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What is an efficient way to implement a singleton pattern in Java? [closed]
... Hi, Can anybody tell me how this type of singleton can be mocked and tested in test cases. I tried to swap fake singleton instance for this type but couldn't.
– Ashish Sharma
Mar 18 '11 at 11:03
...
What is the JavaScript equivalent of var_dump or print_r in PHP? [duplicate]
... /^[0-9]+$/;
if (!isNaN(v) && v % 1 === 0 && er.test(3.0)) {
out = 'int';
}
*/
break;
case "boolean":
out += ": " + v;
break;
case "string":
out += "(" + v.length + '): "' + v + '"';
break;
...
How to set the prototype of a JavaScript object that has already been instantiated?
...ct.
Instead of writing
function trim(x){ /* implementation */ }
trim(' test ');
you write
' test '.trim();
The above syntax has been coined the term OOP because of the object.method() syntax.
Some of OOPs main advantage over traditional functional programming includes:
Short methods...
What is the http-header “X-XSS-Protection”?
...ell, it's presented in marketing fluff, but the code seem to work. You can test it here enhanceie.com/test/xss/BlockMode.asp (also linked in the MSDN blog post).
– Luca Invernizzi
Dec 3 '13 at 11:21
...
How do you do Impersonation in .NET?
...s. Type 9 only provides impersonation on outbound network credentials. I tested types 2, 3 & 8 from a WinForms app, and they do properly update the current principal. One would assume types 4 and 5 do also, for service or batch applications. See the link I referenced in the post.
...
What is the difference between exit() and abort()?
... It does not call destructors for automatic objects though. So
A a;
void test() {
static A b;
A c;
exit(0);
}
Will destruct a and b properly, but will not call destructors of c. abort() wouldn't call destructors of neither objects. As this is unfortunate, the C++ Standard describes ...
ctypes - Beginner
...utorial.
First, write your C library. Here's a simple Hello world example:
testlib.c
#include <stdio.h>
void myprint(void);
void myprint()
{
printf("hello world\n");
}
Now compile it as a shared library (mac fix found here):
$ gcc -shared -Wl,-soname,testlib -o testlib.so -fPIC testlib....
What's the difference between IEquatable and just overriding Object.Equals()?
I want my Food class to be able to test whenever it is equal to another instance of Food . I will later use it against a List, and I want to use its List.Contains() method. Should I implement IEquatable<Food> or just override Object.Equals() ? From MSDN:
...
Explaining Python's '__enter__' and '__exit__'
...El\Desktop\myfile.txt") as logfile:
print("Main")
logfile.logging("Test1")
logfile.logging("Test2")
I hope now you have basic understanding of both __enter__ and __exit__ magic methods.
share
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...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...udev finds out about the "built-in" ttyS* serial ports, they'll have to be tested with ioctl or similar as in the other answers.
– Reed Hedges
Mar 3 '16 at 20:38
...