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What is the difference between a reference type and value type in c#?
Some guy asked me this question couple of months ago and I couldn't explain it in detail. What is the difference between a reference type and a value type in C#?
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How to define object in array in Mongoose schema correctly with 2d geo index
...ay , "default" : [] }
In the second case during insertion make the object and push it into the array like
db.update({'Searching criteria goes here'},
{
$push : {
trk : {
"lat": 50.3293714,
"lng": 6.9389939
} //inserted data is the object to be inserted
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Are there other whitespace codes like   for half-spaces, em-spaces, en-spaces etc useful in HTML
...than one space in the font, except for nbsp, where it renders as one space and imposes the non-breaking character. A real shame. There are cases where only a character will do, for instance when padding is being controled or passed to something else with constructs like before:
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Why aren't python nested functions called closures?
I have seen and used nested functions in Python, and they match the definition of a closure. So why are they called nested functions instead of closures ?
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What is the best collation to use for MySQL with PHP? [closed]
...neral website where you aren't 100% sure of what will be entered? I understand that all the encodings should be the same, such as MySQL, Apache, the HTML and anything inside PHP.
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val-mutable versus var-immutable in Scala
...that means is that, if I have an expression "e", I could make a val x = e, and replace e with x. This is the property that mutability break. Whenever you need to make a design decision, maximize for referential transparency.
As a practical matter, a method-local var is the safest var that exists, s...
What is the purpose of Rank2Types?
...morphic. In the example map uses id as if it had type String -> String. And of course you can also pass a simple monomorphic function of the given type instead of id. Without rank2types there is no way for a function to require that its argument must be a polymorphic function and thus also no way...
Coding Practices which enable the compiler/optimizer to make a faster program
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Write to local variables and not output arguments! This can be a huge help for getting around aliasing slowdowns. For example, if your code looks like
void DoSomething(const Foo& foo1, const Foo* foo2, int numFoo, Foo& barOut)
{
for (int...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
... the difference between __PRETTY_FUNCTION__ , __FUNCTION__ , __func__ , and where are they documented? How do I decide which one to use?
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How does lucene index documents?
...it is processed through the same analyzer that was used to build the index and then used to look up the matching term(s) in the index. That provides a list of documents that match the query.
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