yhilpisch

Machine Learning for Finance

A CQF elective with Dr. Yves J. Hilpisch, The Python Quants GmbH

General resources:

• http://tpq.io

nikmartin

Secure sessions are easy, but not very well documented.  
Here's a recipe for secure sessions in Node.js when NginX is used as an SSL proxy:

The desired configuration for using NginX as an SSL proxy is to offload SSL processing 
and to put a hardened web server in front of your Node.js application, like:

[NODE.JS APP] <- HTTP -> [NginX] <- HTTPS -> [PUBLIC INTERNET] <-> [CLIENT]

Edit for express 4.X and >:  Express no longer uses Connect as its middleware framework, it implements its own now. 

brentsimmons

@implementation UITextView (RSExtras)


static BOOL stringCharacterIsAllowedAsPartOfLink(NSString *s) {

    /*[s length] is assumed to be 0 or 1. s may be nil.
     Totally not a strict check.*/

    if (s == nil || [s length] < 1)
        return NO;

steipete

// Defines a yet undocumented method to add a warning if super isn't called.
#ifndef NS_REQUIRES_SUPER
#if __has_attribute(objc_requires_super)
#define NS_REQUIRES_SUPER __attribute((objc_requires_super))
#else
#define NS_REQUIRES_SUPER
#endif
#endif

@interface UIViewController (SubclassingWarnings)

beccadax

#import <Foundation/Foundation.h>

@interface NSNumber (range)

- (NSIndexSet*):(NSUInteger)max;
- (NSIndexSet*):(NSUInteger)max step:(NSUInteger)step;

@end

erikh

#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#

peternixey

##How Homakov hacked GitHub and the line of code that could have prevented it

---

Please note: THIS ARTICLE IS NOT WRITTEN BY THE GITHUB TEAM or in any way associated with them. It's simply hosted as a Gist because the markdown formatting is excellent and far clearer than anything I could manage on my personal Tumblr at peternixey.com.

If you'd like to follow me on twitter my handle is @peternixey

---

wearhere

#! /bin/sh

# On alternate invocations, this script 
# saves the path of the source file currently open in Xcode
# and restores the file at that path in Xcode.
#
# By setting Xcode (in Behaviors) to run this script when "Run Starts" 
# and when "Run Completes", you can prevent it from switching to main.m 
# when a run finishes.
# See http://stackoverflow.com/questions/7682277/xcode-4-2-jumps-to-main-m-every-time-after-stopping-simulator 

hiddenmemory

- (NSArray*)listOfNames {
    
	NSFetchRequest *request = [[NSFetchRequest alloc] init];
	
	[request setEntity:[NSEntityDescription entityForName:@"SomeObject" inManagedObjectContext:self.managedObjectContext]];
	
	[request setResultType:NSDictionaryResultType];
	[request setPropertiesToFetch:[NSArray arrayWithObject:@"name"]];
	[request setPropertiesToGroupBy:[NSArray arrayWithObject:@"name"]];
	[request setPredicate:[NSPredicate predicateWithFormat:@"type = %@", @"static"]];

Abizern

- (NSString *)uuidString {
    // Returns a UUID
    
    CFUUIDRef uuid = CFUUIDCreate(kCFAllocatorDefault);
    NSString *uuidStr = (__bridge_transfer NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuid);
    CFRelease(uuid);
    
    return uuidStr;
}