>
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

lrytz

Shortcut for Syntax Highlighting in Keynote

The idea is based on a gist by @jimbojsb.

You can use Pygments or Highlight.

Install Pygments

brew install python

adelcambre

Some basics on Tokyo

Your phone should work

Just like in Europe. It's the same normal international data plan for most carriers (I've done it on At&t and Verizon).

Cash is king

And you get cash from 7-11 (yes I'm serious). American cards very very frequently don't work. Especially in any sort of machine, particularly vending machines and the train ticket machines. Many atm's won't take american cards either. But, every single 7-11 (which are everywhere) has an atm which takes american cards. They sometimes say 7-i, or Seven and i holdings. It's all the same thing (7-11 is actually a japanese company, and they are everywhere). Other than 7-11, every Post office should have an ATM that works too, but they are way less common.

svagionitis

#!/bin/bash
# Create an Iframe index from HLS segmented streams
# $1: Filename to be created
# $2: Location of segmented ts files

# Check how many arguments
if [ $# != 2 ]; then
    echo "Usage: $0 [Input filename] [Location of segmented streams]"
    exit 1;
fi

joestump

San Francisco by Foot

• You can start anywhere in the Castro, Mission (home of the burrito), or downtown. I'd recommend starting at Chow at Market & Church or The Pork Store on 16th at Valencia. If you wanted to go upscale on the weekend, Maverick at 17th and Mission is a fantastic brunch. Another option is to start in Chinatown (just north of Union Squre) for dim sum.
• From Castro take one of the N, J, etc. trains (every light rail train route in the city intersects at Church and Market) down to the Powell Street station. From the Mission you can take BART a couple of stops up to Powell Street.
• Once at Powell Street hop on the Powell Street trolley. A quintessential SF experience.
• Take the trolley up through the city where it will eventually stop at Lombard Street, which is known as the most crooked street in the world. Walk down the hill, take a few pictures and laugh at the tourists trying to drive down the damn thing.
• Once at the bottom of the hill, turn left. You'll be walking towards the w