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Echo

View this sample's code on GitHub

Overview​

This example demonstrates a simple echo effect, where an application sends back the data it receives.

This is a Motoko example that does not currently have a Rust variant.

Prerequisites​

This example requires an installation of:

  • Install the BIG SDK.
  • Clone the example dapp project: git clone https://github.com/dfinity/examples

Begin by opening a terminal window.

Step 1: Navigate into the folder containing the project's files and start a local instance of the replica with the command:​

cd examples/motoko/echo
dfx start --background

Step 2: Deploy the canisters Map and Test:​

dfx deploy

Step 3: Invoke the say method:​

dfx canister call echo say '("This is a test.")'

The following output will be returned: 

("This is a test.")