Skip to content

Instantly share code, notes, and snippets.

@wojteklu
wojteklu / clean_code.md
Last active July 16, 2024 18:14
Summary of 'Clean code' by Robert C. Martin

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.


General rules

  1. Follow standard conventions.
  2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
  3. Boy scout rule. Leave the campground cleaner than you found it.
  4. Always find root cause. Always look for the root cause of a problem.

Design rules

@shahdhiren
shahdhiren / P12toPEM.txt
Created September 9, 2016 14:57
Convert P12 file for Push Notification to PEM format
Development Phase:
Step 1: Create Certificate .pem from Certificate .p12
Command: openssl pkcs12 -clcerts -nokeys -out apns-dev-cert.pem -in apns-dev-cert.p12
Step 2: Create Key .pem from Key .p12
Command : openssl pkcs12 -nocerts -out apns-dev-key.pem -in apns-dev-key.p12
Step 3: Optional (If you want to remove pass phrase asked in second step)
Command : openssl rsa -in apns-dev-key.pem -out apns-dev-key-noenc.pem
@Catfish-Man
Catfish-Man / sethack.m
Created March 11, 2016 06:21
Demonstrating the trick of using stack-allocated mimics and sets for lookup tables instead of heap allocated keys and dictionaries
// Compile with clang -framework Foundation sethack.m
#import <Foundation/Foundation.h>
#import <objc/runtime.h>
/*
CFHashBytes from http://www.opensource.apple.com/source/CF/CF-1153.18/CFUtilities.c
*/
#define ELF_STEP(B) T1 = (H << 4) + B; T2 = T1 & 0xF0000000; if (T2) T1 ^= (T2 >> 24); T1 &= (~T2); H = T1;
@steipete
steipete / NullabilityMacros.h
Created February 25, 2015 23:22
Want nullability right away? This will degrade gracefully until you can drop Xcode 6.1/Xcode 6.2.
// Xcode 6.3 defines new language features to declare nullability
#if __has_feature(nullability)
#define PSPDF_ASSUME_NONNULL_BEGIN _Pragma("clang assume_nonnull begin")
#define PSPDF_ASSUME_NONNULL_END _Pragma("clang assume_nonnull end")
#define ps_nullable nullable
#define ps_nonnull nonnull
#define ps_null_unspecified null_unspecified
#define ps_null_resettable null_resettable
#define __ps_nullable __nullable
#define __ps_nonnull __nonnull
@genadyo
genadyo / gist:295a5e8f0d743f57137f
Created November 27, 2014 17:21
app_store_app_data.json
{
"491289025" : "ijinshan-kappmarket://",
"301521403" : "fb103361823069955://",
"492178411" : "ils492178411://",
"346142396" : "fb234434003713://",
"310633997" : "whatsapp://",
"370614765" : "com.condenet.newyorker://",
"325058491" : "rnmddisco://",
"382952264" : "epichttp://",
"477048487" : "predictwind://",
@staltz
staltz / introrx.md
Last active July 15, 2024 15:43
The introduction to Reactive Programming you've been missing
@pcperini
pcperini / BlockChaining.swift
Created June 5, 2014 20:12
Chain blocks for asynchronous, callback-based execution. Always ends in main queue.
operator infix ~> { associativity right }
@infix func ~>(firstBlock: (() -> Void), secondBlock: (() -> Void)) -> (() -> Void) {
return {
dispatch_async(dispatch_get_global_queue(-32768, 0), {
firstBlock()
dispatch_async(dispatch_get_main_queue(), secondBlock)
})
}
}
@gruber
gruber / Liberal Regex Pattern for Web URLs
Last active April 22, 2024 19:02
Liberal, Accurate Regex Pattern for Matching Web URLs
The regex patterns in this gist are intended only to match web URLs -- http,
https, and naked domains like "example.com". For a pattern that attempts to
match all URLs, regardless of protocol, see: https://gist.github.com/gruber/249502
# Single-line version:
(?i)\b((?:https?:(?:/{1,3}|[a-z0-9%])|[a-z0-9.\-]+[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|s
@chrismiles
chrismiles / reveal.py
Last active September 2, 2021 00:26
Lazy script to wrap Reveal lib load/start commands in one LLDB command.
""" File: reveal.py
Add to ~/.lldbinit:
command script import ~/.lldb-scripts/reveal.py
Q: Want to automatically load the Reveal lib on launch while debugging from Xcode?
A: In Xcode:
Add a Symbolic Breakpoint
Symbol: "UIApplicationMain"
Action: Debugger Command with value "reveal"
@krzyzanowskim
krzyzanowskim / define_for_all_pods
Last active March 26, 2020 09:42
Disable NSLog with all CocoaPods with post_install hook.
post_install do | installer |
print "Updating #{installer.sandbox.target_support_files_root}/Pods/Pods-environment.h\n"
open("#{installer.sandbox.target_support_files_root}/Pods/Pods-environment.h","a") do |file|
file.puts <<EOF
// Disable logs
#ifndef DEBUG
#define NSLog(...)
#endif
EOF
end