# 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/wgf5plq
【Go Web 開發】創建自定義性能參數**
expvar 處理程序提供的默認信息是一個好的開始。但我們可以通過在 JSON 響應中開放一些額外的定製指標來讓它變得更有用。爲了說明自定義性能參數,我們先開始一個簡單的,將應用程序的版本號添加到 JSON 響應中。如果你忘記了,版本號是定義在 main.go 文件中的字符串常量值爲:"1.0.0"。實現的代碼分爲兩個基本步驟:1、使用 expvar 包註冊一個自定義變量。2、需要爲變量賦值。代碼 ⌘ Read more