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現在のAppStoreのトップセールス1位を取得する one-liner

More than 3 years have passed since last update.

RSS ( https://rss.itunes.apple.com/jp/ ) のエントリの1番目をみるだけ。

コード

$ ruby -r rss -e "p RSS::Parser.parse('https://itunes.apple.com/jp/rss/topgrossingapplications/limit=10/xml').entries[0].title.content"
"モンスターストライク - mixi, Inc"

zsh の関数にしてみると

function apps() {
  index=$[$1 - 1]
  echo "AppStore rank $1 位:"
  ruby -r rss -e "puts RSS::Parser.parse('https://itunes.apple.com/jp/rss/topgrossingapplications/limit=10/xml').entries[$index].title.content"
}
$ apps 1
AppStore rank 1 位:
モンスターストライク - mixi, Inc

こうなった :)

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