lambda

There is a function that simply outputs numbers from a vector. void test(std::vector<int> vec) { for(int item: vec ... ‘main()::’ to ‘std::vector I understand that as an argument the lambda itself is passed, but how to pass what it returns?

The question recently asked was about reverse sorting in alphabetical order. In this case, the question is solved simply - b ... meet the specified conditions. I.e., the reverse attribute is not always relevant a solution for reverse sorting of strings.

Dear Gurus, tell me, is this approach acceptable for practical application: #include <functional> #include <iostrea ... ut: Assigning Derived_1 Assigning Derived_2 Assigning Derived_1 Assigning Derived_2 Assigning Derived_1 Assigning Derived_2

What is it, why is it used? Examples...

The task was to make a selection of several Count-values from 2 database tables. I decided to do this using lambda expression ... ); It works, but obviously the implementation is bad. How do I make a normal count selection using only lambda expressions?

You need to get the minimum value from tuple with the exception of zeros. I wrote this function: print(min(values, key=lambda ... 1, 0, 1, 0), prints 1, all correct, but if values = (0, 1, 0, 1, 1, 0), prints 0. Tell me, please, what could be the problem?

I have two dozen lambdas, 10 of them with tag1 tag, the second 10 with tag2 tag. I need to count the number of calls and the ... oes not quite suit me, the number of lambdas will be increase over time, and such operations will become long and expensive

There is a function: <R> Stream<R> map(Function<? super T, ? extends R> mapper); It performs operations ... fter all, we just pass the implementation with specific T(User) and R(String), where can we use subclasses and superclasses?

While studying Python, I came across lambda - functions. But nowhere have I found an example where they are really needed-onl ... y: x**2 + y**2), where it is quite possible to remove the functional wrapper. What are they really necessary and useful for?

I wrote this line: a = [lambda x : x^n for n in range(10)] At the same time, at each iteration for i in range(10): print(a[i](2)) Outputs 11, a for i in range(10): print(a[2](i)) Issued: 9 8 11 10 13 12 15 14 1 0 Why?

I need to create a unit matrix approximately as follows: a = np.fromfunction(lambda x,y: int(x == y), (10,10)) I get an er ... ars Although the lambda function works separately (screenshot below). Why then does the error come out? And how to fix it?

What is the difference between anonymous methods and lambda expressions? In anonymous methods, we can do without parameters, ... delegate { Console.WriteLine("some information") }; What other pros/cons do anonymous methods and lambda expressions have?

// C++11 #include <functional> using fp = std::function<int()>; fp f1(int i) { i *= 100; return [i]() mu ... t possible to use what functions f1 and f2 return? If so, where are the closure objects stored with their captured variables?

There is a code: while (true) { int i = 0; while (i++ < ...) { int curr = i; futures.add(executor ... ctively final". Is there any way around this limitation without creating an extra local variable (curr), or is it impossible?

I make a recursive lambda (for certainty - factorial). That's how everything works perfectly: std::function<int(int)> ... d - to use a named lambda inside an unnamed one (for example, the same f above), but this is still not quite what I wanted :)

This question is already answered here: ... , in streams, sometimes in lambda expressions. What does it mean? What does List :: stream mean? P.S. And what is it called?

I was wondering how method references(::) are implemented in Java 8. For comparison, I will describe how they are implemented ... rible is hidden behind them. Is this really true? Has anyone looked at what code on the JVM translates references to methods?