Today, I want to talk about Java's Optional—a powerful feature that helps us avoid NullPointerExceptions and write more expressive code.
Here are some key points to remember:
- Optional is a container object which may or may not contain a non-null value. - It helps in indicating that a value might be absent, preventing null checks throughout your code. - You can create an Optional using:
Optional<String> optional = Optional.of("Hello");
- To avoid creating an Optional with a null value, use:
Today, I want to talk about Java's Optional—a powerful feature that helps us avoid NullPointerExceptions and write more expressive code.
Here are some key points to remember:
- Optional is a container object which may or may not contain a non-null value. - It helps in indicating that a value might be absent, preventing null checks throughout your code. - You can create an Optional using:
Optional<String> optional = Optional.of("Hello");
- To avoid creating an Optional with a null value, use:
Like a stock, you can buy and hold Bitcoin as an investment. You can even now do so in special retirement accounts called Bitcoin IRAs. No matter where you choose to hold your Bitcoin, people’s philosophies on how to invest it vary: Some buy and hold long term, some buy and aim to sell after a price rally, and others bet on its price decreasing. Bitcoin’s price over time has experienced big price swings, going as low as $5,165 and as high as $28,990 in 2020 alone. “I think in some places, people might be using Bitcoin to pay for things, but the truth is that it’s an asset that looks like it’s going to be increasing in value relatively quickly for some time,” Marquez says. “So why would you sell something that’s going to be worth so much more next year than it is today? The majority of people that hold it are long-term investors.”
Telegram Gives Up On Crypto Blockchain Project
Durov said on his Telegram channel today that the two and a half year blockchain and crypto project has been put to sleep. Ironically, after leaving Russia because the government wanted his encryption keys to his social media firm, Durov’s cryptocurrency idea lost steam because of a U.S. court. “The technology we created allowed for an open, free, decentralized exchange of value and ideas. TON had the potential to revolutionize how people store and transfer funds and information,” he wrote on his channel. “Unfortunately, a U.S. court stopped TON from happening.”
