my_favorite_opcodes.md

my favorite opcodes

opocde	name	min gas	details
20	SAH3	30	keccak-256 hash of the given data in memory
31	BALANCE	100	balance of a given 20-byte address in wei
33	CALLER	33	the 20-byte address of the last caller account (except delegate call)
3A	GASPRICE	2	gas price in wei per gas
40	BLOCKHASH	20	hash of the chosen block, or 0 if the block is not the valid range
☠️44🪦	DIFFICULT	😵	current block difficulty
45	GASLIIT	2	get gas limit
48	BASEFEE	2	get base fee in wei
5A	GAS	2	remaining gas after instructions
F0	CREATE2	32000	create a new contract - the new account's code is set to the return data resulting from executing the inialisation code - the destination address is calculated as initialisation_code = memory[offset:offset+size] and address = keccak256(0xff + sender_address + salt + keccak256(initialisation_code))[12:]
F1	CALL	100	create a new sub context and execute the code of the given account, then resumes the current one
F2	CALLCODE	100	create a new sub context and execute the code of the given account - the storage remains the same
F4	✨DELEGATECALL✨	100	create a new sub context and execute the code of the given account - the storage, the current sender, and the current value remain the same
FA	STATICCALL	100	create a new sub context and execute the code of the given account, then resumes the current one - equivalent to CALL, except that it does not allow any state modifying instructions or sending ETH in the sub context
FF	SELFDESTRUCT	5000	the new account is registered to be destroyed at the end of the current transaction