大约有 15,475 项符合查询结果（耗时：0.0229秒） [XML]
Elegant ways to support equivalence (“equality”) in Python classes
...t copies sitting around, then it's usually good add an initial an identity test if other is self. This avoids the more lengthy dictionary comparison, and can be a huge savings when objects are used as dictionary keys.
– Dane White
Dec 3 '13 at 0:18
...
Create a pointer to two-dimensional array
...dimensional arrays to functions by reference:
int l_matrix[10][20];
void test(int matrix_ptr[static 10][20]) {
}
int main(void) {
test(l_matrix);
}
Unlike a plain pointer, this hints about array size, theoretically allowing compiler to warn about passing too-small array and spot obvious out...
A fast method to round a double to a 32-bit int explained
...s for numbers with absolute value < 2 ^ 51.
This is a little program to test it: ideone.com
#include <cstdio>
int main()
{
// round to nearest integer
printf("%.1f, %.1f\n", rint(-12345678.3), rint(-12345678.9));
// test tie-breaking rule
printf("%.1f, %.1f, %.1f, %.1f\n",...
What does “1 line adds whitespace errors” mean when applying a patch?
...m editing some markdown files of a cloned remote repository, and wanted to test creating and applying patches from one branch to another. However, every time I make any change at all, I get the following message during git apply :
...
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 ...