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r tibble select rows containing string
dplyr::filter(df, !grepl("RTB",TrackingPixel))
Source: stackoverflow.com
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
benchmark(
"str_detect" = {df %>% filter(str_detect(Dest, 'MCO|BWI'))},
"grepl" = {df %>% filter(grepl('MCO|BWI', Dest))},
replications = 10,
columns = c("test", "replications", "elapsed", "relative", "user.self", "sys.self"))
# test replications elapsed relative user.self sys.self
# 2 grepl 10 16.480 1.513 16.195 0.248
# 1 str_detect 10 10.891 1.000 9.594 1.281
Source: stackoverflow.com
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