“Digital Currency” Recently, Digital Currency is proceeding, but limited to wallets for purchase. To proceed more, digital currency must be applied to assets classes. Then, paper and coins currency can be invalid. If digital currency is applied to assets and used in smartphones, various types of Bonds and Securities are possible. Digital Currency is associated with Personal Information, and it causes fear and intrust to own government for some people. This problem can be solved by fear to lose money. If paper and coins are invalid, people must use digital currency. To proceed Digital Currency, deleting trust for Bitcoin is good way. Bitcoin is used for dark money, and not in control by trustable organizations. Digital Currency by government can compete Bitcoin if the government is trustable. In addition, Bitcoin has several deep security risk by hackers. Roll back is impossible when hackers steal Bitcoin.
2018/6/18. Swift is for iOS & macOS I am learning “ Hacking macOS with Swift ” on Udemy course. I stopped original app development now. Because I need studying more about Swift. Also I am learning “ iOS 11& Swift 4 ” on Udemy. Focusing on Swift Programming Language is needed for me. I hope that Swift will be major standard language in Mac world. And there are some signs about it. Swift is easier to learn , use & understand. Maybe there is not major updates after Swift 4. So if someone want to learn programming , stating from Swift is better , and now is good chance to learn. And I am regret about why I didn ’ t start more quickly. I started learning from last November. I could start more quickly!