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How to call a stored procedure from Java and JPA
... argumentValues);
DatabaseRecord record = (DatabaseRecord) results.get(0);
String result = String.valueOf(record.get("o_output_1")); // Get output parameter
Using EclipseLink-2.5.0/JPA-2.1: Implementation-Independent (documented already in this thread)
This method is implementation independent (d...
Why does sizeof(x++) not increment x?
...efit to compile-time resolution of the sizeof() operator when working with strings. If you have a string that is initialized as a quoted string, instead of using strlen(), where the character array comprising the string has to be scanned for the null-terminator at run time, sizeof(quoted_string) is ...
Android: How can I pass parameters to AsyncTask's onPreExecute()?
...
/* Generic Async Task */
interface MyGenericMethod {
int execute(String param);
}
protected class testtask extends AsyncTask<MyGenericMethod, Void, Void>
{
public String mParam; // member variable to parameterize the function
@Override
protected...
JavaScript check if variable exists (is defined/initialized)
...initialized is better/correct?
(Assuming the variable could hold anything (string, int, object, function, etc.))
28 Answers...
What's the difference between UTF-8 and UTF-8 without BOM?
...re is no official difference between UTF-8 and BOM-ed UTF-8
A BOM-ed UTF-8 string will start with the three following bytes. EF BB BF
Those bytes, if present, must be ignored when extracting the string from the file/stream.
But, as additional information to this, the BOM for UTF-8 could be a good ...
form serialize javascript (no framework)
...cent browsers), use this:
new URLSearchParams(new FormData(formElement)).toString()
Everywhere except IE
For browsers that support URLSearchParams but not the FormData(formElement) constructor, use this FormData polyfill and this code (works everywhere except IE):
new URLSearchParams(Array.from(new...
Why doesn't Java allow generic subclasses of Throwable?
...eException<Integer> e) {
// ignore that
} catch (SomeException<String> e) {
crashAndBurn()
}
Both SomeException<Integer> and SomeException<String> are erased to the same type, there is no way for the JVM to distinguish the exception instances, and therefore no way to ...
How to know what the 'errno' means?
...
You can use strerror() to get a human-readable string for the error number. This is the same string printed by perror() but it's useful if you're formatting the error message for something other than standard error output.
For example:
#include <errno.h>
#include ...
How to take all but the last element in a sequence using LINQ?
...st = false;
}
} while (hasRemainingItems);
}
static void Main(string[] args) {
var Seq = Enumerable.Range(1, 10);
Console.WriteLine(string.Join(", ", Seq.Select(x => x.ToString()).ToArray()));
Console.WriteLine(string.Join(", ", Seq.TakeAllButLast().Select(x => x.ToSt...
Method has the same erasure as another method in type
... uses type erasure. The bit in the angle brackets (<Integer> and <String>) gets removed, so you'd end up with two methods that have an identical signature (the add(Set) you see in the error). That's not allowed because the runtime wouldn't know which to use for each case.
If Java ever g...