I have recently edited a fellow student's data collection software to my specifications. The program works fine when I run within Visual Basic 6, however ideally I would like to compile the program into an .exe file so I can run it from any PC. However, when I select the option to turn it into an exe, I get the following error while its compiling:
Compile Error: Sub or Function not defined.
I was curious why my program will run from within Visual Basic, but can't compile into an exe. Any fixes/suggestions would be greatly appreciated!
You must just be running the app in the IDE by using Start (F5) - this does not do a full compile so won't catch all compile errors. I suggest you always use Start With Full Compile (Ctrl+F5) - then it will show you where the errors are.
You can create a custom control bar button to do the Start With Full Compile - saves typing CTRL+F5 all the time.
at the begining of every file, write "option explicit". This changes vb behavior from weak typed to strong typed.
What this means is that when you put a string into an integer, then the vb will tell you right away, or at least when you press "run". In a weak typed mode, the program will run until it encounters a fault, like "Sub or Function not defined" then crash.
When you compile into an "exe", vb needs to do extra sanity checks much like "option explicit" would do. This is why you don't see the problem while normal execution. It is still there, lurking, but you probably don't execute the problematic line.
It is very important that you use this keyword in every vb source file you have, otherwise you'll see problems like this all the time.
It allows you to run the program even though it won't compile due to the Compile On Demand feature the IDE supports. As noted in other posts you can CTRL-F5 to do a full compile, or you can go into Options --> General and turn off Compile On Demand...(saves a lot of CTRL-F5s)
Related
As far as I know, the compiler compiles the code by converting it to a language that a computer can understand which is the machine language and this is done before running the code.
So, does the compiler compile my code each time I write a character in the file?
And if so, does it check the whole code? Or just the line that updated.
An important part to this question is the type of programming language(PL) we are talking about. Generally speaking, I would categorize PL into 3 groups:
Traditional PLs. Ex: C, C++, Rust
The compiler compiles the code into machine language when you hit the "build" button or the "run" button.
It doesn't compile every time you change the code, but a code linter does continuously observe your code and check it for errors.
Another note, when you change part of the code and compile it, the compiler doesn't recompile everything. It usually only recompile the current assembly file (or module or whatever you call them).
It is also important to note that a lot of modern IDEs, compile when you save the files.
There is also the hot reload feature. It is a smart compiler feature that can swap certain parts of the code while it is running.
Interpreted PLs Ex: python, JS and PHP
Those languages never get compiled; Rather, they get interpreted or translated into native code on the fly and in-memory when you run them.
Those languages usually employee a cache to accelerate the subsequent code execution.
Intermediary Code PL. Ex: Kotlin, java, C#
Have 2 stages of compilation:
Build time compilation.
Just in time (run-time) compilation.
Build time compilation converts the code into intermediary language (IL) machine code, which is special to the run-time.
This code only understood by the run time like Java runtime or dot net runtime
The second compilation happens when the programs get installed or ran for the first time. This is called just in time compilation (JIT)
The run-time convert the code into native code specific to the run-time OS.
I am getting some mysterious compiler type related errors in my ts code. I have another thread addressing them.
But I know there will be no adverse reactions to my code, so I would like to force it to compile and make my js files anyway so I can do some run-time debugging.
I have seen a comment or two about the project compiling despite some build errors. How do I do that? If I use the command line compiler it seems to do this, but apparently I am spoiled VS programmer who wants a to build in one step, not two.
I have VS2013 and TS 1.5.
Thanks, Brad
How do I do that? If I use the command line compiler it seems to do this, but apparently I am spoiled VS programmer who wants a to build in one step, not two.
Make sure that in your csproj you have noEmitOnError set to false.
My intetion is to debug the called cobol program aswel.
But not sure how to keep a break point to go inside the called cobol program.
At the moment i am able to debugg the main cobol program and control just goes over the called copbol program.Thanks
Considering that it is Cobol on a Mainframe and that you already accessed the debugger, I guess the issue is with the compilation of the called program.
Usually, programs that are called by a program in debugger are jumped over (they run, but you can't see code or control them) if you forget to compile the called program with debugger option.
The same way you compiled your program with DEBUG option, you can compile the called program. This usually is done with a 'D' option at the compilation screen.
Let me know if this works.
Are you building the called subprogram in the same RD/z project? That can make a difference. Otherwise, you will need to use the mainframe side of things to point your debug info back at your workstaions IP address either via the LE TEST() parameter on the parm string or by linking in a custom CEEINIT to specify those parms.
Is there a way to tell pyCharm that it should skip framework code? The debugger should skip all lines which are not from me.
In my case it is very easy to tell which code I want to debug and which not:
Code in virtualenv lib should be skipped
Code in virtualenv src should be debugged.
If I press F7 (Step Into) it should skip all lines which are not from my code base.
[Update May 2015: introduced in PyCharm 4.5]
There are two new features now, one of which is the one you asked for, but I mention the other one as well because it is topically very close.
From the 4.5 release notes:
Step into My Code
Stay focused on your code by telling the debugger to step only through your project code, as opposed to stepping through the library sources.
[...]
Ignore Library Files
The debugger is improved with the new 'Ignore library files' option. Use it to have the debugger stop inside your code in case the exception is raised in a library module, instead of stopping inside the library code.
[Update after learning about blackboxing libraries in debugging]
In this answer it is mentioned that you can add the modules to ignore into "the dict DONT_TRACE in /helpers/pydev/pydevd.py"
And there is an open issue on the issue tracker.
[original answer]
It is not possible to skip code like that, but you can flexibly switch between walking through the code line by line and making bigger jumps in a running debug session by simply adding another breakpoint (while debugging - break points can be changed in a running debug session) at the position after the library code you want to skip and press 'Resume Program' in the Debugger. The library code is skipped and you are back in your code.
You might also want to use conditional breakpoints to make sure that the program breaks into the debugger exactly when the program is in the state that you desire: right click on a breakpoint and enter a condition that has to evaluate to True in the context of that line.
We know that the compiler is responsible for identifying syntax errors (with the linker). Logically, the compilation phase starts when we run the program by pressing run button or F7. However, we notice the recent versions of visual studio, the compiler can identify some errors (e.g. underlines undefined functions in red) before even we run to test the code. My question is how does that happen? does the compiler operate in the background during the editing phase?
Microsoft's Intellisense uses a tool called the EDG C++ Front End, which is basically the first half of the Edison Design Group C++ Compiler. EDG's program is pretty famous in the compiler world for understanding unfinished source code -- things like "you forgot a semicolon" and "that line is bad, but I can get back in sync for the next line." But it is a different compiler technology than Visual C++ (as a compiler, it's not as good), so occasionally you will get a warning in Intellisense about code that is totally fine when you press F7 ("Compile").