markd2

#import <Foundation/Foundation.h>

@interface BNRDiggyDict : NSObject

// React to object indexing.  Would be nice to have a @protocol for this
- (id) objectForKeyedSubscript: (id) key;
- (void) setObject: (id) thing  forKeyedSubscript: (id<NSCopying>) key;

// And for fun, it also can react to scalar indexing.
// Returns the N'th key of the top-level collection.

markd2

#import <Foundation/Foundation.h>
#import <mach/mach_time.h>  // for mach_absolute_time() and friends

// clang -g -Wall -framework Foundation -o equaltime equaltime.m
// clang -g -arch i386 -Wall -framework Foundation -o equaltime equaltime.m

CGFloat BNRTimeBlock (void (^block)(void)) {
    mach_timebase_info_data_t info;
    if (mach_timebase_info(&info) != KERN_SUCCESS) return -1.0;

markd2

#import <Foundation/Foundation.h>
#import <mach/mach_time.h>  // for mach_absolute_time() and friends

// clang -g -Wall -framework Foundation -o timestarts timestarts.m

CGFloat BNRTimeBlock (void (^block)(void)) {
    mach_timebase_info_data_t info;
    if (mach_timebase_info(&info) != KERN_SUCCESS) return -1.0;

    uint64_t start = mach_absolute_time ();

markd2

#import "stdio.h"

// clang -g -Wall -o scanstop scanstop.m

static short intArray[] = { 1, 1, 2, 3, 5, 7, 12, 19, 31 };

static char *ravenArray[] = { "once", "upon", "a", "midnight", "dreary" };

typedef struct Groovy {
    int value;

markd2

#import <Foundation/Foundation.h>

// clang -g -Wall -framework Foundation -o bool bool.m


// Are these two integers different?  YES if so, NO if not
// (even though it says YES and NO, it LIES!  Can actualy return a range
// of non-YES values)
static BOOL different (int thing1, int thing2) {

markd2

#import <Foundation/Foundation.h>

// clang -g -Wall -fobjc-arc -framework Foundation -o serial serial.m


static id makePlistObjects (void) {
    NSMutableDictionary *top = [NSMutableDictionary dictionary];

    [top setObject: @"Hi I'm a string"  forKey: @"string"];
    [top setObject: [NSNumber numberWithInt: 23]  forKey: @"number"];

markd2

#import <Foundation/Foundation.h>

// clang -fobjc-arc -Wall -Wformat -Weverything -Wno-format-nonliteral -framework Foundation -o log log.m

// Compiler likes explicit function prototypes prior to first use.
// Add an attribute to get additional checking from the compiler
extern void QuietLog (NSString *format, ...) __attribute__((format(__NSString__, 1, 2)));

// !!! The attribute above isn't warning like it should, but NSLog's _is_ working.
// This is NSLog's attribute.  I'm currently baffled.

markd2

#import <Foundation/Foundation.h>

// clang -Weverything -framework Foundation -o string-fun string-fun.m

int main (void) {
    @autoreleasepool {

        {
            // Split and join
            NSString *splitString = @"hello:-(there:-(everybody";

markd2

#import <Cocoa/Cocoa.h>

// clang -Weverything -fobjc-arc -framework Cocoa -o notification notification.m

void QuietLog (NSString *format, ...);
void StartSpying (void);
void StopSpying (void);


void QuietLog (NSString *format, ...) {

markd2

#import <Foundation/Foundation.h>

// clang -g -framework Foundation -o mutant mutant.m

int main (void) {
    NSMutableDictionary *mutable = [[NSMutableDictionary alloc] init];
    NSDictionary *immutable = [[NSDictionary alloc] init];

    NSLog (@"mutable responds to set object for key: %d",
           [mutable respondsToSelector: @selector(setObject:forKey:)]);