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When to use extern in C++
...n 2 files include the same header file, it won't link (linker will emit an error about "duplicate symbol")
– kuba
May 2 '12 at 21:44
67
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HTTP status code for a partial successful request
...nsfer Protocol deals with the transmission side of things. It doesn't have error codes to deal with application level errors.
Returning 200 is the right thing to do here. As far as HTTP is concerned the request was received properly, handled properly and you're sending the response back. So, on th...
How to create an empty file at the command line in Windows?
...one I use is basically the one by Nomad:
.>out.txt
It does give an error:
'.' is not recognized as an internal or external command
But this error is on stderr. And > only redirects stdout, where nothing have been produced.
Hence the creation of an empty file. The error message can be ...
A non well formed numeric value encountered
...o a DB. I am having problems validating this. I keep getting the following errors
9 Answers
...
Proper way to handle multiple forms on one page in Django
... @meteorainer if you use number one, is there a way to pass the errors back to the forms in the parent view that instantiates these, without using either the messages framework or query strings? This answer seems the closest, but here it's still just one view handling both forms: stackove...
Index (zero based) must be greater than or equal to zero
Hey I keep getting an error:
8 Answers
8
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How do you determine the size of a file in C?
...struct stat definition, which was missing the variable name.
Returns -1 on error instead of 0, which would be ambiguous for an empty file. off_t is a signed type so this is possible.
If you want fsize() to print a message on error, you can use this:
#include <sys/stat.h>
#include <sys/ty...
Swift class introspection & generics
...ft class I tried...
class MyClass {
}
let MyClassRef = MyClass.self
// ERROR :(
let my_obj = MyClassRef()
Hmm… the error says:
Playground execution failed: error: :16:1: error: constructing an object of class type 'X' with a metatype value requires an '@required' initializer
Y().me()
...
In what cases do I use malloc and/or new?
...;
struct foo {
double d[5];
};
int main() {
foo *f1 = malloc(1); // error, no cast
foo *f2 = static_cast<foo*>(malloc(sizeof(foo)));
foo *f3 = static_cast<foo*>(malloc(1)); // No error, bad
}
It's worse than that though. If the type in question is POD (plain old data) then yo...
Invalid postback or callback argument. Event validation is enabled using '
I am getting the following error when I post back a page from the client-side. I have JavaScript code that modifies an asp:ListBox on the client side.
...