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How to avoid the “divide by zero” error in SQL?
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In order to avoid a "Division by zero" error we have programmed it like this:
Select Case when divisor=0 then null
Else dividend / divisor
End ,,,
But here is a much nicer way of doing it:
Select dividend / NULLIF(divisor, 0) ...
Now ...
vertical align middle in
... the height of #abc div at 50px and text to align vertically in the middle of the div .
10 Answers
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Re-raise exception with a different type and message, preserving existing information
...being right, but for the use of "frobnicate" :)
– David M.
Feb 7 '17 at 19:31
5
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How to download .zip from GitHub for a particular commit sha?
...IP file, when unzipped I get a big ugly SHA1 directory name. Any way to avoid this?
– QED
Apr 24 at 21:42
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Invoke(Delegate)
...t queue, and this rule was enforced from .Net 2.0 onward via a thrown InvalidOperationException.
To understand what is actually going on behind the scenes, and what is meant by "GUI Thread", it's useful to understand what a Message Pump or Message Loop is.
This is actually already answered in the...
Calling a parent window function from an iframe
...;
// Use target origin instead of *
UPDATES:
Security note:
Always provide a specific targetOrigin, NOT *, if you know where the other window's document should be located. Failing to provide a specific target discloses the data you send to any interested malicious site (comment by ZalemCitizen)....
How to set warning level in CMake?
... predates the Modern CMake era. Every sane CMake user should refrain from fiddling with CMAKE_CXX_FLAGS directly and call the target_compile_options command instead. Check the mrts' answer which presents the recommended best practice.
You can do something similar to this:
if(MSVC)
# Force to alw...
How can I convert a DOM element to a jQuery element?
... take not only a string selector, but an existing jquery object, or any valid dom object as an argument to the main $() query function.
– Samuel Meacham
Nov 16 '09 at 20:54
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Get notified when UITableView has finished asking for data?
...ink that subclassing UITableView's reloadData is the best approach :
- (void)reloadData {
NSLog(@"BEGIN reloadData");
[super reloadData];
NSLog(@"END reloadData");
}
reloadData doesn't end before the table has finish reload its data. So, when the second NSLog is fired, the table v...
How to describe “object” arguments in jsdoc?
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any idea how to document a object member which is option ? I mean my user object should have username, and can have full name. so how do I specify that full name is optional
– Yash Kumar Verma
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