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What exactly does @synthesize do?
...et using the dot notation: myObject.mapView. A property doesn't have to be based on an ivar, but most properties are. The @propertydeclaration simply tells the world that there is a property called mapView.
@synthesize mapView = mapView1;
This line tells the compiler to create a setter and getter ...
Iterating C++ vector from the end to the beginning
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Starting with c++20, you can use a std::ranges::reverse_view and a range-based for-loop:
#include<ranges>
#include<vector>
#include<iostream>
using namespace std::ranges;
std::vector<int> const vec{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
for(auto& i : views::reverse(vec))...
How do pointer to pointers work in C?
... ***cpp = &cp;
Now cpp stores the address of cp. So it has value 55 (based on the example above), and you guessed it: it is itself stored at address 60.
As to why one uses pointers to pointers:
The name of an array usually yields the address of its first element. So if the array contains ...
Django in / not in query
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to create abstract properties in python abstract classes
In the following code, I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod .
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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
... gcc-4.8.1 0.296s 0.288s
Update: on Ivy Bridge-based Core i3 three versions of gcc (4.6.4, 4.7.3, and 4.8.1) produce binaries with significantly different performance, but the assembly code has only subtle variations. So far, I have no explanation of this fact.
Assembly ...
Windows batch: sleep [duplicate]
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I haven't used this command - I just found it in ss64. You may also want to take a look at lukuluku's solution.
– Jaime Soto
Nov 30 '10 at 18:32
1
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In Typescript, How to check if a string is Numeric
...ull); // false
Number.isFinite(0); // true
Number.isFinite(2e64); // true
Note: there's a significant difference between the global function isFinite() and the latter Number.isFinite(). In the case of the former, string coercion is performed - so isFinite('0') === true whilst Nu...
Counting inversions in an array
... +1, See similar solution in C++11, including a general iterator-based solution and sample random testbed using sequences from 5-25 elements. Enjoy!.
– WhozCraig
Apr 20 '14 at 20:15
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