class Program { static void Main() { var actions = new List<Action>();
for (int i = 0; i < 3; i++) { actions.Add(() => Console.WriteLine(i)); }
foreach (var action in actions) action(); } }
Варианты ответа: A)
1 2
B)
3 3
C)
0 0
D)Ошибка компиляции
---
✅ Правильный ответ: B
Почему: Лямбда-функции захватывают переменную i по ссылке, а не её значение на каждой итерации. После завершения цикла i == 3, и все замыкания ссылаются на одно и то же i. Это классическая ловушка замыканий в C#.
class Program { static void Main() { var actions = new List<Action>();
for (int i = 0; i < 3; i++) { actions.Add(() => Console.WriteLine(i)); }
foreach (var action in actions) action(); } }
Варианты ответа: A)
1 2
B)
3 3
C)
0 0
D)Ошибка компиляции
---
✅ Правильный ответ: B
Почему: Лямбда-функции захватывают переменную i по ссылке, а не её значение на каждой итерации. После завершения цикла i == 3, и все замыкания ссылаются на одно и то же i. Это классическая ловушка замыканий в C#.
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
Start with a fresh view of investing strategy. The combination of risks and fads this quarter looks to be topping. That means the future is ready to move in.Likely, there will not be a wholesale shift. Company actions will aim to benefit from economic growth, inflationary pressures and a return of market-determined interest rates. In turn, all of that should drive the stock market and investment returns higher.
