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How SID is different from Service name in Oracle tnsnames.ora
...me = alias to an INSTANCE (or many instances). The main purpose of this is if you are running a cluster, the client can say "connect me to SALES.acme.com", the DBA can on the fly change the number of instances which are available to SALES.acme.com requests, or even move SALES.acme.com to a completel...
round() doesn't seem to be rounding properly
...to blame here -- "5.665 -> 5.67" but "15.665 -> 15.66". Use decimals if you need exact precision.
– Jimmy
Jul 15 '15 at 22:42
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How to Convert Boolean to String
...in some cases it's not the best solution. The ?: notation is the most simplified code we can come up with in this situation.
– caiosm1005
Jul 14 '13 at 23:39
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MySQL Error 1093 - Can't specify target table for update in FROM clause
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Update: This answer covers the general error classification. For a more specific answer about how to best handle the OP's exact query, please see other answers to this question
In MySQL, you can't modify the same table which you use in the SELECT part.
This behaviour is doc...
Moq: Invalid setup on a non-overridable member: x => x.GetByTitle(“asdf”)
...ne something like this:
_mockArticleDao = new Mock<ArticleDAO>();
If you want to keep it as so, you need to mark the GetArticle method virtual:
public class ArticleDAO : GenericNHibernateDAO(IArticle, int>, IArticleDAO
{
public virtual IArticle GetByTitle(string title)
{
...
Android ViewPager - Show preview of page on left and right
...viewpager.setClipToPadding(false);
viewpager.setPadding(left,0,right,0);
If you need space between two pages in the viewpager then add
viewpager.setPageMargin(int);
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How to pick just one item from a generator?
... would like an item, use
next(g)
(or g.next() in Python 2.5 or below).
If the generator exits, it will raise StopIteration. You can either catch this exception if necessary, or use the default argument to next():
next(g, default_value)
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How do you add multi-line text to a UIButton?
...t to center it
button.titleLabel.textAlignment = NSTextAlignmentCenter; // if you want to
[button setTitle: @"Line1\nLine2" forState: UIControlStateNormal];
For iOS 5 and below use the following to allow multiple lines:
button.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
// you probably w...
How do you write multiline strings in Go?
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According to the language specification you can use a raw string literal, where the string is delimited by backticks instead of double quotes.
`line 1
line 2
line 3`
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Python Dictionary Comprehension
...n't use them to add keys to an existing dictionary. Also, you have to specify the keys and values, although of course you can specify a dummy value if you like.
>>> d = {n: n**2 for n in range(5)}
>>> print d
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
If you want to set them all to True:
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