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ARROW-14824 [R] Implement bindings for lubridate::epiyear() #12545

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ARROW-14824 [R] Implement bindings for lubridate::epiyear() #12545

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8e07556
added `epiyear()` binding
dragosmg Mar 2, 2022
81d193b
unit test for extracting epiyear from date
dragosmg Mar 2, 2022
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1 change: 1 addition & 0 deletions r/NEWS.md
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
* `tz()` to extract/get timezone
* `semester()` to extract/get semester
* `dst()` to get daylight savings time indicator.
* `epiyear()` to get epiyear

# arrow 7.0.0

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1 change: 1 addition & 0 deletions r/R/expression.R
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Expand Up @@ -67,6 +67,7 @@
"isoweek" = "iso_week",
"epiweek" = "us_week",
"isoyear" = "iso_year",
"epiyear" = "us_year",
"minute" = "minute",
"quarter" = "quarter",
# second is defined in dplyr-functions.R
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18 changes: 18 additions & 0 deletions r/tests/testthat/test-dplyr-funcs-datetime.R
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Expand Up @@ -330,6 +330,15 @@ test_that("extract isoyear from timestamp", {
)
})

test_that("extract epiyear from timestamp", {
compare_dplyr_binding(
.input %>%
mutate(x = epiyear(datetime)) %>%
collect(),
test_df
)
})

test_that("extract quarter from timestamp", {
compare_dplyr_binding(
.input %>%
Expand Down Expand Up @@ -511,6 +520,15 @@ test_that("extract isoyear from date", {
)
})

test_that("extract epiyear from date", {
compare_dplyr_binding(
.input %>%
mutate(x = epiyear(date)) %>%
collect(),
test_df
)
})

test_that("extract quarter from date", {
compare_dplyr_binding(
.input %>%
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