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Text description (for those with screenreaders):
A portion of a prime number checker written in the Rust programming language, where the first few lines are written correctly including the first if statement in the program. However, the following if statements are written using Python syntax instead of Rust, as the author slipped back into his native tongue.
vim can have IDE-like capabilities thanks to lsp and tree-sitter. That's a real game changer and is quite easy to set-up with something like kickstart.nvim.
I actually use Vim to write all my code, but without IDE-ifying it, just syntax highlighting and some navigation tweaks (with Sublime3 for help with bulk edits). For most of my stuff an IDE is overkill.