[−][src]Macro claim::assert_some
Asserts that expression returns Some(T)
variant.
Uses
Assertions are always checked in both debug and release builds, and cannot be disabled.
See debug_assert_some!
for assertions that are not enabled in release builds by default.
Custom messages
This macro has a second form, where a custom panic message can be provided
with or without arguments for formatting. See std::fmt
for syntax for this form.
Examples
let maybe = Some(42); assert_some!(maybe); // With custom messages assert_some!(maybe, "Found it at {:?}", maybe);
None
variant will cause panic:
let maybe = None; assert_some!(maybe); // Will panic