# 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/ja6k4wq
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理解並使用 Golang 的 “omitempty” 特性**
在使用 Go (Golang) 並將數據編碼爲 JSON 時，您可能會遇到這樣的情況：如果某些字段的值爲空，則需要從編碼輸出中省略這些字段。這就是 Golang 的 omitempty 功能發揮作用的地方。struct 字段標記中的 omitempty 選項會告訴編碼器，如果字段爲空值，則跳過該字段。什麼是  “Empty Value”?在 Go 中，Empty Value 的定義是：布爾類型爲 ⌘ Read more