kobeumut

extension CheckData on List? {
  T getItem<T>(int position,{dynamic errorReturnValue = "."}) => (this?.length ?? 0) > position ? this![position] : errorReturnValue;
}

//USAGE
// var list = [1,2,5,7];
// print("${list[4]}");  this shows index out of range error so now you can use like below
// list.getItem(4) it's return dot because of the default errorReturnValue is .
//
// if you want specify the error value you can enter errorReturnValue parameter

kobeumut

public class ApplicationExecutors {

    private final Executor background;
    private final Executor mainThread;

    public Executor getBackground() {
        return background;
    }

    public Executor getMainThread() {

kobeumut

fun ViewGroup.findViewWithTagRecursively(tag: Any): List<View>? {
    val allViews: MutableList<View> = ArrayList<View>()
    val childCount: Int = this.childCount
    for (i in 0 until childCount) {
        val childView: View = this.getChildAt(i)
        if (childView is ViewGroup) {
            childView.findViewWithTagRecursively(tag)?.let { allViews.addAll(it) }
        } else {
            val tagView: Any? = childView.tag
            if (tagView != null && tagView == tag) allViews.add(childView)

kobeumut

import java.text.SimpleDateFormat
import java.util.*

/**
 * Pattern: yyyy-MM-dd HH:mm:ss
 */
fun Date.formatToServerDateTimeDefaults(): String{
    val sdf= SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault())
    return sdf.format(this)
}

kobeumut

Call<ResponseBody>.saveFile(fileNameWithExt: String, action: (file: File?) -> Unit) {
        GlobalScope.launch {
            try {
                cacheDir.listFiles { _, name -> name.contains("${fileType}.pdf") }?.lastOrNull {
                    action(it)
                    true
                }?:
                withContext(Dispatchers.IO) {
                    val response = this@saveFile.execute()
                    val buffer = response.body()?.byteStream()

kobeumut

    fun alternateMerge(arr1: IntArray, arr2: IntArray,
                       n1: Int, n2: Int, arr3: IntArray) {
        var i = 0
        var j = 0
        var k = 0
        // Traverse both array
        while (i < n1 && j < n2) {
            arr3[k++] = arr1[i++]
            arr3[k++] = arr2[j++]
        }

kobeumut

before_script:
  - apt-get update -qq
  - apt-get install -qq git
  ##
  ## Install ssh-agent if not already installed, it is required by Docker.
  ## (change apt-get to yum if you use an RPM-based image)
  ##
  - 'which ssh-agent || ( apt-get update -y && apt-get install openssh-client git -y )'

  ##

kobeumut

[
{ "code":"AF", "country" : "Afghanistan", "bound": [60.53, 29.32, 75.16, 38.49] },
{ "code":"AO", "country" : "Angola", "bound": [11.64, -17.93, 24.08, -4.44] },
{ "code":"AL", "country" : "Albania", "bound": [19.3, 39.62, 21.02, 42.69] },
{ "code":"AE", "country" : "United Arab Emirates", "bound": [51.58, 22.5, 56.4, 26.06] },
{ "code":"AR", "country" : "Argentina", "bound": [-73.42, -55.25, -53.63, -21.83] },
{ "code":"AM", "country" : "Armenia", "bound": [43.58, 38.74, 46.51, 41.25] },
{ "code":"AQ", "country" : "Antarctica", "bound": [-180.0, -90.0, 180.0, -63.27] },
{ "code":"TF", "country" : "French Southern Territories", "bound": [68.72, -49.78, 70.56, -48.63] },
{ "code":"AU", "country" : "Australia", "bound": [113.34, -43.63, 153.57, -10.67] },

kobeumut

Setup new Server

This setup guide was created with the following components:

• DigitalOcean Droplet (Ubuntu 16.04.4 x64)
• Postgresql 9.5
• Nginx + Passenger
• Rails 5.2
• Ruby 2.4.1

kobeumut

fun <T> LiveData<T>.observeOnce(lifecycleOwner: LifecycleOwner, observer: Observer<T>) {
    observe(lifecycleOwner, object : Observer<T> {
        override fun onChanged(t: T?) {
            observer.onChanged(t)
            removeObserver(this)
        }
    })
}
//Using
liveData.observeOnce(this, Observer<Password> {