%nin%                   inverse of %in%
add_time_to_date        convert separate lists of dates and times to
                        POSIXlt objects
affixFields             update a set of data frame field names
allIsInteger            check whether vector represents all integer
                        values, not that the same as 'is.integer'
allIsNumeric            check whether character vector represents all
                        numeric values
areNumeric              which elements of a vector are numeric
asNumericNoWarn         convert factor or vector to numeric without
                        warnings
as_char_no_warn         convert to character vector without warning
bad_input               bad input data for tests
binary_col_names        names of fields which are numeric, binary or
                        combinations thereof
build_formula           build simple linear formula from variable names
combn_subset            all unique combinations of a vector and all its
                        non-zero subsets
countIsNa               count NA in vector
countNonNaCumulative    running totals of number of non-NA values in
                        consecutive fields
countNonNaPairs         count which combinations of fields have at
                        least one non-NA
countNotNumeric         count non-numeric elements
countNumeric            count numeric elements
dput_expect_equal       dput a testthat test
dropRowsWithNAField     drops rows with NA values in specified fields
drop_duplicate_fields   drop duplicate fields
expect_that_combine_all_args
                        alternative 'expect_that' from 'testthat' which
                        permutes all the inputs to a function which
                        should give the same result where n args >=2
                        and the function is commutative.
extreme_numbers         extreme numbers
factor_nosort           Fast Factor Generation
factor_to_df_logical    convert factor into a data.frame of logicals
fillMissingCombs        fill out missing combinations of factors with
                        NA
filter_better           filter data with diagnostics
flattenList             flatten a list
getDropped              get items or numerics that would be dropped in
                        a merge
getNAFields             get NA field names from data frame
get_factor_fields       get names of the factor fields in a data frame
get_numeric_char_field_names
                        Find columns which are numeric
invwhich                inverse which
is.Date                 is the object a 'Date'
isFlat                  determine whether a list is nested
isValidTime             check if a time is valid in 24h clock
jw_df_basics            minimal basic pre-processing metrics
jwutil-package          Tools for testing and data manipulation not
                        found elsewhere
listTrim                trim null or empty values from a list
listTrimFlat            trim null or empty values from a list
logical_to_binary       Encode TRUE as 1, and FALSE as 0 (integers)
ls.objects              Summarize objects
lsf                     list all functions in a package
lsos                    show largest objects
lsp                     list all items in a package
mergeLists              merge lists by names
merge_better            Merge better
min_r_version           Find minimum R version required for package
numbers_to_long_and_float
                        convert numbers to long and float types
opt_binary_brute        optimizes a function for all combinations of
                        all subsets
permute                 generate all permutations of input
permuteWithRepeats      generate all permutations of input, reusing
                        values in each result row
platformIsLinux         Are we running on Linux, Mac or Windows?
propIsNa                Proportion of NA values in a vector
propNaPerField          return proportion of NA values per field
propRowSorted           proportion of non-descending rows in matrix
random_test_dates       generate random Dates or POSIXlt test datetimes
random_test_numbers     create extreme random numbers
read_xlsx_linux         read '.xlsx' file, interpret as CSV, and return
                        a data frame
read_zip_url            read file from zip at URL
reqinst                 Load packages with 'library', installing any
                        which are missing
rm_r                    recursive remove
save_in_data_dir        Save given variable in package data directory
set_attr_in_place       Set attribute on any SEXP in place
shuffle                 shuffle
source_purl             Extract code from knitr vignette and source it
strMultiMatch           return the actual matches from a bracketed
                        regex
strip                   strip all whitespace
stripForFormula         strip a string so that it can be used as a
                        variable name in a formula.
trim                    strip whitespace from ends of each string in
                        given character vector
unzip_single            unzip a single file from URL
unzip_to_data_raw       Unzip file to 'data-raw'
update_github_pkgs      Update github_install packages
zero_na                 Zero NA values in a data.frame
zeroes                  zeroes
