rust-clippy

A collection of lints that give helpful tips to newbies and catch oversights.

Lints included in this crate:

• single_match: Warns when a match statement with a single nontrivial arm (i.e, where the other arm is _ => {}) is used, and recommends if let instead.
• box_vec: Warns on usage of Box<Vec<T>>
• dlist: Warns on usage of DList
• str_to_string: Warns on usage of str::to_string()
• toplevel_ref_arg: Warns when a function argument is declared ref (i.e. fn foo(ref x: u8), but not fn foo((ref x, ref y): (u8, u8)))
• eq_op: Warns on equal operands on both sides of a comparison or bitwise combination
• bad_bit_mask: Denies expressions of the form _ & mask == select that will only ever return true or false (because in the example select containing bits that mask doesn't have)
• needless_bool : Warns on if-statements with plain booleans in the then- and else-clause, e.g. if p { true } else { false }
• ptr_arg: Warns on fn arguments of the type &Vec<...> or &String, suggesting to use &[...] or &str instead, respectively
• approx_constant: Warns if the approximate of a known float constant (in std::f64::consts or std::f32::consts) is found and suggests to use the constant

In your code, you may add #![plugin(clippy)] to use it (you may also need to include a #![feature(plugin)] line)

You can allow/warn/deny the whole set using the clippy lint group (#[allow(clippy)], etc)

More to come, please file an issue if you have ideas!

Licensed under MPL. If you're having issues with the license, let me know and I'll try to change it to something more permissive.