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fun Context?.isOnline(failBlock : () -> Unit  = { globalIntenetFailBock() }, successBlock : () -> Unit ) {
    this?.apply {
            ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            val b : Boolean = false
            if (cm == null) b = false

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                NetworkCapabilities cap = cm.getNetworkCapabilities(cm.getActiveNetwork())
                if (cap == null) b = false
                b = cap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)

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private val GOOGLE_REQUEST_CODE: Int = 123

val uriapp = Uri.Builder()
        .scheme("upi")
        .authority("pay")
        .appendQueryParameter("pa", "merchant@bank")  //VPA Name here
        .appendQueryParameter("pn", "Merchant Name")  //merchant name here
        .appendQueryParameter("mc", "1234")           //merchant code here
        .appendQueryParameter("tr", "123456789")      //transaction reference id here
        .appendQueryParameter("tn", "For shopping")   //transaction note here

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val constraintSet = ConstraintSet()
constraintSet.clone(root_view_of_constaint_layout)
constraintSet.setMargin(view_which_we_apply_margin_on, top/bottom/start/end, int_dp)
constraintSet.applyTo(root_view_of_constaint_layout)

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Three Sum
Have the function ThreeSum(arr) take the array of integers stored in arr, and determine if any three distinct numbers 
(excluding the first element) in the array can sum up to the first element in the array. 
For example: if arr is [8, 2, 1, 4, 10, 5, -1, -1] then there are actually three sets of triplets that sum to 
the number 8: [2, 1, 5], [4, 5, -1] and [10, -1, -1]. 
Your program should return the string true if 3 distinct elements sum to the first element, 
otherwise your program should return the string false. The input array will always contain at least 4 elements.

Examples
Input: arrayOf(10, 2, 3, 1, 5, 3, 1, 4, -4, -3, -2)

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@Preview
@Composable
fun ForSurface() {
    Surface(
        shape = MaterialTheme.shapes.medium,
        elevation = 2.dp,
        border = BorderStroke(1.dp, colorResource(id = R.color.black)), //apply border
        color = colorResource(id = R.color.teal_200), //apply foreground color
        contentColor = colorResource(id = R.color.white), //apply color to all child view
        modifier = Modifier

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@Preview
@Composable
private fun columnRecyclerView(names: List<String> = List(1000) { "$it" }) {
    val context = LocalContext.current
    Column(
        modifier = Modifier.fillMaxSize(), verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        LazyColumn(modifier = Modifier.padding(vertical = 4.dp)) {
            items(names) { name ->

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FloatingActionButton(onClick = {  }, backgroundColor = MaterialTheme.colors.secondary) { 

                    Icon( 

                        painter = painterResource(id = R.drawable.ic_baseline_arrow_upward_24), 

                        contentDescription = "Go Up" 

                    ) 

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fun Modifier.baseLineToTop(firstBaselineToTop: Dp): Modifier {

    return this.then(
        layout { measurable, constraints ->
            val placeable = measurable.measure(constraints = constraints)

            // Check the composable has a first baseline
            check(placeable[FirstBaseline] != AlignmentLine.Unspecified)
            val firstBaseline = placeable[FirstBaseline]

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@Preview(showSystemUi = true)
@Composable
fun ConstraintLayoutContentPreview() {
    ComposeTheme {
        ConstraintLayoutContent()
    }
}
//(1)----------------------------------Basic------------------------------------
@Composable
fun ConstraintLayoutContent() {

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values/themes.xml
<resources>
    <style name="Theme.ComposeTheming" parent="Theme.Material.DayNight.NoActionBar">
        <item name="android:statusBarColor">@color/status_bar</item>
    </style>

    <style name="Theme.Material.DayNight.NoActionBar" parent="@android:style/Theme.Material.Light.NoActionBar" />

</resources>
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