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APP INVENTOR硬件交互学习教程07——多个参数上报 - 创客硬件开发 - 清泛IT...
...no代码，温度和电位计使用随机数生成
// 引脚定义
const int ledPin1 = 5;// the number of the LED pin
const int ledPin2 = 6;
const int ledPin3 = 3;
const int bluePin = 6;// the number of the LED pin
const int greenPin = 5;
cons...
Generate random numbers using C++11 random library
...and-Considered-Harmful
#include <random>
#include <iostream>
int main() {
std::random_device rd;
std::mt19937 mt(rd());
std::uniform_real_distribution<double> dist(1.0, 10.0);
for (int i=0; i<16; ++i)
std::cout << dist(mt) << "\n";
}
We u...
onMeasure custom view explanation
...ndroid how big you want your custom view to be dependent the layout constraints provided by the parent; it is also your custom view's opportunity to learn what those layout constraints are (in case you want to behave differently in a match_parent situation than a wrap_content situation). These cons...
What are 'closures' in .NET?
...sure is a block of code which can be executed at a later time, but which maintains the environment in which it was first created - i.e. it can still use the local variables etc of the method which created it, even after that method has finished executing.
The general feature of closures is implemen...
Intelligent way of removing items from a List while enumerating in C#
...moveAll(x => elems.Contains(x));
This assume that your loop is solely intended for removal purposes, of course. If you do need to additional processing, then the best method is usually to use a for or while loop, since then you're not using an enumerator:
for (int i = myList.Count - 1; i >=...
What's the rationale for null terminated strings?
... pointers can do.
the core language just include minimal syntaxic sugar to convert
something between double quotes to a
bunch of chars (really a bunch of
bytes). In some cases it can be used
to initialize things completely
unrelated with text. For instance xpm
image file format is a valid C source
t...
How do I generate a random int number?
How do I generate a random integer in C#?
32 Answers
32
...
How to declare std::unique_ptr and what is the use of it?
...
The constructor of unique_ptr<T> accepts a raw pointer to an object of type T (so, it accepts a T*).
In the first example:
unique_ptr<int> uptr (new int(3));
The pointer is the result of a new expression, while in the second example:
unique_ptr<double> uptr...
C++ templates Turing-complete?
...
Example
#include <iostream>
template <int N> struct Factorial
{
enum { val = Factorial<N-1>::val * N };
};
template<>
struct Factorial<0>
{
enum { val = 1 };
};
int main()
{
// Note this value is generated at compile time.
/...
How do I sort one vector based on values of another
...for each x
sort(order(y)[x]) #sorts by that order
y[sort(order(y)[x])] #converts orders back to numbers from orders
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