问题描述
如何在 Zig 中实现经典的 try-catch
错误处理?
例如。如何解决这个错误,只在没有错误发生时才执行append
?
var stmt = self.statement() catch {
self.synchronize(); // Only execute this when there is an error.
};
self.top_level.statements.append(stmt); // HELP? This should only be executed when no error
// ...
fn synchronize() void {
// ...implementation
}
fn statement() SomeError!void {
// ...implementation
}
解决方法
尝试一个 if-else,如下:
if (self.statement()) |stmt| {
// HELP? This should only be executed when no error
self.top_level.statements.append(stmt)
} else |error| {
// Only execute this when there is an error.
self.synchronize()
}
您可以了解更多关于如果 in the zig documentation