For example, if I'm printing an interface by calling print(), and then, It will call printiface(), I'm wondering what does go actually between these two statements.
From what I could gather, print calls turn into printstring, printiface, etc. at compile time. If you want to look at how print code is generated, you could be interested in this code in src/cmd/gc/walk.c.
That method printiface() is mainly called by ifaceI2T(), ifaceI2I(), ifaceeq(), printinter().
So you can see more in runtime/iface.c
Related
If I am reusing the same code in multiple places/functions in the same file, should I put the same comments over and over or just once? Does the protocol/standard coding practice for comments change with each language?
Mu. You shouldn't be repeating code like that at all. Refactor it into a function so you only need to write it once.
Does the protocol/standard coding practice for comments change with each language?
Not really, I have programmed in multiple languages and my comment-mentality hasn't changed.
If I am reusing the same code in multiple places/functions in the same file, should I put the same comments over and over or just once?
should I have comments explaining what is happening each time each function opens the file or closes the file for that matter?
You should only comment out what isn't explicit in your code. If in your code, you repeat the same block of code in multiple places, then this isn't good practice and you should use functions(as #Joseph Sible-Reinstate Monica said) to put your repeated code in statement blocks, to then reuse it by calling the function. Also if you are repeating the code of one function in another, remember that you can call a function from inside the other function to avoid code duplication. So if you do the latter then you can just comment what the main function does and when a user see's that function for instance in another function, he can go back in your code and check the comment for the original function.
Also, are there aspects of the code that should or shouldn't be commented according to standard practice?
Again only comment what is not explicit in your code, if you have a function for instance that just displays a text, then that won't need a comment, but if at the contrary your code uses external dependencies or your own classes then a good practice would be to comment what is their role in your code; essentially explaining how your code utilizes these resources.
I have written a Fortran code for being compiled as a '*.DLL' file.
The program which reads that file is a Finite Elements Method software named Plaxis, I already achieved to generate the '*.DLL' file in Visual Studio and Plaxis recognizes my model but the model does not work fine.
I would like to evaluate all the variables involved in my code and the procedure that Plaxis is using to read them, but when I use commands like "write(*,*) 'variable'" Plaxis does not show me what I asked in the source code.
Probably you want to open a file and write to that for debug logging, because presumably Plaxis doesn't run with standard output connected to anything useful. Or maybe it would if you just ran Plaxis from a command line window?
It's not going to create a dialog box for you.
But anyway, another option would might be attach to Plaxis with a debugger, and set a breakpoint in a function in your DLL. Then you can single-step your code as called by Plaxis.
Or you can write your own test callers and write unit tests for your functions, making them easy to debug. This could work well if your function just gets an array + size as args.
If instead it passes some wrapped object that you need to call special functions to deal with, then maybe make another version of your function that does just take an array so you can call it from a simple test caller.
This is a follow-up to this Dart question.
Since Flutter doesn't support reflection and we can't use mirrors, how would you go about debugging, let's say an instance of firebase_database DatabaseReference ?
I'm trying to write tests, and knowing what key/values my reference contains will make it easier for me to write a proper test.
since Dart 3.12 you can use inspect(object) to achieve this
If you expect to have a built-in easy solution, then sorry : You can't.
BUT you can use plugins to serialize your own code, such as built_value. And print the serialized object.
On the other hand, if you want to print external code (DatabaseReference for instance), you'll have to manually transform that object in a combination of Map, List, and int/String/double.
Given that my Ada builder use a function ada_action which is registered by
static_obj.action(suffix, Action(ada_action, print_action_string)
which currently calls env.Execute() and further
def print_action_string(target, source, env):
print env.subst(env["ADACOMSTR"], target=target, source=source)
How can I control the verbosity levels so that if env["ADACOMSTR"] is defined it should only call print_action_string and inhibit echoing of the shell command currently done by env.Execute()?
You normally don't need to use Execute() in a builder action. Perhaps if you share that bit of code it might help. You could also look into using a generator, depending on what exactly you're looking for.
I am trying to write a Ruby script in one file.
I would like to know if it is possible to write the "main" function in the beginning, having the other functions that are used by main, defined after it. In other words, I would like to call a not yet defined function, so that they do not depends on definition order. Just changing the order is not possible because it gives an "undefined method" error. In C/C++ we use forward declarations... is there something similar in Ruby or another solution to this?
You just need the functions you call to be defined when your main function runs, not when it's defined. So, the easiest solution is to write the main function at the script's beginning, but call it at the end.
def main
foo(42)
bar(24)
end
# definitions of foo and bar
main