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leading zeros in rails
...
You can transform the integer into a string of that kind with:
result_string = '%02i' % your_integer
This is independent from how it gets saved in the db.
RDoc Documentation
Explanation & Examples
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Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...le slower than if it were properly aligned, but you'll get the correct result.)
On some other systems, such as SPARC, attempting to access a misaligned int object causes a bus error, crashing the program.
There have also been systems where a misaligned access quietly ignores the low-order bits of ...
When should I use the Visitor Design Pattern? [closed]
... Animal
{ public: void makeSound(); };
void Dog::makeSound()
{ std::cout << "woof!\n"; }
class Cat : public Animal
{ public: void makeSound(); };
void Cat::makeSound()
{ std::cout << "meow!\n"; }
But proceeding in this way, each time you want to add an operation you must modify the ...
Zoom in on a point (using scale and translate)
... the same size and in the same positions. But, you simply use the matrix multiplications within the javascript canvas to set the pan and the scale (zoom) of the context. So rather than redraw all the shapes in a different location. You draw them in the same place and move the viewport within javascr...
Handling an empty UITableView. Print a friendly message
...tyle: .Alert)
ac.addAction(UIAlertAction(title: "Hurray", style: .Default, handler: nil))
presentViewController(ac, animated: true, completion: nil)
}
These methods aren't mandatory, it's also possible to just show the empty state without a button etc.
For Swift 4
// MARK: - Deal with th...
What is the difference between Integer and int in Java?
...
Good example could be: Compilation error: List<int> Valid : List<Integer>
– hagai
Jan 18 '18 at 20:28
...
Maximum Java heap size of a 32-bit JVM on a 64-bit OS
...s) + " MiB)");
}
}
This will report the "Max Memory" based upon default heap allocation. So you still would need to play with -Xmx (on HotSpot). I found that running on Windows 7 Enterprise 64-bit, my 32-bit HotSpot JVM can allocate up to 1577MiB:
[C:scratch]> java -Xmx1600M MaxMemory
Er...
Throw keyword in function's signature
...utes in the question:
What is the output of the following code?
#include <iostream>
void throw_exception() throw(const char *)
{
throw 10;
}
void my_unexpected(){
std::cout << "well - this was unexpected" << std::endl;
}
int main(int argc, char **argv){
std::set_unexpe...
Which C++ idioms are deprecated in C++11?
...ibonacci can be easily replaced using generalized constant expressions
result_of: Uses of class template result_of should be replaced with decltype. I think result_of uses decltype when it is available.
In-class member initializers save typing for default initialization of non-static members with de...
Get button click inside UITableViewCell
...nder.tag == 0)
{
// Your code here
}
}
Updates for multiple Section:
You can check this link to detect button click in table view for multiple row and section.
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