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Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0054.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0054.md | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0054.md b/compiler/rustc_error_codes/src/error_codes/E0054.md new file mode 100644 index 000000000..c3eb375fb --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0054.md @@ -0,0 +1,20 @@ +It is not allowed to cast to a bool. + +Erroneous code example: + +```compile_fail,E0054 +let x = 5; + +// Not allowed, won't compile +let x_is_nonzero = x as bool; +``` + +If you are trying to cast a numeric type to a bool, you can compare it with +zero instead: + +``` +let x = 5; + +// Ok +let x_is_nonzero = x != 0; +``` |