![]() ![]() Using this ability, they can function as escrow accounts. Smart contracts also have the ability to generate both asset and payment transactions within the logic. Smart contracts can read and write global storage for the contract and local storage for accounts that opt-in to the contract. TEAL also allows arguments to be passed into the program from a transaction, a scratch space to temporarily store values for use later in the program, access to grouped or single transaction properties, global values, a couple of pseudo operators, constants and flow control functions like bnz for branching and callsub for calling subroutines. TEAL provides a set of operators that operate on the values within the stack. These stack values are either unsigned 64 bit integers or byte strings. TEAL programs are processed one line at a time pushing and popping values on and off the stack. The language is a Turing-complete language that supports looping and subroutines, but limits the amount of time the contract has to execute using a dynamic opcode cost evaluation algorithm. ![]() TEAL is an assembly-like language and is processed by the Algorand Virtual Machine (AVM). These contracts can be written directly or with Python using the PyTeal library. Smart contracts and smart signatures are written in Transaction Execution Approval Language (TEAL). ![]() How To Build An Algorand Light Client - With State Proofs The Algorand Virtual Machine (AVM) and TEAL. ![]()
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