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Prefer composition over inheritance?
.... So the goose is more or less cooked once you derive from TypeA.
My acid test for the above is:
Does TypeB want to expose the complete interface (all public methods no less) of TypeA such that TypeB can be used where TypeA is expected? Indicates Inheritance.
e.g. A Cessna biplane will expos...
How to implement static class member functions in *.cpp file?
...
It is.
test.hpp:
class A {
public:
static int a(int i);
};
test.cpp:
#include <iostream>
#include "test.hpp"
int A::a(int i) {
return i + 2;
}
using namespace std;
int main() {
cout << A::a(4) <<...
Map vs Object in JavaScript
...
My tests in Chrome showed that maps to not use any significant amount more memory for maintaining order. I thing there was 0.1KB more for a million keys and I don't think that was for maintaining order. However, that ~0.1KB seem...
Write to file, but overwrite it if it exists
... @Griddo my shell is bash version 4.3.48(1)-release. echo "aaa" &>| test.txt results in error -bash: syntax error near unexpected token |. My noclobber is set On.
– Tu Bui
May 17 '19 at 17:46
...
Get int value from enum in C#
... cases, most of the time, I leave it as default value. but you can do enum Test { Item = 1 } and see that 1 == (int)Test.Item is equal.
– Jaider
Jun 28 '12 at 20:47
35
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What is array to pointer decay?
...claration.
Assume the following code:
char a[80];
strcpy(a, "This is a test");
The expression a is of type "80-element array of char" and the expression "This is a test" is of type "16-element array of char" (in C; in C++ string literals are arrays of const char). However, in the call to strc...
getApplication() vs. getApplicationContext()
... not be the application instance (which you obviously experienced with the test framework).
Why does getApplicationContext() exist in the first place ?
getApplication() is only available in the Activity class and the Service class, whereas getApplicationContext() is declared in the Context class.
...
Determine if variable is defined in Python [duplicate]
...d precautions against those who nevertheless do. Maintaining fragile, undertested legacy code with somewhat-broken design that you inherited from somebody else is a fact of life, and those who can only think of big-bang rewriting from scratch rather than cautiously and incrementally need to re-read ...
Event on a disabled input
...nput (+ script) should be
<input type="text" readonly="readonly" name="test" value="test" />
$('input[readonly]').click(function () {
$(this).removeAttr('readonly');
})
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Check if a method exists
Is there any way I can test if a method exists in Objective-C?
5 Answers
5
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