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## libdispatch-efficiency-tips.md

      
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                tclementdev
                / libdispatch-efficiency-tips.md
            
            
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                Making efficient use of the libdispatch (GCD)
              
          
    libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).
My take-aways are:


You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.


Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse


## measurepi.sh
#!/bin/bash
# This bash script outputs the status of your Pi and checks whether you are being throttled for undervoltage and gives you your temperature
# Article and discussion at https://jamesachambers.com/measure-raspberry-pi-undervoltage-true-clock-speeds/
# Author James A Chambers 6-6-17

# Output current configuration
vcgencmd get_config int | egrep "(arm|core|gpu|sdram)_freq|over_volt"

# Measure clock speeds
for src in arm core h264 isp v3d; do echo -e "$src:\t$(vcgencmd measure_clock $src)"; done

## Android Privacy Policy Template
<html>
<body>
<h2>Privacy Policy</h2>
<p>[Individual or Company Name] built the [App Name] app as a [open source | free | freemium | ad-supported | commercial] app. This SERVICE is provided by [Individual or company name] [at no cost] and is intended
    for use as is.</p>
<p>This page is used to inform website visitors regarding [my|our] policies with the collection, use, and
    disclosure of Personal Information if anyone decided to use [my|our] Service.</p>
<p>If you choose to use [my|our] Service, then you agree to the collection and use of information in
    relation with this policy. The Personal Information that [I|we] collect are used for providing and
    improving the Service. [I|We] will not use or share your information with anyone except as described

## libz.sh
# Builds a ZLib framework for the iPhone and the iPhone Simulator.
# Creates a set of universal libraries that can be used on an iPhone and in the
# iPhone simulator. Then creates a pseudo-framework to make using libz in Xcode
# less painful.
#
# To configure the script, define:
#    IPHONE_SDKVERSION: iPhone SDK version (e.g. 8.1)
#
# Then go get the source tar.bz of the libz you want to build, shove it in the
# same directory as this script, and run "./libz.sh". Grab a cuppa. And voila.

## README.md

      
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                acrookston
                / README.md
            
            
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              January 26, 2022 11:05
            
              
                Xcode pre-action to build custom Info.plist
              
          
    Automatic build versions from git in Xcode (and other goodies)

Installation procedure for pre-build actions to automatically populate Xcode Info.plist with dynamic data.
1. Xcode Scheme pre-action

Edit Xcode Scheme and add a pre-action script.
Copy the contents of preaction.sh into the pre-action script box.


## UIImageFixedOrientationExtension.swift
extension UIImage {

    func fixedOrientation() -> UIImage {

        if imageOrientation == UIImageOrientation.Up {
            return self
        }

        var transform: CGAffineTransform = CGAffineTransformIdentity


## mainpython.md

      
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                rochacbruno
                / mainpython.md
            
            
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              July 22, 2024 19:03
            
              
                Use of __main__.py
              
          
    The use of __main__.py to create executables
myprojectfolder/
    |_ __main__.py
    |_ __init__.py

Being __main__.py:
print("Hello")

  
## FRP iOS Learning resources.md

      
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                JaviLorbada
                / FRP iOS Learning resources.md
            
            
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              June 17, 2024 06:08
            
              
                The best FRP iOS resources. 
              
          
    Videos


Introduction to Functional Programming Johannes Weiß - https://vimeo.com/100786088
ReactiveCocoa at MobiDevDay Andrew Sardone -  https://vimeo.com/65637501
The Future Of ReactiveCocoa Justin Spahr-Summers - https://www.youtube.com/watch?v=ICNjRS2X8WM
Enemy of the State Justin Spahr-Summers - https://www.youtube.com/watch?v=7AqXBuJOJkY
WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak -  https://developer.apple.com/videos/play/wwdc2014/229/
Functioning as a Functionalist Andy Matuschak - https://www.youtube.com/watch?v=rJosPrqBqrA
Controlling Complexity in Swift Andy Matuschak - https://realm.io/news/andy-matuschak-controlling-complexity/


## re-sign-ios-app.md

      
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              73 stars
            
          
                chaitanyagupta
                / re-sign-ios-app.md
            
            
              Last active
              October 20, 2023 08:28
            
              
                How to re-sign an iOS app with another developer account
              
          
    WARNING These steps are probably out dated and will not work.
To re-sign an iOS app with another developer account, ensure that the following are in place first.

Distribution certificate of the other developer account
A provisioning profile from the other developer account

Note that the Apple requires bundle IDs to be globally unique, even across accounts. So a bundle ID i.e. CFBundleIdentifier from one account can't be used in a different account, even though the team id/prefix would be different.
Ensure that the new distribution certificate is in your keychain and the new provisioning profile on your disk.

  
## gist:9318327
Convention: Byte array notation as it would appear in a hexeditor.

= Layout=

KDBX files, the keepass database files, are layout as follows:

1) Bytes 0-3: Primary identifier, common across all kdbx versions:
  private static $sigByte1=[0x03,0xD9,0xA2,0x9A];

2) Bytes 4-7: Secondary identifier. Byte 4 can be used to identify the file version (0x67 is latest, 0x66 is the KeePass 2 pre-release format and 0x55 is KeePass 1)
	#!/bin/bash
	# This bash script outputs the status of your Pi and checks whether you are being throttled for undervoltage and gives you your temperature
	# Article and discussion at https://jamesachambers.com/measure-raspberry-pi-undervoltage-true-clock-speeds/
	# Author James A Chambers 6-6-17

	# Output current configuration
	vcgencmd get_config int \| egrep "(arm\|core\|gpu\|sdram)_freq\|over_volt"

	# Measure clock speeds
	for src in arm core h264 isp v3d; do echo -e "$src:\t$(vcgencmd measure_clock $src)"; done
	<html>
	<body>
	<h2>Privacy Policy</h2>
	<p>[Individual or Company Name] built the [App Name] app as a [open source \| free \| freemium \| ad-supported \| commercial] app. This SERVICE is provided by [Individual or company name] [at no cost] and is intended
	for use as is.</p>
	<p>This page is used to inform website visitors regarding [my\|our] policies with the collection, use, and
	disclosure of Personal Information if anyone decided to use [my\|our] Service.</p>
	<p>If you choose to use [my\|our] Service, then you agree to the collection and use of information in
	relation with this policy. The Personal Information that [I\|we] collect are used for providing and
	improving the Service. [I\|We] will not use or share your information with anyone except as described
	# Builds a ZLib framework for the iPhone and the iPhone Simulator.
	# Creates a set of universal libraries that can be used on an iPhone and in the
	# iPhone simulator. Then creates a pseudo-framework to make using libz in Xcode
	# less painful.
	#
	# To configure the script, define:
	# IPHONE_SDKVERSION: iPhone SDK version (e.g. 8.1)
	#
	# Then go get the source tar.bz of the libz you want to build, shove it in the
	# same directory as this script, and run "./libz.sh". Grab a cuppa. And voila.
	extension UIImage {

	func fixedOrientation() -> UIImage {

	if imageOrientation == UIImageOrientation.Up {
	return self
	}

	var transform: CGAffineTransform = CGAffineTransformIdentity
	Convention: Byte array notation as it would appear in a hexeditor.

	= Layout=

	KDBX files, the keepass database files, are layout as follows:

	1) Bytes 0-3: Primary identifier, common across all kdbx versions:
	private static $sigByte1=[0x03,0xD9,0xA2,0x9A];

	2) Bytes 4-7: Secondary identifier. Byte 4 can be used to identify the file version (0x67 is latest, 0x66 is the KeePass 2 pre-release format and 0x55 is KeePass 1)