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Android Shared preferences for creating one time activity (example) [closed]
...t SharedPreferences data
// If value for key not exist then return second param value - In this case null
boolean userFirstLogin= pref.getBoolean("key_name1", true); // getting boolean
int pageNumber=pref.getInt("key_name2", 0); // getting Integer
float amount=pref.getFloat("key_name3...
Why is my Spring @Autowired field null?
...emo {
@Autowired
private MyService myService;
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("test");
ApplicationContext ctx=new ClassPathXmlApplicationContext("spring....
Undefined reference to static class member
...constant which you can't take the address of, and vector takes a reference param.
– Evan Teran
Nov 7 '08 at 18:08
10
...
Update Row if it Exists Else Insert Logic with Entity Framework
...c void AddOrUpdate<TEntity>(
this IDbSet<TEntity> set,
params TEntity[] entities
)
where TEntity : class
which by the doc:
Adds or updates entities by key when SaveChanges is called. Equivalent
to an "upsert" operation from database terminology. This method can be
usefu...
AngularJS - Value attribute on an input text box is ignored when there is a ng-model used?
...() on fields without a ngModel attributes.
Corrected the assign() function param order.
app.directive('input', function ($parse) {
return {
restrict: 'E',
require: '?ngModel',
link: function (scope, element, attrs) {
if (attrs.ngModel && attrs.value) {
$parse(at...
When do you need to explicitly call a superclass constructor?
...structor to call if:
You want to call a superclass constructor which has parameters
You want to chain to another constructor in the same class instead of the superclass constructor
You claim that:
At the same time I've also seen instances on here where someone's problem was not explicitly ca...
What is the purpose of a self executing function in javascript?
...works.
When you wrap a function definition in parentheses, and include a parameter list (another set or parentheses!) it acts as a function call.
So lets look at our code again, with some self-executing syntax:
(function main() {
var userName = "Sean";
console.log(name());
function n...
How can I pretty-print JSON in a shell script?
...y='python -mjson.tool | pygmentize -l json so that I can just run: command params | pretty. Hope this helps. PS: Should anyone manages to extend this to a) remove the curl-output I'm seeing every time and/or b) NOT sort the json keys; please do let me know, I will be highly thankful.
...
Why use a ReentrantLock if one can use synchronized(this)?
...d scheduling.
The constructor for this class accepts an optional fairness parameter. When set true, under contention, locks favor granting access to the longest-waiting thread. Otherwise this lock does not guarantee any particular access order. Programs using fair locks accessed by many threads may...
How do you switch pages in Xamarin.Forms?
...t - to remove transitions when changing the page, add false as the second parameter: await Navigation.PushAsync(new SecondPage(),false);
– Damian Green
Nov 3 '15 at 12:21
...