Events

EVM

event TokenDeployed(address indexed addy);

emit TokenDeployed(addy);

Solana

Regular Emit (Can be dropped from log truncation)

#[event]
pub struct TokenDeployed {
  mint: Pubkey,
}

emit!(TokenDeployed {
  mint: ctx.accounts.mint.key(),
})

CPI Emit (Event logged as a self CPI instruction, does not get dropped)

You first need to turn on the event-cpi feature in Cargo.toml ,

[dependencies]
anchor-lang = { version = "0.31.1", features = ["event-cpi"] }

then

#[event_cpi]
pub struct TokenDeployed {
  mint: Pubkey,
}

emit_cpi!(TokenDeployed {
  mint: ctx.accounts.mint.key(),
})