Yuqoridagi shartli ifodani bir ko'rganda ishlamaydi deb o'ylash tabiiy. Chunki Qanday qilib bir o'zgaruvchi bir vaqtda 3 xil qiymatga ega bo'lishi mumkin?
Bu albatta mumkin emas, agar o'zgaruvchi primitiv bo'lsa! Shuning uchun o'zgaruvchini dinamik ravishda primitiv qiymat qaytaruvchi obyektga aylantirish yechim bo'ladi.
Dinamik ravishda primitiv qiymat qaytarish
Buning uchun biz obyektimizga"valueOf" yoki "toString" metodlarini qo'shishimiz kerak bo'ladi. "[Symbol.toPrimitive]" orqali qo'shganimizda prioriteti ancha baland bo'ladi. Ya'ni, agar obyektda 3 ta metod ham bo'lsa JS interpretator
Yuqoridagi shartli ifodani bir ko'rganda ishlamaydi deb o'ylash tabiiy. Chunki Qanday qilib bir o'zgaruvchi bir vaqtda 3 xil qiymatga ega bo'lishi mumkin?
Bu albatta mumkin emas, agar o'zgaruvchi primitiv bo'lsa! Shuning uchun o'zgaruvchini dinamik ravishda primitiv qiymat qaytaruvchi obyektga aylantirish yechim bo'ladi.
Dinamik ravishda primitiv qiymat qaytarish
Buning uchun biz obyektimizga"valueOf" yoki "toString" metodlarini qo'shishimiz kerak bo'ladi. "[Symbol.toPrimitive]" orqali qo'shganimizda prioriteti ancha baland bo'ladi. Ya'ni, agar obyektda 3 ta metod ham bo'lsa JS interpretator
Telegram auto-delete message, expiring invites, and more
elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.
