dsabanin

defaults write com.apple.dt.Xcode ShowDVTDebugMenu -bool YES
sudo mkdir -p /Applications/Xcode.app/Contents/Developer/AppleInternal/Library/Xcode
sudo touch /Applications/Xcode.app/Contents/Developer/AppleInternal/Library/Xcode/AppleInternal.plist

# Don't forget to restart Xcode

marmoy

//===----------------------------------------------------------------------===//
//
// This source file is a modification of the PropertyListEncoder from the Swift project.
// The modification consists of skipping the final serialization into binary format (in the encode function) and instead returning the dictionary representation of the object to be encoded.
//
//===----------------------------------------------------------------------===//

import Foundation

//===----------------------------------------------------------------------===//

ddunbar

# Enable timings on build operations
defaults write com.apple.dt.Xcode ShowBuildOperationDuration -bool YES

# Enable extensive per-task timings
defaults write com.apple.dt.Xcode IDEBuildOperationTimingLogLevel -int 3

# Enable old build system logging for "implicit dependencies"
defaults write com.apple.dt.Xcode IDEBuildOperationDependenciesLogLevel -int 3

# Show logs from the "prebuild" step

ddunbar

New Build System Tricks

Command Line

alias xcbuild=$(xcode-select -p)/../SharedFrameworks/XCBuild.framework/Versions/A/Support/xcbuild
# THIS DOESNT WORK YET: xcbuild openIDEConsole  # … then switch to Xcode ➡️
xcbuild showSpecs
xcbuild build <foo.pif> [—target <target>]

mackuba

Here's my own list of the interesting stuff announced during this year's WWDC, collected from the keynotes, various Apple docs, blog posts and tweets.

If you're planning to watch the videos, I really recommend this Mac app that helps you download and watch them: https://github.com/insidegui/WWDC.

OS X El Capitan

http://www.apple.com/osx/elcapitan-preview/

• split view - two apps side by side on full screen

smirn0v

$ cd /Applications/Xcode6-Beta5.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/
# choose your platform
$ cd 7.1
# mount developer disk image
$ hdiutil attach DeveloperDiskImage.dmg
# copy debugserver
$ cp /Volumes/DeveloperDiskImage/usr/bin/debugserver ~/
$ cd ~/
# prepare entitlements
$ cat > entitlements.plist << 'EOF'

steipete

/// Performs `block` immediately and ignores subsequent calls during the same runloop.
#define pspdf_ensureCalledOnlyOncePerRunloop(block) do { \
static const char __onceKey; _pspdf_ensureCalledOnlyOncePerRunloop(self, &__onceKey, block); } while(0)
extern void _pspdf_ensureCalledOnlyOncePerRunloop(id self, const void *key, dispatch_block_t block);

void _pspdf_ensureCalledOnlyOncePerRunloop(id self, const void *key, dispatch_block_t block) {
    NSCParameterAssert(block);
    NSCParameterAssert(self);
    PSPDFAssertOnMainThread(); // run loop needs the main thread.

jspahrsummers

/// Observes a run loop to detect any stalling or blocking that occurs.
///
/// This class is thread-safe.
@interface GHRunLoopWatchdog : NSObject

/// Initializes the receiver to watch the specified run loop, using a default
/// stalling threshold.
- (id)initWithRunLoop:(CFRunLoopRef)runLoop;

/// Initializes the receiver to detect when the specified run loop blocks for

chendo

import lldb
import re
import shlex

# This script allows Xcode to selectively ignore Obj-C exceptions
# based on any selector on the NSException instance

def getRegister(target):
    if target.triple.startswith('x86_64'):
        return "rdi"

steipete

// Taken from http://PSPDFKit.com. This snippet is under public domain.
#define UIKitVersionNumber_iOS_7_0 0xB57
BOOL PSPDFIsUIKitFlatMode(void) {
    static BOOL isUIKitFlatMode = NO;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        // We get the modern UIKit if system is running >= iOS 7 and we were linked with >= SDK 7.
        if (kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iOS_7_0) {
            isUIKitFlatMode = (NSVersionOfLinkTimeLibrary("UIKit") >> 16) >= UIKitVersionNumber_iOS_7_0;
        }