Skip to content

Instantly share code, notes, and snippets.

Rob Napier rnapier

Block or report user

Report or block rnapier

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
@rnapier
rnapier / gist:2837909
Created May 30, 2012
Trying to ignore a property with SMXObject
View gist:2837909
MyObject *one = [[MyObject alloc] init];
one.message = @"Hello World!";
one.intValue = 1;
MyObject *two = [MyObject objectFromArchive:[one archivedObject]];
NSLog(@"Retrieved Message: %@", two.message);
NSLog(@"Should be 0, but is 1: %d", two.intValue);
@interface MyObject : SMXObject
@rnapier
rnapier / JuliaOperation.h
Created Aug 13, 2012
Demonstration of NSOperationQueue w/ and w/o maxCurrentOperations
View JuliaOperation.h
#import <Foundation/Foundation.h>
#import <complex.h>
@interface JuliaOperation : NSOperation
@property (nonatomic, readwrite, assign) NSUInteger width;
@property (nonatomic, readwrite, assign) NSUInteger height;
@property (nonatomic, readwrite, assign) complex long double c;
@property (nonatomic, readwrite, assign) complex long double blowup;
@property (nonatomic, readwrite, assign) CGFloat contentScaleFactor;
@property (nonatomic, readwrite, assign) NSUInteger rScale;
@rnapier
rnapier / fix-xcode
Last active Aug 8, 2019
Links Xcode SDKs from the /SDKs directory (which you maintain yourself)
View fix-xcode
#!/usr/bin/python
# fix-xcode
# Rob Napier <robnapier@gmail.com>
# Script to link in all your old SDKs every time you upgrade Xcode
# Create a directory called /SDKs (or modify source_path).
# Under it, put all the platform directories:
# MacOSX.platform iPhoneOS.platform iPhoneSimulator.platform
# Under those, store the SDKs:
View Makefile
all: test
testa: source.o libA.a libB.a
g++ source.cpp -o test libA.a libB.a
testb:
g++ source.cpp -o test libB.a libA.a
libA.a: a.o aprime.o
ar -r libA.a a.o aprime.o
@rnapier
rnapier / gist:7515273
Created Nov 17, 2013
Exploration of thread priorities vs queue priorities
View gist:7515273
// Main thread priorty = 0.758065
NSLog(@"main:%@:%f", [NSThread currentThread], [NSThread threadPriority]);
// High priority = 0.532258
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
NSLog(@"high:%@:%f", [NSThread currentThread], [NSThread threadPriority]);
// run forever! Note that other queues still happily process, even though our high-priority block never ends
while(1) {}
});
@rnapier
rnapier / gist:8202731
Created Dec 31, 2013
Demonstrates that structs are not initialized under ARC. Run in Release.
View gist:8202731
int main(int argc, const char * argv[]) {
@autoreleasepool {
struct Stuff {
int x;
int y;
};
int x;
struct Stuff s;
printf("%d:%d\n", x, s.y);
@rnapier
rnapier / gist:8466934
Created Jan 17, 2014
Testing memory growth, optimized with standard Xcode settings (paste into Command Line app and hit Cmd-I)
View gist:8466934
#import <Foundation/Foundation.h>
int main(int argc, const char * argv[])
{
@autoreleasepool {
for(NSUInteger i = 0; i < 10000; i++)
{
for(NSUInteger j = 0; j < 10000; j++)
{
NSNumber* n = [NSNumber numberWithUnsignedInteger:j];
View resource-leak-or-not-mac-os-x.cpp
// Example for http://stackoverflow.com/questions/21699184/resource-leak-or-not-mac-os-x
#import <CoreServices/CoreServices.h>
#import <SystemConfiguration/SCDynamicStore.h>
#import <SystemConfiguration/SCDynamicStoreCopySpecific.h>
#include <iostream>
#include <thread>
void Execute()
{
View underscore.m
// With dot syntax (and standard Xcode indentation, just hit "Cmd-I")
NSArray *tweets = Underscore.array(results)
.filter(Underscore.isDictionary)
.reject(^BOOL (NSDictionary *tweet) {
return [tweet[@"iso_language_code"] isEqualToString:@"en"];
})
.map(^NSString *(NSDictionary *tweet) {
NSString *name = tweet[@"from_user_name"];
NSString *text = tweet[@"text"];
View dispatch-sync-safe.swift
func dispatch_sync<R> (queue: dispatch_queue_t, block: Void -> R ) -> R {
var result: R!
dispatch_sync(queue) {
result = block()
}
return result
}
func result() -> String {
return
You can’t perform that action at this time.