Macro assert_cfg::all

macro_rules! all {
    ($($args:tt)*) => { ... };
}

Asserts that all of the passed-in features are enabled.

Example

This example demonstrates the error message when not enough features are enabled.

assert_cfg::all!{
    any(feature = "foo", feature = "bar"),
    feature = "qux",
}

When only the "foo" feature is enabled, the above code produces this compile-time error:

error[E0080]: evaluation of constant value failed
 --> src/assert_all.rs:20:1
  |
4 | / assert_cfg::all!{
5 | |     any(feature = "foo", feature = "bar"),
6 | |     feature = "qux",
7 | | }
  | |_^ the evaluated program panicked at '
too few features are enabled, these need to be enabled:
- `feature = "qux"`
', src/assert_all.rs:4:1
  |