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Oracle: If Table Exists
...ption: this avoids the overhead of checking if the table exists twice; and doesn't suffer from the problem that if the DROP fails for some other reason (that might be important) the exception is still raised to the caller:
BEGIN
EXECUTE IMMEDIATE 'DROP TABLE ' || table_name;
EXCEPTION
WHEN OT...
jquery live hover
...
It still does not work for me though. I tried doing this: Where am i going wrong? > $('table tr').live('hover', function() { $(this).find('.deletebutton').toggle(); });
– Shripad Krishna
Ju...
In Vim/Vi, how do you move the cursor to the end of the previous word?
... combination of two commands, so you can't use it like: d be. Whereas d ge does work
– Daniel Thompson
Mar 15 '18 at 8:43
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How do I determine if a port is open on a Windows server? [closed]
...ning on that port
timeout means that a firewall is blocking access
On Windows 7 or Windows Vista the default option 'telnet' is not recognized as an internal or external command, operable program or batch file. To solve this, just enable it: Click *Start** → Control Panel → Programs → Turn...
What is “callback hell” and how and why does RX solve it?
...h a simple example that explains what is a "callback hell" for someone who does not know JavaScript and node.js ?
8 Answers...
Why is the use of tuples in C++ not more common?
Why does nobody seem to use tuples in C++, either the Boost Tuple Library or the standard library for TR1? I have read a lot of C++ code, and very rarely do I see the use of tuples, but I often see lots of places where tuples would solve many problems (usually returning multiple values from functi...
Variable declared in for-loop is local variable?
...h is invalid according to the above.
The reason why you're not allowed to do int A = i; is because int i is only scoped for use within the for loop. Thus it is no longer accessible outside of the for loop.
As you can see both of these issues are a result of scoping; the first issue (int i = 4;) w...
Why shouldn't I use “Hungarian Notation”?
...ng type information to identifiers is not only useless but it may actually do harm. First, readability is less fluent. Second, in languages that support polymorphism or duck-typing the wrong information is passed.
– wilhelmtell
Dec 29 '08 at 3:35
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Can we pass parameters to a view in SQL?
... If you have a set of users who have access to your database, and you don't want them running "select * from [view]" and impacting performance, you could grant access to certain functions, which would FORCE them to provide filter parameters that, for example, leverage a certain set of index(es)...
Difference between onCreateView and onViewCreated in Fragment
...eated is a make sure that view is fully created.
onViewCreated android Documentation
Called immediately after onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle) has returned, but before any saved state has been restored in to the view. This gives subclasses a ...