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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
... to the corresponding getters. A big word of caution is not to mix "Field" and "Property" access types within the entity class otherwise the behavior is undefined by the JSR-317 specifications.
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How to use HttpWebRequest (.NET) asynchronously?
...DoWork += (sender, args) => {
args.Result = new WebClient().DownloadString(settings.test_url);
};
worker.RunWorkerCompleted += (sender, e) => {
if (e.Error != null) {
connectivityLabel.Text = "Error: " + e.Error.Message;
} else {
connectivityLabel.Text = "Connectiv...
How to paste yanked text into the Vim command line
...u cannot live without them.
Registers are basically storage locations for strings. Vim has many registers that work in different ways:
0 (yank register: when you use y in normal mode, without specifying a register, yanked text goes there and also to the default register),
1 to 9 (shifting delete ...
How to encrypt/decrypt data in php?
...given_hash, $db_hash)) {
// user password verified
}
// constant time string compare
function isEqual($str1, $str2)
{
$n1 = strlen($str1);
if (strlen($str2) != $n1) {
return false;
}
for ($i = 0, $diff = 0; $i != $n1; ++$i) {
$diff |= ord($str1[$i]) ^ ord($str2[$...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...ce in some memory buffers
0xFE (unused parts of `std::string` or the user buffer
passed to `fread()`). 0xFD is used in VS 2005 (maybe
some prior versions, too), 0xFE is used in VS 2008
and later.
0xCC...
Learning Python from Ruby; Differences and Similarities
...rate using multiple indexes. For example, to find all the palindromes in a string (assuming you have a function p() that returns true for palindromes), all you need is a single list comprehension:
s = 'string-with-palindromes-like-abbalabba'
l = len(s)
[s[x:y] for x in range(l) for y in range(x,l+1...
How to scroll the window using JQuery $.scrollTo() function
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Note if you want to scroll the whole page and not individual element, use $('html, body') just like Tim has pointed here. Just $('body') will not work in all browsers.
– i--
Mar 28 '13 at 21:28
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Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
I have two user Objects and while I try to save the object using
36 Answers
36
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how to deal with google map inside of a hidden div (Updated picture)
i have a page and a google map is inside a hidden div at first. I then show the div after i click a link but only the top left of the map shows up.
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How to enter a multi-line command
...t is preceded by a valid statement:
return
5
will not work.
Finally, strings (in all varieties) may also extend beyond a single line:
'Foo
bar'
They include the line breaks within the string, then.
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