brownsoo

// 이메일 정규표현식 
public static boolean testEmailFormat(String text) {
    if (TextUtils.isEmpty(text)) return false;
    Pattern pattern = Pattern.compile("^(([^<>()\\[\\]\\\\.,;:\\s@\"]" +
            "+(\\.[^<>()\\[\\]\\\\.,;:\\s@\"]+)*)|(.+))" +
            "@" +
            "((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}])" +
            "|(([a-zA-Z-0-9]+\\.)+[a-zA-Z]{2,}))$");
    return pattern.matcher(text).matches();
}

brownsoo

<!-- drawable-v21 -->
<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
        android:color="?android:attr/colorControlHighlight">
    <item
        android:id="@android:id/mask">
        <shape android:shape="rectangle">
            <solid android:color="#000000"/>
            <corners android:radius="5dp"/>
        </shape>

brownsoo

## Android architecture components: Lifecycle
# LifecycleObserver's empty constructor is considered to be unused by proguard
-keepclassmembers class * implements android.arch.lifecycle.LifecycleObserver {
    <init>(...);
}
# ViewModel's empty constructor is considered to be unused by proguard
-keepclassmembers class * extends android.arch.lifecycle.ViewModel {
    <init>(...);
}
# keep Lifecycle State and Event enums values

brownsoo

private void updateVisibleTaskIndex() {
    RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
      if (layoutManager instanceof LinearLayoutManager) {
          LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
          int first = linearLayoutManager.findFirstVisibleItemPosition();
          int last = linearLayoutManager.findLastVisibleItemPosition();
          RecyclerView.ViewHolder viewHolder;
          for (int i = first; i <= last; i++) {
              viewHolder = recyclerView.findViewHolderForAdapterPosition(i);
              if (viewHolder instanceof TaskViewHolder) { //TaskViewHolder is custom holder

brownsoo

// Promise like subscriber, works with Equatable types and Optionals of Equatable types
// ie:
// let observer = document.mainStore
//     .select { (state) -> UIState in state.ui }
//     .then { _ in called += 1 }
// or
// let observer = document.mainStore
//     .select { (state) -> String? in state.ui.selection }
//     .then { _ in called += 1 }
//

brownsoo

// find email, password (Token)
grep -A2 'trunk.cocoapods.org' ~/.netrc

// replace email and name 
curl -v -H "Authorization: Token <MY CURRENT TOKEN>" -H "Content-Type: application/json" -X POST -d '{"email":"<MY EMAIL>","name":"<MY NEW NAME>","description":"<My DESCRIPTION>"}' https://trunk.cocoapods.org/api/v1/sessions

brownsoo

// in UIViewController

func setupHideKeypadWhenTappedAround() {
    let tap = UITapGestureRecognizer(target: self, action: #selector(handleTap))
    tap.cancelsTouchesInView = false
    view.addGestureRecognizer(tap)
    // responsive keyboard frame
    NotificationCenter.default.addObserver(self, selector: #selector(handleKeyboardWillChange),
    name: NSNotification.Name.UIKeyboardWillChangeFrame, object: nil)
}

brownsoo

public extension UIImage {
    func tint(_ color: UIColor) -> UIImage {
        let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
        let renderer = UIGraphicsImageRenderer(size: rect.size)
        let result = renderer.image { c in
            color.setFill()
            c.fill(rect)
            self.draw(in: rect, blendMode: .destinationIn, alpha: 1)
        }
        return result

brownsoo

public extension UIImage {
  func round(_ radius: CGFloat) -> UIImage {
        let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
        let renderer = UIGraphicsImageRenderer(size: rect.size)
        let result = renderer.image { c in
            let rounded = UIBezierPath(roundedRect: rect, cornerRadius: radius)
            rounded.addClip()
            if let cgImage = self.cgImage {
                UIImage(cgImage: cgImage, scale: self.scale, orientation: self.imageOrientation).draw(in: rect)
            }

brownsoo

import Foundation

extension DateFormatter {
    static let iso8601Full: DateFormatter = {
        let formatter = DateFormatter()
        formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ"
        formatter.calendar = Calendar(identifier: .iso8601)
        formatter.timeZone = TimeZone(secondsFromGMT: 0)
        formatter.locale = Locale(identifier: "en_US_POSIX")
        return formatter