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How to reference constants in EL?
...n EL 2.2 and older. There are several alternatives:
Put them in a Map<String, Object> which you put in the application scope. In EL, map values are accessible the usual Javabean way by ${map.key} or ${map['key.with.dots']}.
Use <un:useConstants> of the Unstandard taglib (maven2 repo he...
Best practice to return errors in ASP.NET Web API
...
public class NotFoundWithMessageResult : IHttpActionResult
{
private string message;
public NotFoundWithMessageResult(string message)
{
this.message = message;
}
public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
{
var...
How do you specify the date format used when JAXB marshals xsd:dateTime?
...ation.adapters.XmlAdapter;
public class DateAdapter extends XmlAdapter<String, Date> {
private final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
@Override
public String marshal(Date v) throws Exception {
synchronized (dateFormat) {
...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
... dirty checking. Suppose the following
public class Person {
private String name;
private Integer age;
}
public class PersonServiceImpl implements PersonService {
public void changeAge(Integer personId, Integer newAge) {
Person person = em.getReference(Person.class, personI...
C++11 emplace_back on vector?
...
You need to explicitly define a ctor for the class:
#include <string>
#include <vector>
using namespace std;
struct T
{
int a;
double b;
string c;
T(int a, double b, string &&c)
: a(a)
, b(b)
, c(std::move(c))
{}
};
vect...
Python convert tuple to string
...method_descriptor:
join(...)
S.join(iterable) -> str
Return a string which is the concatenation of the strings in the
iterable. The separator between elements is S.
>>>
share
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...
ISO time (ISO 8601) in Python
... like to take its creation time, and convert it to an ISO time (ISO 8601) string while preserving the fact that it was created in the Eastern Time Zone (ET) .
...
What's the difference between ngModel.$modelValue and ngModel.$viewValue
...fference. It is this:
As you already noted above:
$viewValue: Actual string (or Object) value in the view.
$modelValue: The value in the model, that the control is bound to.
I'm going to assume that your ngModel is referring to an <input /> element...? So your <input> has a st...
typeof !== “undefined” vs. != null
...defined' and typeof somevar === 'undefined', because typeof always returns string. For null it will return 'object'. Or could be that I am wrong?
– TomTom
Feb 1 '13 at 14:55
2
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How to read integer value from the standard input in Java
...
If he enters a string or 'Enter' it will throw a NumberFormatException. So it's better to control the string before parsing it to Integer
– Vasile Surdu
Jun 28 '14 at 8:57
...