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/**
 Protocolo responsável por fazer o efeito de parallax nas imagens que, principalmente, são usadas como background.
 
 É necessário chamar a função `setupParallaxInitialValues` no `awakeFromNib` da `UITableViewCell` para configurar os valores iniciais das variáveis.
 
 Além disso, para total funcionamento do efeito, é necessário implementar algumas chamadas na `UIViewController` ou `UITableViewController` que a `tableView` está instanciada.
 
 Chamar a função `setParallaxCellImageOffsetWithTableView` no `willDisplayCell` da `UITableViewDelegate` e para todas as células visíveis no método `scrollViewDidScroll`.
 
 Implementação:

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//
//  Created by Chris Wagner
//  https://gist.github.com/cwagdev/e66d4806c1f63fe9387a
//
//  Modified by Thiago Holanda (August/2016)
// 
//  These modifications was made to support the latest version of Swift
//  before the major version (3.0) is released. This code will compile
//  without any problem on Swift 2.2.
//  

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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.

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# Note: You MUST have curl 7.47+ with http/2 support compiled in

curl -v \
-d '{"aps":{"alert":"<message>","badge":42}}' \
-H "apns-topic: <bundle id>" \
-H "apns-priority: 10" \
--http2 \
--cert <certificate file> \
https://api.development.push.apple.com/3/device/<device token>

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# create an account, create an app
# @see https://apps.twitter.com/

# retrieve the access tokens
# @see https://dev.twitter.com/oauth/reference/post/oauth2/token

# create the file ~/twitter_api
nano ~/twitter_api
Authorization: OAuth oauth_consumer_key="XXXXXX", oauth_nonce="11111111", oauth_signature="XXXXXX", oauth_signature_method="HMAC-SHA1", oauth_timestamp="1450728725", oauth_token="99999-XXXXXX", oauth_version="1.0"

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5 entertaining things you can find with the GitHub Search API

Let's have some command-line fun with curl, [jq][1], and the [new GitHub Search API][2].

Today we're looking for:

• The hottest repositories created in the last week.
• The oldest user accounts with zero followers. (So sad.)
• Issue trends by language.
• Clojure projects defying convention.

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Byobu Commands
==============

        byobu                              Screen manager


Level 0 Commands (Quick Start)
------------------------------

        <F2>                               Create a new window

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import XCTest

class NotificationTestCase: XCTestCase {

    func testTriggerNotification() {
        expectation(forNotification: .fooBar,
                    object: nil,
                    handler: nil)

        let notificationCenter = NotificationCenter.default

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extension Sequence {
    func groupSort(ascending: Bool = true, byDate dateKey: (Iterator.Element) -> Date) -> [[Iterator.Element]] {
        var categories: [[Iterator.Element]] = []
        for element in self {
            let key = dateKey(element)
            guard let dayIndex = categories.index(where: { $0.contains(where: { Calendar.current.isDate(dateKey($0), inSameDayAs: key) }) }) else {
                guard let nextIndex = categories.index(where: { $0.contains(where: { dateKey($0).compare(key) == (ascending ? .orderedDescending : .orderedAscending) }) }) else {
                    categories.append([element])
                    continue
                }