Macro ckb_std::debug

macro_rules! debug {
    ($fmt:literal) => { ... };
    ($fmt:literal, $($args:expr),+) => { ... };
}

debug macro

Output a debug message.

This macro only compiled under debug build and does nothing in release build. To debug the release build, append the --cfg debug_assertions arguments to cargo build. For users of Capsule, the debug macro can be enabled in the release build by running capsule build --release --debug-output.

Notice: to see the debug output, you must turn on ckb_script debugging log in the CKB node configuration like this:

[logger]
filter = "info,ckb-script=debug"

See the essay on more Tips for Debugging CKB Scripts.

Example

debug!("hello world");
debug!("there is a universal error caused by {}", 42);