# 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/4a4776a
Go1-20 新特性:context 支持自定義取消原因**
問題熟悉 Go 語言的同學都知道,context 包只對外提供了兩種取消原因 context.DeadlineExceeded 和 context.Canceled,不支持自定義原因,就像下面這樣:func main() {    // Pass a context with a timeout to tell a blocking function that it    // should ab ⌘ Read more