檢視包版本
條件：應至少安裝包裝。如果未在當前會話中載入，則不成問題。
## Checking package version which was installed at past or
## installed currently but not loaded in the current session
packageVersion("seqinr")
# [1] ‘3.3.3’
packageVersion("RWeka")
# [1] ‘0.4.29’
條件：應至少安裝包裝。如果未在當前會話中載入，則不成問題。
## Checking package version which was installed at past or
## installed currently but not loaded in the current session
packageVersion("seqinr")
# [1] ‘3.3.3’
packageVersion("RWeka")
# [1] ‘0.4.29’