Macro cosmwasm_std::ensure_ne

macro_rules! ensure_ne {
    ($a:expr, $b:expr, $e:expr) => { ... };
}

Quick check for a guard. Like assert_ne!, but rather than panic, it returns the third argument x wrapped in Err(x).

use cosmwasm_std::ensure_ne;

ensure_ne!(voting_power, 0, ContractError::NotAVoter {});

// is the same as

if voting_power != 0 {
  return Err(ContractError::NotAVoter {});
}