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How can I determine if a JavaScript variable is defined in a page? [duplicate]
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you are checking if x = a string, not if x is undefined.
– FlySwat
Sep 26 '08 at 23:02
1
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How do you find all subclasses of a given class in Java?
...basic code:
public final class ObjectListDoclet {
public static final String TOP_CLASS_NAME = "com.example.MyClass";
/** Doclet entry point. */
public static boolean start(RootDoc root) throws Exception {
try {
ClassDoc topClassDoc = root.classNamed(TOP_CLA...
What is difference between Collection.stream().forEach() and Collection.forEach()?
...at with .stream() , I can use chain operations like .filter() or use parallel stream. But what is difference between them if I need to execute small operations (for example, printing the elements of the list)?
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Generate a random date between two other dates
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Convert both strings to timestamps (in your chosen resolution, e.g. milliseconds, seconds, hours, days, whatever), subtract the earlier from the later, multiply your random number (assuming it is distributed in the range [0, 1]) with that...
JAX-RS — How to return JSON and HTTP status code together?
...th("retrieve/{uuid}")
public Response retrieveSomething(@PathParam("uuid") String uuid) {
if(uuid == null || uuid.trim().length() == 0) {
return Response.serverError().entity("UUID cannot be blank").build();
}
Entity entity = service.getById(uuid);
if(entity == null) {
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Find nearest value in numpy array
...f you can't assume that the array is already sorted. It’s overkill for small arrays, but once they get large this is much faster.
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Change default primary key in Eloquent
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If you are wanting to use a composite key (a string)
You need to make sure you set public $incrementing = false otherwise laravel will cast the field to an Integer, giving 0
class User extends Model {
protected $primaryKey = 'my_string_key';
public $increment...
Why doesn't Java allow overriding of static methods?
... System.out.print(" ");
printValue();
}
public static void main(String[] args) {
System.out.println("Object: static type Base; runtime type Child:");
Base base = new Child();
base.printValue();
base.nonStatPrintValue();
System.out.println("Object: static type Child; ru...
jQuery ui dialog change title after load-callback
...m an UI Dialog after i have submitted a form in this UI Dialog. So in the callback-function after load i should suggest, but i've tried and googled without result.
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Copy tables from one database to another in SQL Server
...the 2 databases are on totally different servers with different connection strings? If not how do you handle that?
– Alexander Ryan Baggett
Aug 25 '17 at 20:07
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