What you are doing is undefined behavior. The compiler is allowed to assume that you will never use more than sizeof int64_t for the variable member int64_t c. So if you try to write more than sizeof int64_t(aka sizeof c) on c, you will have an out-of-bounds problem in your code. This is the case … Read more
With the first you can use either the type-alias COMPLEX or struct complex. With the second you have an anonymous structure which can only be used with the type-alias COMPLEX. With that said, in C++ any structure name is also a type-name and can be used as a type directly: struct complex { … }; … Read more
You can do it like so: static struct PipeShm * myPipe = &(struct PipeShm) { .init = 0, /* … */ }; This feature is called a “compound literal” and it should work for you since you’re already using C99 designated initializers. Regarding the storage of compound literals: 6.5.2.5-5 If the compound literal occurs outside … Read more
Oh my goodness! I just figured it out. There is no space allowed between json: and the field name “name”. The “go vet” error message (“bad syntax”) is remarkably unhelpful. The following code works. Can you see the difference? package main import ( “encoding/json” “fmt” ) type Person struct { Name string `json:”name”` Age int … Read more
The error explains what the problem is – you have a constant being assigned in a context that’s too dynamic – i.e. inside the index method. The solution is to define it outside: DashItem = Struct.new(:name, :amount, :moderated) def index @dashboard_items = [] …
Why not? Classes are fine for that. If you want to save some memory, you might also want to use __slots__ so the objects don’t have a __dict__. See http://docs.python.org/reference/datamodel.html#slots for details and Usage of __slots__? for some useful information. For example, a class holding only two values (a and b) could looks like this: … Read more
The solution here seems to be that the library I’m trying to use needs to be reworked to prevent this kind of thing from happening. The two possible ways to change the library seem to be 1) not vendor at all – this works if the dependency does not need to be a specific version. … Read more
To the best of my knowledge there isn’t, but as you stated it isn’t something hard to implement yourself so I suggest you do that. You may be tempted to use Tuple class as others suggested. While it can do the job it isn’t something you’ll want to reuse over and over. Furthermore you may … Read more
It isn’t possible to dynamically define a struct that is identical to a compile-time struct. It is possible, but difficult, to create dynamic structures that can contain the information equivalent to a struct. The access to the data is less convenient than what is available at compile-time. All else apart, you cannot access a member … Read more
Use json.RawMessage to “delay” the unmarshaling process to determine the raw byte before deciding to do something: var data = []byte(`{ “somefield1″:”somevalue1”, “somefield2”: null }`) type Data struct { SomeField1 string SomeField2 json.RawMessage } func main() { d := &Data{} _ = json.Unmarshal(data, &d) fmt.Println(d.SomeField1) if len(d.SomeField2) > 0 { if string(d.SomeField2) == “null” { … Read more