struct-type | Restricted structs for JavaScript | Transpiler library

Is there a way to define alongside a (typed) structure a contract for the entire structure in Typed Racket? In my particular case, I have a structure that takes two lists as fields, and I want to require the lists to be the same length.

I've looked at:

• make-struct-type, which allows specification of a "guard" that moderates constructor calls. I could pass a procedure that raises an exception if the lengths don't match, but I don't know what to do with the values returned by make-struct-type.
• struct/c and the struct form of contract-out, both of which produce structure contracts from contracts on individual fields. This seems unhelpful here.

Ideally I would like to bind the contract to the structure immediately (as in define/contract), but I'm open to adding the contract when I provide the type's procedures. However, I currently provide the recognizer and accessor procedures individually rather than using struct-out (so that I can exclude or rename individual procedures), and I'd like to keep that flexibility.

Right now I have something like this:

I am trying to copy a struct of type Big to type Small without explicitly creating a new struct of type Small with the same fields.

I have tried searching for other similar problems such as this and this yet all the conversions between different struct types happen only if the structs have the same fields.

Here is an example of what I tried to do:

According the docs:

You can't declare a ref struct as a member of a class or a normal struct.

But I managed to compile and run this:

I want to write a function that takes different struct-types as 1 parameter. Also, i have to get sure, that in these struct ist a Id field. so i want to have a function like this: MyFunction(object *struct{ Id int }

I have tried it with passing the struct to a *struct{ Id int } and to a interface{} parameter.

For example, i have these 2 struct-types:

I'm having a problem with my Go project where one route handles CSS fine and another route's CSS is broken. The CSS used to work on both pages, but now it isn't loading for /login.html.

I know that I'm properly stripping the prefix for the /static/ folder because it's working in once place and not another. I also directly copied and pasted the header code from the working page to the not-working page (being careful to use the correct css file).

Negroni is showing that the application is making the call to the correct location:

I have an issue where I've got a function that takes in an Iterator of a specific struct type, and I want to send in my Vector that contains this same struct-type as a parameter to the function.

I do not understand what I am doing wrong. I have tried several different things:

• Sending the vecName.iter() leaving me with this error: error[E0271]: type mismatch resolving <'_, code_test_lib::gfx::AsteroidDrawData> as std::iter::Iterator>::Item == code_test_lib::gfx::AsteroidDrawData
• Sending the vecName.into_iter() leaving me with this error: error[E0507]: cannot move out of borrowed content
• Sending the &vecName.iter() giving me this error: error[E0277]: &std::slice::Iter<'_, code_test_lib::gfx::AsteroidDrawData> is not an iterator
• Sending the &vecName.into_iter() giving me this: error[E0277]: &std::vec::IntoIter is not an iterator

I don't know how I can send the Vec to the function as an Iterator.

Seems that spanner support struct type. https://cloud.google.com/spanner/docs/data-types#struct-type

However, DDL didn't mention how to use. https://cloud.google.com/spanner/docs/data-definition-language#data_types

It's really confuse me, or I got misunderstood with the documents?

my question is, how to bind(auto binding?) custom structure type in a map object(variable)?

this is my custom struct type

Suppose you have a struct, like this: