![[Stable]](figures/lifecycle-stable.svg)
extract_possibly(...)Arguments
- ...
A list and a field name
See also
https://rdrr.io/cran/purrr/man/safely.html
Other helpers:
absolute_angle(),
add_dates(),
datetime_as_isoweek(),
datetime_as_seasonweek(),
datetime_as_season(),
datetime_as_turtle_date(),
exclude_training_species(),
exclude_training_surveys(),
fdate_as_tdate(),
filter_missing_site(),
filter_missing_survey(),
filter_surveys_missing_end(),
filter_surveys_requiring_qa(),
filter_wastd_season(),
get_more(),
gj_linestring_to_st_linestring(),
httpdate_as_gmt08_turtle_date(),
httpdate_as_gmt08(),
httpdate_as_season(),
humanize(),
join_tsc_sites(),
leaflet_basemap(),
map_chr_hack(),
mean_bearing(),
mis_bearing(),
odkc_works(),
read_table(),
sentencecase(),
sf_as_tbl(),
tdate_as_fdate(),
tracks_as_geojson(),
tun(),
urlize(),
verify_odkc_turtledata(),
verify_wamtram_data(),
verify_wastd_data(),
wastd_works(),
wastdr_msg_abort(),
wastdr_msg_info(),
wastdr_msg_noop(),
wastdr_msg_success(),
wastdr_msg_warn(),
wastdr_settings(),
wastdr_setup()
Examples
lol <- list(field1 = 1, field2 = 2, field3 = 3, field4 = 4, field5 = 5)
extract_possibly(lol, "field1")
#> $field1
#> [1] 1
#>
extract_possibly(lol, "field8")
#> $<NA>
#> NULL
#>