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Other 2021-11-08 12:40:11
using like filter dplyr
library(rbenchmark) library(tidyverse) # The data. Data expo 09. ASA Statistics Computing and Graphics # http://stat-computing.org/dataexpo/2009/the-data.html df <- read_csv("Downloads/2008.csv") print(dim(df)) # [1] 7009728 29 benchm... Add solution -
R 2021-10-27 04:45:13
grepl filter r
df1 %>% filter(!grepl("^x|xx$", fruit)) Add solution -
Other 2021-10-15 06:21:07
string manipulation
String manipulations: charAt(indexNumber): it returns the char at the given index length(): returns the total number of characters as int length is ALWAYS one unit above the maximum index number maxIndex: length()-1; concat(Value): Concatenation, conc... Add solution
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