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Is there a performance impact when calling ToList()?
...u should not use ToList() unless work you are doing cannot be done without converting collection to List. For example if you just want to iterate through the collection you don't need to perform ToList
If you are performing queries against a data source for example a Database using LINQ to SQL then...
What is the difference between NULL, '\0' and 0?
...ion of this type, cast to type void * is a null pointer constant, which if converted to a pointer becomes a null pointer. It is guaranteed by the standard to compare unequal to any pointer to any object or function.
NULL is a macro, defined in as a null pointer constant.
\0 is a construction used...
What does functools.wraps do?
...gt;>> basetwo = partial(int, base=2)
>>> basetwo.__doc__ = 'Convert base 2 string to an int.'
>>> basetwo('10010')
18
Which brings me to the conclusion that, @wraps gives a call to partial() and it passes your wrapper function as a parameter to it. The partial() in the end r...
What is the most pythonic way to check if an object is a number?
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@NicolasAbril, convert 0*x==0 to a bool inside isNumber.
– shrewmouse
Aug 16 '19 at 19:05
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How to prevent buttons from submitting forms
...be used PHP sessions and neither cookies are allowed!
So any link must be converted to such form submit, so the login data is not lost.
When no login is yet done, it must also work. So no validation must be performed on links.
But I want to present a message to the user if the user has not entered ...
Does Java have something like C#'s ref and out keywords?
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Like many others, I needed to convert a C# project to Java. I did not find a complete solution on the web regarding out and ref modifiers. But, I was able to take the information I found, and expand upon it to create my own classes to fulfill the requirem...
Is there a difference between foreach and map?
...eturns another list of the same size with the transformed members (such as converting a list of strings to uppercase)
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Django - how to create a file and save it to a model's FileField?
...ile) works perfectly with the file string returned by django-wkhtmltopdf's convert_to_pdf command. Thank you!!
– Nostalg.io
Sep 1 '16 at 4:53
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Custom method names in ASP.NET Web API
I'm converting from the WCF Web API to the new ASP.NET MVC 4 Web API. I have a UsersController, and I want to have a method named Authenticate. I see examples of how to do GetAll, GetOne, Post, and Delete, however what if I want to add extra methods into these services? For instance, my UsersService...
Why not infer template parameter from constructor?
...iable<Variable<int>> ?
The key question is, does the compiler select the type-inferred constructor here or the copy constructor?
Trying the code out, we can see that the copy constructor is selected. To expand on the example:
Variable var(num); // infering ctor
Variable var2(va...