the joy(!) of perl: or and || are the same operator but have different precedence.
miniblog.
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Excellent collection of advice for building CLI apps in Rust. It's really helpful to see opinions on e.g. should env vars take precedence over CLI arguments.
https://rust-cli-recommendations.sunshowers.io/
Prettier 1.13 has had a ton of polish, but this feature really caught my eye: it explicitly adds parentheses to arithmetic operations, to avoid confusion regarding precedence!
Interesting talk on Fortress: https://www.youtube.com/watch?v=EZD3Scuv02g The parser rejects whitespace that doesn't match precedence!
