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Author: hope-data-science

CRAN-RELEASE

@@ -1,2 +1,2 @@
-This package was submitted to CRAN on 2020-02-17.
+This package was submitted to CRAN on 2020-02-28.
 Once it is accepted, delete this file and tag the release (commit 8797722950).

NAMESPACE

@@ -5,13 +5,16 @@ export(add_count_dt)
 export(all_dt)
 export(anti_join_dt)
 export(arrange_dt)
-export(as.data.table)
+export(as_dt)
 export(at_dt)
+export(complete_dt)
 export(count_dt)
 export(data.table)
 export(distinct_dt)
 export(drop_na_dt)
+export(dummy_dt)
 export(export_fst)
+export(fill_na_dt)
 export(filter_dt)
 export(filter_fst)
 export(fintersect)
@@ -24,6 +27,7 @@ export(fwrite)
 export(group_dt)
 export(if_dt)
 export(import_fst)
+export(in_dt)
 export(inner_join_dt)
 export(lag_dt)
 export(lead_dt)
@@ -34,6 +38,7 @@ export(mutate_when)
 export(nest_by)
 export(parse_fst)
 export(pull_dt)
+export(rbindlist)
 export(rename_dt)
 export(replace_na_dt)
 export(right_join_dt)
@@ -47,6 +52,7 @@ export(slice_dt)
 export(slice_fst)
 export(summarise_dt)
 export(summarize_dt)
+export(t_dt)
 export(top_frac_dt)
 export(top_n_dt)
 export(transmute_dt)
@@ -58,4 +64,3 @@ import(fst)
 import(stringr)
 importFrom(stats,na.omit)
 importFrom(stringr,str_detect)
-importFrom(tibble,as_tibble)

README.md

@@ -21,6 +21,7 @@ Enjoy the data science in *tidyfst* !
 - Never use in place replacement. 
 - Use suffix rather than prefix to increase the efficiency (especially when you have IDE with automatic code completion).
 - More flexible verbs for big data manipulation.
+- For some useful functions in *data.table*, if *tidyfst* could not optimize the API syntax, never rewrite but export them directly to guarantee the performance.
 - Supporting data importing and parsing with *fst*, details see [parse_fst/select_fst/filter_fst](https://hope-data-science.github.io/tidyfst/reference/fst.html) and [import_fst/export_fst](https://hope-data-science.github.io/tidyfst/reference/fst_io.html).
 - Flagship functions: [group_dt](https://hope-data-science.github.io/tidyfst/reference/group_dt.html), [unnest_dt](https://hope-data-science.github.io/tidyfst/reference/unnest_dt.html), [mutate_when](https://hope-data-science.github.io/tidyfst/reference/mutate_when.html), etc.
 
@@ -81,7 +82,7 @@ iris[3:8,] %>%
 
 ## Note
 
-In the current version of *tidyfst* (v0.6.9), *group_dt* is not fast enough. To boost the speed, use the development version (v0.7.7) from GitHub. The *tidyfst* is improving all the time, using the development version could help you improve the performance with minimun possible trouble that might come up.
+In the current version of *tidyfst* (v0.6.9), *group_dt* is not fast enough. To boost the speed, use the development version (v0.7.7) from GitHub.
 
 
 

cran-comments.md

@@ -1,4 +1,14 @@
 
+## 0.7.7
+1. Optimize `group_dt`. First, it is faster than before because I use `[][]` instead of ` %>% `. (Using `%>%` for `.SD` is slow) Second, I design an alternative to use `.SD` directly in `group_dt`, which might improve the efficiency further.
+2. Debug `filter_dt`.
+3. Add `fill_na_dt` to fill NAs in data.table. Debug all missing functions. Examples are refreshed.
+4. Debug `mutate_when`.
+5. Add `complete_dt` to complete a data.frame like `tidyr::complete`.
+6. Add `dummy_dt` to get dummy variables from columns.
+7. Add `t_dt` to transpose data frame efficiently.
+8. Remove the export of "as.data.table", add two functions:`as_dt` and `in_dt` to create a short cut to data.table facilities.
+
 ## 0.6.9
 Date: 20200227
 0. Reason for urgent update: The use of `show_tibble` violates the principals of programming. I hope this idea would not spread in the vignette. See changes in 4.
@@ -9,6 +19,7 @@ Date: 20200227
 5. Add `select_if_dt` function. Moreover, support negative conditional selection in `if_dt`.
 6. Delete the vignette entitled "Example 5: Tibble", as this feature is not used any more.
 7. Add vignette "Example 5:Fst" for better introduction of the feature.
+8. Update vignette "Example 1:Basic usage".
 
 ## 0.6.6 
 Date:20200224