Awesome

StarkWare Cairo lang practice

Setup

Ref: Cairo doc - Setting up the environment

• install python3.7 (using virtual env or not)
• install prerequesite libraries: sudo apt install -y libgmp3-dev(ubuntu) or brew install gmp(mac)
• install python packages: pip3 install ecdsa fastecdsa sympy
  • NOTE: Cairo was tested with python3.7. To make it work with python3.6, you will have to install contextvars: pip3 install contextvars
• download Cairo python package and install via pip3 install cairo-lang-0.2.0.zip

Compile and run

1. StarkNet contracts

• create a cairo file test.cairo
• compile: starknet-compile test.cairo --output test_compiled.json --abi test_compiled_abi.json
• deploy the contract: starknet deploy --contract test_compiled.json --network alpha
• query tx status: starknet tx_status --id XXXXX --network alpha
• query storage in contract: starknet call --address 0xabcdef...... --abi test_compiled_abi.json --function get_XXX
• invoke the contract: starknet invoke --address 0xabcdef...... --abi test_compiled_abi.json --function do_XXX --inputs A B C --network alpha

2. Cairo

• create a cairo file test.cairo
• compile: cairo-compile test.cairo --output test_compiled.json
• run the program: cairo-run --program test_compiled.json --print_output --print_info --relocate_prints
  • tracer can be enabled by adding --tracer flag to cairo_run, after tracer is enabled, open http://localhost:8100/ in browser