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Why use the params keyword?
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The sum with a delegate, though, does increase the complexity of the compiled code, which could potentially be less performant. Not really relevant in this particular situation, as it would not result in any closures, but it's worth knowing what the compiler's actually doing to ma...
Casting a variable using a Type variable
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Here is an example of a cast and a convert:
using System;
public T CastObject<T>(object input) {
return (T) input;
}
public T ConvertObject<T>(object input) {
return (T) Convert.ChangeType(input, typeof(T));
...
How do I stop Entity Framework from trying to save/insert child objects?
...your database.
Option 2)
Set the child objects as detached from the context using the following code
context.Entry(yourObject).State = EntityState.Detached
Note that you can not detach a List/Collection. You will have to loop over your list and detach each item in your list like so
foreach (...
How to decorate a class?
...s created. You can, at that time, sub out the constructor for a new one.
Example:
def substitute_init(self, id, *args, **kwargs):
pass
class FooMeta(type):
def __new__(cls, name, bases, attrs):
attrs['__init__'] = substitute_init
return super(FooMeta, cls).__new__(cls, na...
LINQ OrderBy versus ThenBy
Can anyone explain what the difference is between:
4 Answers
4
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Android Camera : data intent returns null
...nt only when passing back a thumbnail in the returned Intent. If you pass EXTRA_OUTPUT with a URI to write to, it will return a null intent and the picture is in the URI that you passed in.
You can verify this by looking at the camera app's source code on GitHub:
https://github.com/android/platfo...
Can an enum class be converted to the underlying type?
...m class to its underlying integral type:
template<typename E>
constexpr auto to_integral(E e) -> typename std::underlying_type<E>::type
{
return static_cast<typename std::underlying_type<E>::type>(e);
}
then use it:
auto value = to_integral(my_fields::field);
auto...
Where in memory are my variables stored in C?
... -----> heap also stack (the teacher was trying to trick you)
pointers(ex: char *arr, int *arr) -------> heap data or stack, depending on the context. C lets you declare a global or a static pointer, in which case the pointer itself would end up in the data segment.
dynamically allocated space...
What's the difference between String(value) vs value.toString()
...me, and actually, the String constructor called as a function (your first example), will at the end, call the toString method of the object passed, for example:
var o = { toString: function () { return "foo"; } };
String(o); // "foo"
On the other hand, if an identifier refers to null or undefined...
How do you use the Immediate Window in Visual Studio?
...is an immensely useful tool for debugging applications. It can be used to execute code statements that are valid in the context of a break point and inspect values. I also use it to type code snippets to learn language features.
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