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Diffstat (limited to 'doc/langref.md')
| -rw-r--r-- | doc/langref.md | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/doc/langref.md b/doc/langref.md index b8a6a5775a..0aace75996 100644 --- a/doc/langref.md +++ b/doc/langref.md @@ -639,10 +639,23 @@ const b: u8 = @truncate(u8, a); ### @compileError(comptime msg: []u8) -This function, when semantically analyzed, causes a compile error with the message `msg`. +This function, when semantically analyzed, causes a compile error with the +message `msg`. -There are several ways that code avoids being semantically checked, such as using `if` -or `switch` with compile time constants, and comptime functions. +There are several ways that code avoids being semantically checked, such as +using `if` or `switch` with compile time constants, and comptime functions. + +### @compileLog(args: ...) + +This function, when semantically analyzed, causes a compile error, but it does +not prevent compile-time code from continuing to run, and it otherwise does not +interfere with analysis. + +Each of the arguments will be serialized to a printable debug value and output +to stderr, and then a newline at the end. + +This function can be used to do "printf debugging" on compile-time executing +code. ### @intType(comptime is_signed: bool, comptime bit_count: u8) -> type |