Add support for everything() and docstrings for helper functions.

NEWS.md

@@ -1,5 +1,9 @@
 # TidierData.jl updates
 
+## v0.12.2 - 2023-09-20
+- Adds support for `everything()` selection helper.
+- Adds docstrings for `everything()`, `starts_with()`, `ends_with()`, and `matches()`
+
 ## v0.12.1 - 2023-09-11
 - Fixes bug in `@separate()` so that the value of `into` supports interpolation.
 

Project.toml

@@ -1,7 +1,7 @@
 name = "TidierData"
 uuid = "fe2206b3-d496-4ee9-a338-6a095c4ece80"
 authors = ["Karandeep Singh"]
-version = "0.12.1"
+version = "0.12.2"
 
 [deps]
 Chain = "8be319e6-bccf-4806-a6f7-6fae938471bc"

README.md

@@ -103,7 +103,7 @@ TidierData.jl also supports the following helper functions:
 - `n()` and `row_number()`
 - `ntile()`
 - `lag()` and `lead()`
-- `starts_with()`, `ends_with()`, `matches()`, and `contains()`
+- `everything()`, `starts_with()`, `ends_with()`, `matches()`, and `contains()`
 - `as_float()`, `as_integer()`, and `as_string()`
 - `is_float()`, `is_integer()`, and `is_string()`
 

docs/src/index.md

@@ -117,7 +117,7 @@ TidierData.jl also supports the following helper functions:
     - `n()` and `row_number()`
     - `ntile()`
     - `lag()` and `lead()`
-    - `starts_with()`, `ends_with()`, `matches()`, and `contains()`
+    - `everything()`, `starts_with()`, `ends_with()`, `matches()`, and `contains()`
     - `as_float()`, `as_integer()`, and `as_string()`
     - `is_float()`, `is_integer()`, and `is_string()`
 ```

src/TidierData.jl

@@ -15,7 +15,7 @@ using Reexport
 @reexport using Statistics
 @reexport using ShiftedArrays: lag, lead
 
-export TidierData_set, across, desc, n, row_number, starts_with, ends_with, matches, if_else, case_when, ntile, 
+export TidierData_set, across, desc, n, row_number, everything, starts_with, ends_with, matches, if_else, case_when, ntile, 
       as_float, as_integer, as_string, is_float, is_integer, is_string, @select, @transmute, @rename, @mutate, @summarize, @summarise, @filter,
       @group_by, @ungroup, @slice, @arrange, @distinct, @pull, @left_join, @right_join, @inner_join, @full_join,
       @pivot_wider, @pivot_longer, @bind_rows, @bind_cols, @clean_names, @count, @tally, @drop_missing, @glimpse, @separate,

src/docstrings.jl

@@ -2230,7 +2230,7 @@ const docstring_slice_sample =
 """
     @slice_sample(df, [n = 1, prop, replace = false])
 
-Randomly sample rows from a DataFrame `df` or from each group in a GroupedDataFrame. The default is to return 1 row. Either the number of rows (`n`) or the proportion of rows (`prop`) should be provided as a keyword argument
+Randomly sample rows from a DataFrame `df` or from each group in a GroupedDataFrame. The default is to return 1 row. Either the number of rows (`n`) or the proportion of rows (`prop`) should be provided as a keyword argument.
 
 # Arguments
 - `df`: The source data frame or grouped data frame from which to sample rows.
@@ -2300,4 +2300,144 @@ julia> @chain df begin
    4 │     9     19
    5 │     8     18
 ```
-"""
+"""
+
+const docstring_starts_with =
+"""
+    starts_with(prefix)
+
+Select all columns starting with the `prefix`.
+
+# Arguments
+- `prefix`: A string.
+
+# Examples
+```julia
+julia> df = DataFrame(a_1 = 1:5, a_2 = 11:15, b_1 = 21:25);
+
+julia> @chain df begin 
+       @select(starts_with("a"))
+       end
+5×2 DataFrame
+ Row │ a_1    a_2   
+     │ Int64  Int64 
+─────┼──────────────
+   1 │     1     11
+   2 │     2     12
+   3 │     3     13
+   4 │     4     14
+   5 │     5     15
+```
+"""
+
+const docstring_ends_with =
+"""
+    ends_with(suffix)
+
+Select all columns ending with the `suffix`.
+
+# Arguments
+- `suffix`: A string.
+
+# Examples
+```julia
+julia> df = DataFrame(a_1 = 1:5, a_2 = 11:15, b_1 = 21:25);
+
+julia> @chain df begin 
+       @select(ends_with("1"))
+       end
+5×2 DataFrame
+ Row │ a_1    b_1   
+     │ Int64  Int64 
+─────┼──────────────
+   1 │     1     21
+   2 │     2     22
+   3 │     3     23
+   4 │     4     24
+   5 │     5     25
+```
+"""
+
+const docstring_matches =
+"""
+    matches(pattern, [flags])
+
+Select all columns matching the `pattern`.
+
+# Arguments
+- `pattern`: A string.
+- `flags`: Optional string containing flags. "i" = Do case-insensitive pattern matching. "m" = Treat string as multiple lines. "s" = Treat string as a single line. "x" = Tells the regular expression parser to ignore most whitespace that is neither backslashed nor within a character class. You
+can use this to break up your regular expression into (slightly) more readable parts.
+
+# Examples
+```julia
+julia> df = DataFrame(a_1 = 1:5, a_2 = 11:15, b_1 = 21:25);
+
+julia> @chain df begin 
+       @select(matches("^a"))
+       end
+5×2 DataFrame
+ Row │ a_1    a_2   
+     │ Int64  Int64 
+─────┼──────────────
+   1 │     1     11
+   2 │     2     12
+   3 │     3     13
+   4 │     4     14
+   5 │     5     15
+
+julia> @chain df begin 
+       @select(matches("1\$"))
+       end
+5×2 DataFrame
+ Row │ a_1    b_1   
+     │ Int64  Int64 
+─────┼──────────────
+   1 │     1     21
+   2 │     2     22
+   3 │     3     23
+   4 │     4     24
+   5 │     5     25
+
+julia> @chain df begin 
+       @select(matches("A", "i"))
+       end
+5×2 DataFrame
+ Row │ a_1    a_2   
+     │ Int64  Int64 
+─────┼──────────────
+   1 │     1     11
+   2 │     2     12
+   3 │     3     13
+   4 │     4     14
+   5 │     5     15
+```
+"""
+
+const docstring_everything =
+"""
+    everything()
+
+Select all (remaining) columns.
+
+# Arguments
+- None
+
+# Examples
+```julia
+julia> df = DataFrame(a_1 = 1:5, a_2 = 11:15, b_1 = 21:25);
+
+julia> @chain df begin 
+       @select(b_1, everything())
+       end
+5×3 DataFrame
+ Row │ b_1    a_1    a_2   
+     │ Int64  Int64  Int64 
+─────┼─────────────────────
+   1 │    21      1     11
+   2 │    22      2     12
+   3 │    23      3     13
+   4 │    24      4     14
+   5 │    25      5     15
+```
+"""

src/helperfunctions.jl

@@ -1,8 +1,23 @@
 # This file is intended for any catch-all helper functions that don't deserve
 # their own documentation page and don't have any outside licenses.
 
-# Need to expand with docs
-# These are just aliases
+# These are aliases for existing Julia functions
+"""
+$docstring_starts_with
+"""
 starts_with(args...) = startswith(args...)
+
+"""
+$docstring_ends_with
+"""
 ends_with(args...) = endswith(args...)
-matches(pattern, flags...) = Regex(pattern, flags...)
+
+"""
+$docstring_matches
+"""
+matches(pattern, flags...) = Regex(pattern, flags...)
+
+"""
+$docstring_everything
+"""
+everything() = All()