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Niall Kavanagh nkavanagh

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@vasanthk
vasanthk / System Design.md
Last active November 1, 2025 19:02
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
@jspahrsummers
jspahrsummers / GHRunLoopWatchdog.h
Created January 28, 2015 20:50
A class for logging excessive blocking on the main thread
/// 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
@mikeabdullah
mikeabdullah / MainViewController.m
Last active August 29, 2015 14:11
Encoding child view controllers in custom container
- (void)encodeRestorableStateWithCoder:(NSCoder *)coder {
[super encodeRestorableStateWithCoder:coder];
[coder encodeObject:self.contentViewController
forKey:@"contentViewController"];
}
@straup
straup / upload.js
Created September 22, 2014 13:21
// See also: http://www.aaronland.info/weblog/2014/09/22/desire/#upload
function upload_init(){
$("#upload-form").submit(function(){
try {
var photos = $("#photo");
var files = photos = photos[0].files;
@danielpunkass
danielpunkass / fsa.py
Last active July 22, 2018 02:50
A simple lldb module for adding an "fsa" command to inject F-Script anywhere into any process
"""
Automate loading of F-Script Anywhere into any app.
By Daniel Jalkut - @danielpunkass - http://indiestack.com/
To set up:
0. Make sure you have FScript.framework installed in /Library/Frameworks (http://www.fscript.org)
1. Copy this script to ~/.lldb/fsa.py
2. Add the following to your ~/.lldbinit file:
@adactio
adactio / postforms.js
Created March 2, 2014 23:42
Show a progress bar when a form is submitted (and prevent more than one submission per document).
/*
Show a progress element for any form submission via POST.
Prevent the form element from being submitted twice.
*/
(function (win, doc) {
'use strict';
if (!doc.querySelectorAll || !win.addEventListener) {
// doesn't cut the mustard.
return;
}
@nonsensery
nonsensery / page1.md
Created February 15, 2014 19:35
Splitting model objects into several entities

Some thoughts on this blog post by Brent Simmons

From the original:

A VSNote has more than a dozen properties. But the timeline needs only a few of those, and there would be performance and memory-use gains by using a smaller object. … In Core Data I could create two entities: VSTimelineNote and VSExtendedNote. VSTimelineNote would have a to-one relationship to VSExtendedNote. … [But that] means the data isn’t stored using the most natural representation. The data model would be based on the needs of the UI, which is not a good idea.

Putting aside Core Data for a moment, at issue is that each VSNote contains 8 or 10 attributes that are not needed to display the master list of notes; they are only needed to display the detail view for a note. Ideally, when displaying the list, we could load just the attributes used in the list into memory, and then load the rest when displaying the detail view. But realistically, a few bytes for a timestamp here

@dlo
dlo / Auto-layout-keyboard-adjustment.md
Last active February 26, 2021 07:33
How to adjust a view's height with Auto Layout when a keyboard appears or disappears in iOS 7.

This gist outlines how to resize a view when a keyboard appears using Auto Layout (there are a bunch of code samples out there that manually adjust the view's frame, but that's just so 2013). The method I outline below works universally on both iPhone and iPad, portrait and landscape, and is pretty darn simple.

Setting Up

The first thing to do is to define our containing view controller, the view, and the bottom constraint that we'll use to adjust its size.

Here's HeightAdjustingViewController.h. We don't need to expose any public properties, so it's pretty bare.




  


  




    


          
    

      

        
        

          

              @gmccreight
          

          

            
                gmccreight
                / master.vim
            
            

              Last active
              November 21, 2024 14:36
            

              
                A script that gives you a playground for mastering vim
              
          

        

      

        

  

    
    


        



  


  

        

          
          " copy all this into a vim buffer, save it, then...
        

        

          
          " source the file by typing :so %
        

        

          
          " Now the vim buffer acts like a specialized application for mastering vim
        

        

          
          

        

        

          
          " There are two queues, Study and Known.  Depending how confident you feel
        

        

          
          " about the item you are currently learning, you can move it down several
        

        

          
          " positions, all the way to the end of the Study queue, or to the Known
        

        

          
          " queue.
        

        

          
          

        

        

          
          " type ,, (that's comma comma)
        

  





    


  




    


          
    

      

        
        

          

              @shlomibabluki
          

          

            
                shlomibabluki
                / hashtagify.py
            
            

              Last active
              September 19, 2024 23:54
            

          

        

      

        

  

    
    


        



  


  

        

          
          # coding=UTF-8
        

        

          
          from __future__ import division
        

        

          
          import nltk
        

        

          
          from collections import Counter
        

        

          
          

        

        

          
          # This is a simple tool for adding automatic hashtags into an article title
        

        

          
          # Created by Shlomi Babluki
        

        

          
          # Sep, 2013