| %notin% | Negated Value Matching | 
| %or% | Or | 
| add_suffix_to_vars | Add a Suffix to Variables in a List of Expressions | 
| anti_join | Join Functions | 
| arg_name | Extract Argument Name from an Expression | 
| assert_atomic_vector | Is an Argument an Atomic Vector? | 
| assert_character_scalar | Is an Argument a Character Scalar (String)? | 
| assert_character_vector | Is an Argument a Character Vector? | 
| assert_data_frame | Is an Argument a Data Frame? | 
| assert_date_var | Is a Variable in a Dataset a Date or Datetime Variable? | 
| assert_date_vector | Is an object a date or datetime vector? | 
| assert_expr | Assert Argument is an Expression | 
| assert_expr_list | Is an Argument a List of Expressions? | 
| assert_filter_cond | Is an Argument a Filter Condition? | 
| assert_function | Is Argument a Function? | 
| assert_integer_scalar | Is an Argument an Integer Scalar? | 
| assert_list_element | Is an Element of a List of Lists/Classes Fulfilling a Condition? | 
| assert_list_of | Is an Argument a List of Objects of a Specific S3 Class or Type? | 
| assert_logical_scalar | Is an Argument a Logical Scalar (Boolean)? | 
| assert_named | Assert Argument is a Named List or Vector | 
| assert_numeric_vector | Is an Argument a Numeric Vector? | 
| assert_one_to_one | Is There a One to One Mapping between Variables? | 
| assert_param_does_not_exist | Asserts That a Parameter Does Not Exist in the Dataset | 
| assert_s3_class | Is an Argument an Object of a Specific S3 Class? | 
| assert_same_type | Are All Arguments of the Same Type? | 
| assert_symbol | Is an Argument a Symbol? | 
| assert_unit | Asserts That a Parameter is Provided in the Expected Unit | 
| assert_vars | Is an Argument a List of Variables? | 
| assert_varval_list | Is an Argument a Variable-Value List? | 
| backquote | Wrap a String in Backquotes | 
| capture_output | Capture Output and Messages | 
| contains_vars | check that argument contains valid variable(s) created with 'exprs()' or Source Variables from a List of Expressions | 
| convert_dtm_to_dtc | Helper Function to Convert Date (or Date-time) Objects to Characters of dtc Format (-DTC type of variable) | 
| dataset_vignette | Output a Dataset in a Vignette in the admiral Format | 
| deprecate_inform | Deprecation with Soft Message | 
| dquote | Wrap a String in Double Quotes | 
| enumerate | Enumerate Multiple Elements | 
| expect_dfs_equal | Expectation: Are Two Datasets Equal? | 
| expr_c | Concatenate One or More Expressions | 
| extract_vars | Extract All Symbols from a List of Expressions | 
| filter_if | Optional Filter | 
| friendly_type_of | Return English-friendly messaging for object-types | 
| get_constant_vars | Get Constant Variables | 
| get_dataset | Retrieve a Dataset from the 'admiraldev_environment' environment | 
| get_duplicates | Get Duplicates From a Vector | 
| get_new_tmp_var | Get a New Temporary Variable Name for a Dataset | 
| get_source_vars | Get Source Variables from a List of Expressions | 
| inner_join | Join Functions | 
| is_auto | Checks if the argument equals the auto keyword | 
| is_order_vars | Is order vars? | 
| is_valid_dtc | Is this string a valid DTC | 
| left_join | Join Functions | 
| parse_code | Parse Code | 
| process_set_values_to | Process 'set_values_to' Argument | 
| rdx_roclet | Roclet Extending the Standard rd Roclet | 
| remove_tmp_vars | Remove All Temporary Variables Created Within the Current Function Environment | 
| replace_symbol_in_expr | Replace Symbols in an Expression | 
| replace_values_by_names | Replace Expression Value with Name | 
| squote | Wrap a String in Single Quotes | 
| suppress_warning | Suppress Specific Warnings | 
| valid_time_units | Valid Time Units | 
| vars2chr | Turn a List of Expressions into a Character Vector | 
| warn_if_incomplete_dtc | Warn if incomplete dtc | 
| warn_if_inconsistent_list | Warn If Two Lists are Inconsistent | 
| warn_if_invalid_dtc | Warn If a Vector Contains Unknown Datetime Format | 
| warn_if_vars_exist | Warn If a Variable Already Exists | 
| what_is_it | What Kind of Object is This? |