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Get size of all tables in database
... i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN
sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN
sys.schemas s ON t.schema_id = s.schema_id
WHERE
t.NAME NOT LIKE 'dt%'
AND t.is_ms_shipped = 0
AND i.OBJECT_ID > 255
GROUP BY
t...
Difference between char* and const char*?
...e points, as it could result in Undefined Behavior.
String literals may be allocated in read only memory regions (implementation defined) and an user program should not modify it in anyway. Any attempt to do so results in Undefined Behavior.
So the only difference in that case (of usage with s...
Making the Android emulator run faster
...for the AVD Manager to pick up the Intel Atom (x86) CPU option. Tip: Don't allocate too much RAM. With 1GB RAM, emulator failed to start (with GPU) but with 512MB RAM it ran smoothly and booted really quickly (again with GPU).
– ADTC
Jul 28 '13 at 16:11
...
In Clojure, when should I use a vector over a list, and the other way around?
...
Vectors have O(1) random access times, but they have to be preallocated. Lists can be dynamically extended, but accessing a random element is O(n).
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What is a C++ delegate?
...
std::function doesn't always dynamically allocate
– Lightness Races in Orbit
Jul 13 '19 at 14:56
3
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Why should I prefer to use member initialization lists?
...le, but imagine if you will that A's default constructor did more, such as allocating memory or opening files. You wouldn't want to do that unnecessarily.
Furthermore, if a class doesn't have a default constructor, or you have a const member variable, you must use an initializer list:
class A
{
p...
recursion versus iteration
...w the return back to the caller functions. In many cases, memory has to be allocated and copied to implement scope isolation.
Some optimizations, like tail call optimization, make recursions faster but aren't always possible, and aren't implemented in all languages.
The main reasons to use recursi...
Can't use Swift classes inside Objective-C
...}
}
Objective-C code (calling code)
SwiftClass *obj = [[SwiftClass alloc] initWithStringValue: @"Hello World!"];
[obj printValue];
NSString * str = obj.stringValue;
obj.stringValue = @"HeLLo wOrLd!!!";
Result
4. Call Objective-c class from Swift code
Objective-C class (ObjcClass.h)
#impo...
How to avoid overflow in expr. A * B - C * D
... Both long long and double are 64 bits. Since double has to allocate some bits for the exponent, it has a smaller range of possible values without loss of precision.
– Jim Garrison
Nov 5 '12 at 19:03
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iPhone: How to switch tabs with an animation?
...oller:(UIViewController *)toVC
{
return [[TabSwitchAnimationController alloc] init];
}
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