vivian's essential utilities

Some nifty utilities to make some mostly-already-easy tasks easier.

Read the docs for all the methods.

Installation

The minimum supported version is Rust 1.41.0.

Cargo.toml:

toml [dependencies] vivian-essentials = "0.1"

Guard against something that should be true, returning an error if it's not:

rust essentials::guard(some_condition())?;

This is useful for ? heavy code, and is especially useful with crates like snafu:

```rust use crate::error::UserNotVerified; use snafu::ResultExt;

essentials::guard(user.is_verified()).context(UserNotVerified)? ```

Prompt a user for something with a message:

rust let email = essentials::prompt("What is your email address?\n> ")?;

If you miss ternaries, then this is one of the closest ways you can get without using a macro:

rust let discount = essentials::tern(age > 65, Discount::Senior, Discount::Regular);

ISC.