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Difference between string object and string literal [duplicate]
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the link is now broken, I guess it was this article : javatechniques.com/blog/string-equality-and-interning
– Graham Griffiths
Sep 16 '13 at 10:33
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ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
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I know this is an old question, but still unanswered. It took me a day of research, but I found the simplest solution, at least in my case (Oracle 11.2 on Windows 2008 R2) and wanted to share.
The error, if looked at directly,...
How does JPA orphanRemoval=true differ from the ON DELETE CASCADE DML clause
...an removal is not affected by CascadeType. It's a complementary mechanism. Now, you are mistaking removal with persisting. Orphan removal is about deleting unreferenced associations while persisting is about saving new entities. You need to follow the links provided in the answer to get a better und...
How do you determine the ideal buffer size when using FileInputStream?
...k reads - but those reads will always use a full block - no wasted reads.
Now, this is offset quite a bit in a typical streaming scenario because the block that is read from disk is going to still be in memory when you hit the next read (we are doing sequential reads here, after all) - so you wind ...
Laravel orderBy on a relationship
...w column in table appointments to store datetime from table schedules. And now I only need to order by appointments.datetime I know it's not best method, but it solve the problem. XD
– Fendi Setiawan
Jan 28 at 10:37
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MySQL - Rows to Columns
... 2 | 9 | NULL | 40 |
+--------+------+------+------+
(Note that we now have one row per y-value.) Okay, we're almost there! We just need to get rid of those ugly NULLs.
Step 4: prettify. We're just going to replace any null values with zeroes so the result set is nicer to look at:
creat...
Split array into chunks
...onsole.log(
[1, 2, 3, 4, 5, 6, 7].chunk(3)
)
My preferred way nowadays is the above, or one of the following:
Array.range = function(n) {
// Array.range(5) --> [0,1,2,3,4]
return Array.apply(null,Array(n)).map((x,i) => i)
};
Object.defineProperty(Array.prototype, 'chunk', {
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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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@Svish yes, now I think of it again, it is a null object, so you're right, it won't work. It wouldn't in Java neither: null pointer exception. Never mind. Tnx for your reply! [edit: tested it in Java: NullPointerException. With the diffe...
Default visibility of class methods in PHP
... public function __construct() {
$this -> age = 9; // age is now public
$this -> privateFunction();
}
private function privateFunction() {
$this -> country = "USA"; // this is also public
}
}
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How to define a List bean in Spring?
...ecessary class (here called Configurator ) is injected with the stages.
Now I need the List of Stages in another class, named LoginBean . The Configurator doesn't offer access to his List of Stages.
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