merf

//I often want to typedef shared_pts to classes like:
typedef std::shared_ptr<CThing> TThingPtr;

//Figured it'd be easy to wrap this in a macro like:
#define SHARED_PTR(Name) typedef std::shared_ptr<C##Name> T##NamePtr;

//but:
SHARED_PTR(Thing)
TThingPtr p; //ERROR: Unknown type TThingPtr

merf

#include <stdio.h>

#include <AudioToolbox/AudioToolbox.h>
#include <Foundation/NSData.h>
#include <Foundation/NSAutoreleasePool.h>

// generic error handler - if result is nonzero, prints error message and exits program.
static void CheckResult(OSStatus result, const char *operation)
{
	if (result == noErr) return;

merf

#import "ViewController.h"
#import <AudioToolbox/AudioToolbox.h>
#import <AudioUnit/AudioUnit.h>

const int loop_length = 4;

@interface ViewController()

-(OSStatus) InitMIDI;