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Help with C# generics error - “The type 'T' must be a non-nullable value type”
... if CoalesceMax used several generics, and violated the constraint on only one of them - it's more useful to know which generic had its constraint broken than to just know that one or more constraints in CoalesceMax were broken).
The solution is to make your T and their T compatible by introducing ...
How to install both Python 2.x and Python 3.x in Windows
...se which Python to run pip under as above.
– Mark Tolonen
Apr 2 '17 at 5:16
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Disable messages upon loading a package
...ssages() suppresses any and all messages (but not cat() as I recall). But one is not supposed to use that in startup text.
– Dirk Eddelbuettel
Dec 31 '11 at 0:36
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Is there a reason for C#'s reuse of the variable in a foreach?
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The compiler declares the variable in a way that makes it highly prone to an error that is often difficult to find and debug, while producing no perceivable benefits.
Your criticism is entirely justified.
I discuss this problem in detail here:
Closing over the loop variable considered ha...
What is “function*” in JavaScript?
... using "yield return" see 1 and see 2
Essentially this returns each value one by one to whatever is iterating this function, which is why their use case shows it in a foreach style loop.
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What's the point of Spring MVC's DelegatingFilterProxy?
...ilterProxy handles the complexity of finding the real implementation - the one you wrote and configured in Spring - and routing requests to it. So at runtime, it's as if you had listed your filter in the web.xml, but you get the benefit of being able to wire it like any other Spring bean.
If you ta...
@Transactional(propagation=Propagation.REQUIRED)
if some one can explain what this annotation do and when exactly we use it :
4 Answers
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How do I enumerate the properties of a JavaScript object? [duplicate]
... you will get properties that are inherited - however, I don't know why anyone familiar with object-oriented programming would expect anything less! Typically, someone that brings this up has been subjected to Douglas Crockford's warnings about this, which still confuse me a bit. Again, inheritance ...
How to allow http content within an iframe on a https site
...lustrate the idea -- it doesn't sanitize the URL, nor would it prevent someone else using the redirect.php for their own purposes. Consider these things in the context of your own site.
The upside, though, is it's more flexible. For example, you could add some validation of the curl'd $data to ma...
How to add ID property to Html.BeginForm() in asp.net mvc?
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Where does one find the API or documentation for all of the html helpers? For example where do find out what the parameters stand for?
– Zapnologica
Jul 14 '13 at 9:59
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