Function in-class exercise2

Gives a list of attached packages and R objects

search() 

## [1] ".GlobalEnv"        "package:stats"     "package:graphics" 
## [4] "package:grDevices" "package:utils"     "package:datasets" 
## [7] "package:methods"   "Autoloads"         "package:base"

Apply the function of “ls”(list) to the corresponding element of the 9 attached packages we searched, and return a list.

lapply(search(), ls)

Give the length of the objects in the 9 attached packaged we searched and return a list.

lapply(lapply(search(), ls), length)

## [[1]]
## [1] 0
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## [1] 449
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## [1] 87
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## [1] 113
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## [[5]]
## [1] 245
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## [[6]]
## [1] 104
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## [[7]]
## [1] 203
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## [[8]]
## [1] 0
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## [1] 1246