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R string as variable name

Tiange Ye answered on August 2, 2022 Popularity 6/10 Helpfulness 2/10

answer R string as variable name

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R string as variable name

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mtcars %>% filter({ print(!!var); (!!var) == 4 })
# [1] "cyl"
#  [1] mpg  cyl  disp hp   drat wt   qsec vs   am   gear carb
# <0 rows> (or 0-length row.names)

Popularity 6/10 Helpfulness 2/10 Language r

Source: stackoverflow.com

Tags: r string

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Contributed on Aug 02 2022

Tiange Ye

0 Answers Avg Quality 2/10

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R string as variable name

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library(rlang)
var <- 'cyl'
mtcars %>% filter((!!sym(var)) == 4)

#    mpg cyl  disp  hp drat    wt  qsec vs am gear carb
#1  22.8   4 108.0  93 3.85 2.320 18.61  1  1    4    1
#2  24.4   4 146.7  62 3.69 3.190 20.00  1  0    4    2
#3  22.8   4 140.8  95 3.92 3.150 22.90  1  0    4    2
# ...

Popularity 6/10 Helpfulness 3/10 Language r

Source: stackoverflow.com

Tags: string r

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Contributed on Aug 02 2022

Tiange Ye

0 Answers Avg Quality 2/10

R string as variable name

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mtcars %>% filter((!!as.symbol(var)) == 4)

mtcars %>% filter((!!as.name(var)) == 4)

Popularity 3/10 Helpfulness 1/10 Language r

Source: stackoverflow.com

Tags: string r

Link to this answer
Share Copy Link

Contributed on Aug 02 2022

Tiange Ye

0 Answers Avg Quality 2/10

R string as variable name

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R string as variable name

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R string as variable name

R string as variable name

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