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How do I (or can I) SELECT DISTINCT on multiple columns?
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This query, while correct and being accepted for year now, is extremely inefficient and unnecessarily so. Don't use this. I provided an alternative and some explanation in another answer.
– Erwin Brandstetter
Sep 30 '12 at 20:45
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Why and How to avoid Event Handler memory leaks?
...he main window. After doing something, the user closes the child window.
Now, according to the flow chart I provided if you ask a question "Does the child window (event subscriber) supposed to be dead before the event publisher (main window)? The answer should be YES. Right? So, detach the event h...
How do I remove code duplication between similar const and non-const member functions?
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@VioletGiraffe we know that the object wasn't originally created const, as it is a non-const member of a non const object, which we know because we are in a non-const method of said object. The compiler doesn't make this inference, it follows a...
What is Virtual DOM?
... will be created which actually does not do any changes in the actual DOM. Now with this virtual DOM, you will be checking the difference between this and your current DOM. And only the part which is different (in this case the new <div>) will be added instead of re-rendering the whole DOM.
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What exactly is Hot Module Replacement in Webpack?
...bubble up" occurs. If it bubbles up to an entry point, the process fails.
Now all invalid modules are disposed (dispose handler) and unloaded. Then the current hash is updated and all "accept" handlers are called. The runtime switches back to the idle state and everything continues as normal.
Wh...
When is a language considered a scripting language? [closed]
...finition of what "functional programming" is, is pretty clear, but nobody knows what a "functional programming language" is.
Functional programming or object-oriented programming are programming styles; you can write in a functional style or an object-oriented style in pretty much any language. For...
Tying in to Django Admin's Model History
... = ADDITION
)
where object is the object that was changed of course.
Now I see Daniel's answer and agree with him, it is pretty limited.
In my opinion a stronger approach is to use the code from Marty Alchin in his book Pro Django (see Keeping Historical Records starting at page 263). There i...
When should I use cross apply over inner join?
...ct tbl.value + 1 as someFormula) as crossTbl and voilà! Your new field is now ready for use practically like it had always been there in your source data.
Values introduced through CROSS APPLY can...
be used to create one or multiple calculated fields without adding performance, complexity or re...
SAML: Why is the certificate within the Signature?
... key in the message, and the response hasn't been tampered with.
I don't know what tech you're working with, but in .Net you can check it like this:
// load a new XML document
var assertion = new XmlDocument { PreserveWhitespace = true };
assertion.LoadXml("The SAML XML that you were sent");
// u...
What is in your .vimrc? [closed]
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As far as I know, the :set paste option doesn't have any effect on the p command, it only affects text typed (or pasted through a terminal) in insert mode. So no, it's a different feature.
– Greg Hewgill
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