Linters highlighting code efficiency problems, such as unnecessary function calls.
The following linters are tagged with 'efficiency':
any_duplicated_linter
any_is_na_linter
boolean_arithmetic_linter
fixed_regex_linter
ifelse_censor_linter
inner_combine_linter
length_test_linter
lengths_linter
literal_coercion_linter
matrix_apply_linter
nested_ifelse_linter
outer_negation_linter
redundant_equals_linter
redundant_ifelse_linter
regex_subset_linter
routine_registration_linter
scalar_in_linter
seq_linter
sort_linter
string_boundary_linter
undesirable_function_linter
undesirable_operator_linter
unnecessary_concatenation_linter
unnecessary_lambda_linter
vector_logic_linter
linters for a complete list of linters available in lintr.