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Why should I prefer to use member initialization lists?
...efault constructor. Consider:
class A
{
public:
A() { x = 0; }
A(int x_) { x = x_; }
int x;
};
class B
{
public:
B()
{
a.x = 3;
}
private:
A a;
};
In this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A be...
MaxJsonLength exception in ASP.NET MVC during JavaScriptSerializer
...rgeCollection, JsonRequestBehavior.AllowGet);
jsonResult.MaxJsonLength = int.MaxValue;
return jsonResult;
}
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How to find time complexity of an algorithm
...ions to describe this as just O(N).
Why do we remove the two 2s ?
We are interested in the performance of the algorithm as N becomes large.
Consider the two terms 2N and 2.
What is the relative influence of these two terms as N becomes large? Suppose N is a million.
Then the first term is 2 mi...
typedef struct vs struct definitions [duplicate]
...
The common idiom is using both:
typedef struct S {
int x;
} S;
They are different definitions. To make the discussion clearer I will split the sentence:
struct S {
int x;
};
typedef struct S S;
In the first line you are defining the identifier S within the struct...
How to print the contents of RDD?
...
You can convert your RDD to a DataFrame then show() it.
// For implicit conversion from RDD to DataFrame
import spark.implicits._
fruits = sc.parallelize([("apple", 1), ("banana", 2), ("orange", 17)])
// convert to DF then show it...
How do I overload the [] operator in C# [duplicate]
...
public int this[int key]
{
get => GetValue(key);
set => SetValue(key, value);
}
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Declare slice or make slice?
In Go, what is the difference between var s []int and s := make([]int, 0) ?
4 Answers
...
How to update the value stored in Dictionary in C#?
... to update value for a specific key in a dictionary Dictionary<string, int> ?
7 Answers
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What is a “callback” in C and how are they implemented?
...y other generic programming concept.
They're implemented using function pointers. Here's an example:
void populate_array(int *array, size_t arraySize, int (*getNextValue)(void))
{
for (size_t i=0; i<arraySize; i++)
array[i] = getNextValue();
}
int getNextRandomValue(void)
{
ret...
Why do I get a “Null value was assigned to a property of primitive type setter of” error message whe
...s SO thread, the solution is to use the non-primitive wrapper types; e.g., Integer instead of int.
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