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What does “static” mean in C?
... newbie, so here's an example:
#include <stdio.h>
void foo()
{
int a = 10;
static int sa = 10;
a += 5;
sa += 5;
printf("a = %d, sa = %d\n", a, sa);
}
int main()
{
int i;
for (i = 0; i < 10; ++i)
foo();
}
This prints:
a = 15, sa = 15
a = 15, sa =...
How to display multiple notifications in android
...
just replace your line with this
notificationManager.notify(Unique_Integer_Number, notification);
hope it will help you.
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How to declare constant map
...iteral map (as a pseudo-constant), you can do:
var romanNumeralDict = map[int]string{
1000: "M",
900 : "CM",
500 : "D",
400 : "CD",
100 : "C",
90 : "XC",
50 : "L",
40 : "XL",
10 : "X",
9 : "IX",
5 : "V",
4 : "IV",
1 : "I",
}
Inside a func you can declare it l...
How do you copy the contents of an array to a std::vector in C++ without looping?
...e arrays are perfectly valid containers for most STL algorithms--the raw pointer is equivalent to begin(), and (ptr + n) is equivalent to end().
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Single vs double quotes in JSON
...08565','name':'xyz','description':'can control TV\'s and more'})
Step 1: convert the incoming string into a dictionary using ast.literal_eval()
Step 2: apply json.dumps to it for the reliable conversion of keys and values, but without touching the contents of values:
>>> import ast
>&...
Which is preferred: Nullable.HasValue or Nullable != null?
...
Wow. I hate this syntactic sugar. int? x = null gives me the illusion that a nullable instance is a reference type. But the truth is that Nullable<T> is a value type. It feels I'd get a NullReferenceException to do: int? x = null; Use(x.HasValue).
...
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...
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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ActiveRecord OR query
...zation and make your queries DB agnostic. The only overhead is where Rails converts the syntax to SQL query. And it is just a matter of milliseconds. Ofcourse you should write the best performant SQL query and try to convert it to ActiveRecord syntax. If the SQL cannot be represented in ActiveRecord...
MaxJsonLength exception in ASP.NET MVC during JavaScriptSerializer
...rgeCollection, JsonRequestBehavior.AllowGet);
jsonResult.MaxJsonLength = int.MaxValue;
return jsonResult;
}
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