# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/72zooxq
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Rust: 如何區分可變引用還是可變變量？-mut VS mut
變量要在 Rust 中創建不可變變量，只需編寫 let x = 1337，這是簡單的。如果想創建一個以後可以改變的變量，只需在 let 之後添加 mut 關鍵字。添加 mut 關鍵字通知其他人該變量將在代碼的其他地方被修改。例如：let mut x = 1337 和 let y = 42，如圖：引用目前，一切都很簡單。然而，當使用 mut 引用時，事情開始變得有點棘手。讓我們創建一些。let mu ⌘ Read more=