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SET versus SELECT when assigning variables?
...ed then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from its previous value)
As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does ...
Will #if RELEASE work like #if DEBUG does in C#?
In all the examples I've seen of the #if compiler directive, they use "DEBUG". Can I use "RELEASE" in the same way to exclude code that I don't want to run when compiled in debug mode? The code I want to surround with this block sends out a bunch of emails, and I don't want to accidentally send tho...
What does do?
...15 Update
This answer was posted several years ago and now the question really should be should you even consider using the X-UA-Compatible tag on your site? with the changes Microsoft has made to its browsers (more on those below).
Depending upon what Microsoft browsers you support you may not ne...
How to find path of active app.config file?
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Thank you. I had a project upgraded from VS2008 -> VS2013 that refused to read the app.config file. Then I learned via AppDomain.CurrentDomain.SetupInformation.ConfigurationFile that it was searching for XXX.vshost.exe.config which was not being generated . So I ...
JSON and XML comparison [closed]
...ne, a little background:
edit: I should mention that this comparison is really from the perspective of using them in a browser with JavaScript. It's not the way either data format has to be used, and there are plenty of good parsers which will change the details to make what I'm saying not quite va...
What is a “context bound” in Scala?
...t manifests as "T has a Manifest". The example you linked to about Ordered vs Ordering illustrates the difference. A method
def example[T <% Ordered[T]](param: T)
says that the parameter can be seen as an Ordered. Compare with
def example[T : Ordering](param: T)
which says that the paramete...
What is fastest children() or find() in jQuery?
... depends on whether you only want to consider the immediate descendants or all nodes below this one in the DOM, i.e., choose the appropriate method based on the results you desire, not the speed of the method. If performance is truly an issue, then experiment to find the best solution and use that (...
Markdown to create pages and table of contents?
...ample<a name="third-example" /> is the only way I could get it to swallow spaces so far. Surely the 3rd tag would be interpreted as - #Third - followed by a space - then the word Example - in your snippet above? Hyphens do not work at all. Thanks
– twobob
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How to remove “disabled” attribute using jQuery?
...ld also know abut the dirty checkedness flag, which completely breaks attr vs prop for checkboxes: w3.org/TR/html5/forms.html#concept-input-checked-dirty except for internal jQuery workaround magic.
– Ciro Santilli 郝海东冠状病六四事件法轮功
Jul 6 ...
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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They are essentially equivalent to each other (in fact this is how some databases implement DISTINCT under the hood).
If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer wo...