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T_and_F_symbol_linter()
T and F symbol linter
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absolute_path_linter()
- Absolute path linter
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any_duplicated_linter()
- Require usage of
anyDuplicated(x) > 0 over any(duplicated(x))
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any_is_na_linter()
- Require usage of
anyNA(x) over any(is.na(x))
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assignment_linter()
- Assignment linter
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backport_linter()
- Backport linter
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boolean_arithmetic_linter()
- Require usage of boolean operators over equivalent arithmetic
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brace_linter()
- Brace linter
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class_equals_linter()
- Block comparison of class with
==
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commas_linter()
- Commas linter
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commented_code_linter()
- Commented code linter
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comparison_negation_linter()
- Block usages like !(x == y) where a direct relational operator is appropriate
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condition_call_linter()
- Recommend usage of
call. = FALSE in conditions
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condition_message_linter()
- Block usage of
paste() and paste0() with messaging functions using ...
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conjunct_test_linter()
- Force
&& conditions to be written separately where appropriate
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consecutive_assertion_linter()
- Force consecutive calls to assertions into just one when possible
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consecutive_mutate_linter()
- Require consecutive calls to mutate() to be combined when possible
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cyclocomp_linter()
- Cyclomatic complexity linter
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duplicate_argument_linter()
- Duplicate argument linter
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empty_assignment_linter()
- Block assignment of
{}
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equals_na_linter()
- Equality check with NA linter
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expect_comparison_linter()
- Require usage of
expect_gt(x, y) over expect_true(x > y) (and similar)
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expect_identical_linter()
- Require usage of
expect_identical(x, y) where appropriate
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expect_length_linter()
- Require usage of
expect_length(x, n) over expect_equal(length(x), n)
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expect_named_linter()
- Require usage of
expect_named(x, n) over expect_equal(names(x), n)
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expect_not_linter()
- Require usage of
expect_false(x) over expect_true(!x)
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expect_null_linter()
- Require usage of
expect_null for checking NULL
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expect_s3_class_linter()
- Require usage of
expect_s3_class()
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expect_s4_class_linter()
- Require usage of
expect_s4_class(x, k) over expect_true(is(x, k))
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expect_true_false_linter()
- Require usage of
expect_true(x) over expect_equal(x, TRUE)
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expect_type_linter()
- Require usage of
expect_type(x, type) over expect_equal(typeof(x), type)
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fixed_regex_linter()
- Require usage of
fixed=TRUE in regular expressions where appropriate
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for_loop_index_linter()
- Block usage of for loops directly overwriting the indexing variable
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function_argument_linter()
- Function argument linter
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function_left_parentheses_linter()
- Function left parentheses linter
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function_return_linter()
- Lint common mistakes/style issues cropping up from return statements
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if_not_else_linter()
- Block statements like if (!A) x else y
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if_switch_linter()
- Require usage of switch() over repeated if/else blocks
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ifelse_censor_linter()
- Block usage of
ifelse() where pmin() or pmax() is more appropriate
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implicit_assignment_linter()
- Avoid implicit assignment in function calls
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implicit_integer_linter()
- Implicit integer linter
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indentation_linter()
- Check that indentation is consistent
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infix_spaces_linter()
- Infix spaces linter
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inner_combine_linter()
- Require
c() to be applied before relatively expensive vectorized functions
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is_numeric_linter()
- Redirect
is.numeric(x) || is.integer(x) to just use is.numeric(x)
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keyword_quote_linter()
- Block unnecessary quoting in calls
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length_levels_linter()
- Require usage of nlevels over length(levels(.))
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length_test_linter()
- Check for a common mistake where length is applied in the wrong place
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lengths_linter()
- Require usage of
lengths() where possible
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library_call_linter()
- Library call linter
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line_length_linter()
- Line length linter
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list_comparison_linter()
- Block usage of comparison operators with known-list() functions like lapply
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literal_coercion_linter()
- Require usage of correctly-typed literals over literal coercions
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matrix_apply_linter()
- Require usage of
colSums(x) or rowSums(x) over apply(x, ., sum)
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missing_argument_linter()
- Missing argument linter
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missing_package_linter()
- Missing package linter
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namespace_linter()
- Namespace linter
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nested_ifelse_linter()
- Block usage of nested
ifelse() calls
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nested_pipe_linter()
- Block usage of pipes nested inside other calls
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nonportable_path_linter()
- Non-portable path linter
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nrow_subset_linter()
- Block usage of
nrow(subset(x, .))
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numeric_leading_zero_linter()
- Require usage of a leading zero in all fractional numerics
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nzchar_linter()
- Require usage of nzchar where appropriate
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object_length_linter()
- Object length linter
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object_name_linter()
- Object name linter
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object_overwrite_linter()
- Block assigning any variables whose name clashes with a
base R function
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object_usage_linter()
- Object usage linter
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one_call_pipe_linter()
- Block single-call magrittr pipes
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outer_negation_linter()
- Require usage of
!any(x) over all(!x), !all(x) over any(!x)
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package_hooks_linter()
- Package hooks linter
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paren_body_linter()
- Parenthesis before body linter
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paste_linter()
- Raise lints for several common poor usages of
paste()
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pipe_call_linter()
- Pipe call linter
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pipe_consistency_linter()
- Pipe consistency linter
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pipe_continuation_linter()
- Pipe continuation linter
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pipe_return_linter()
- Block usage of return() in magrittr pipelines
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print_linter()
- Block usage of print() for logging
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quotes_linter()
- Character string quote linter
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redundant_equals_linter()
- Block usage of
==, != on logical vectors
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redundant_ifelse_linter()
- Prevent
ifelse() from being used to produce TRUE/FALSE or 1/0
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regex_subset_linter()
- Require usage of direct methods for subsetting strings via regex
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rep_len_linter()
- Require usage of rep_len(x, n) over rep(x, length.out = n)
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repeat_linter()
- Repeat linter
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return_linter()
- Return linter
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routine_registration_linter()
- Identify unregistered native routines
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sample_int_linter()
- Require usage of sample.int(n, m, ...) over sample(1:n, m, ...)
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scalar_in_linter()
- Block usage like x %in% "a"
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semicolon_linter()
- Semicolon linter
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seq_linter()
- Sequence linter
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sort_linter()
- Check for common mistakes around sorting vectors
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spaces_inside_linter()
- Spaces inside linter
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spaces_left_parentheses_linter()
- Spaces before parentheses linter
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sprintf_linter()
- Require correct
sprintf() calls
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stopifnot_all_linter()
- Block usage of all() within stopifnot()
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string_boundary_linter()
- Require usage of
startsWith() and endsWith() over grepl()/substr() versions
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strings_as_factors_linter()
- Identify cases where
stringsAsFactors should be supplied explicitly
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system_file_linter()
- Block usage of
file.path() with system.file()
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terminal_close_linter()
- Prohibit close() from terminating a function definition
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todo_comment_linter()
- TODO comment linter
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trailing_blank_lines_linter()
- Trailing blank lines linter
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trailing_whitespace_linter()
- Trailing whitespace linter
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undesirable_function_linter()
- Undesirable function linter
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undesirable_operator_linter()
- Undesirable operator linter
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unnecessary_concatenation_linter()
- Unneeded concatenation linter
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unnecessary_lambda_linter()
- Block usage of anonymous functions in iteration functions when unnecessary
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unnecessary_nesting_linter()
- Block instances of unnecessary nesting
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unnecessary_placeholder_linter()
- Block usage of pipeline placeholders if unnecessary
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unreachable_code_linter()
- Block unreachable code and comments following return statements
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unused_import_linter()
- Check that imported packages are actually used
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vector_logic_linter()
- Enforce usage of scalar logical operators in conditional statements
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which_grepl_linter()
- Require usage of grep over which(grepl(.))
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whitespace_linter()
- Whitespace linter
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yoda_test_linter()
- Block obvious "yoda tests"
Common default configurations