(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
MANIAK_dobrii maniak-dobrii
chrismiles
/ reveal.py
Last active
September 2, 2021 00:26
Lazy script to wrap Reveal lib load/start commands in one LLDB command.
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| """ 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" |
gruber
/ Liberal Regex Pattern for Web URLs
Last active
April 22, 2025 16:56
Liberal, Accurate Regex Pattern for Matching Web URLs
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| 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 |
pcperini
/ BlockChaining.swift
Created
June 5, 2014 20:12
Chain blocks for asynchronous, callback-based execution. Always ends in main queue.
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| 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) | |
| }) | |
| } | |
| } |
staltz
/ introrx.md
Last active
June 8, 2025 22:15
The introduction to Reactive Programming you've been missing
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| { | |
| "491289025" : "ijinshan-kappmarket://", | |
| "301521403" : "fb103361823069955://", | |
| "492178411" : "ils492178411://", | |
| "346142396" : "fb234434003713://", | |
| "310633997" : "whatsapp://", | |
| "370614765" : "com.condenet.newyorker://", | |
| "325058491" : "rnmddisco://", | |
| "382952264" : "epichttp://", | |
| "477048487" : "predictwind://", |
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.
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| // 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 |
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
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| // 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; |
shahdhiren
/ P12toPEM.txt
Created
September 9, 2016 14:57
Convert P12 file for Push Notification to PEM format
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| 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 |
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.
- Follow standard conventions.
- Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
- Boy scout rule. Leave the campground cleaner than you found it.
- Always find root cause. Always look for the root cause of a problem.
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