Greg questions

• How can adhoc commands be run on sets of hosts? (e.g. hosts in group 1 AND group 2, hosts in group 1 and NOT group 2, etc)
• How to implement a trait for a vector of generic type Vec<T>?
• How to override a React component's CSS using emotion CSS?
• How to create a command line prompt that displays options next to integers and allows choosing an option using integer input?
• How to deal with inexact floating point arithmetic results in Rust? [closed]
• How to include libraries hosted on Github in a C++ project? (New C++ user - previously used language with package manager) [closed]
• How to send a ZMQ message using a reference?
• How to automate application deployment when using LXD containers?
• How to append to an existing CSV file?
• How to compile a whole Python library (including dependencies) so that it can be used in C?

Greg answers