It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
int main()
{
for(;;) {
printf("INSIDE FOR LOOP");
return 0;
}
}
How many times is the printf statement gonna be printed? and why?
The statement is printed 1 time. The return exits the loop and the program.
It loops forever because there is no condition (what normally goes between the ;;).
Related
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 9 years ago.
Currently I am doing the following and was wondering if there was a way of merging this?
merged = list_with_objects_that_have_url_and_name_attributes
merged = merged.uniq{|ex| ex.url }
merged = merged.uniq{|ex| ex.name }
I'd like something like:
merged.uniq{|ex| ex.name || ex.url}
Not quite what you asked for, but it's compact:
merged.uniq!(&:url).uniq!(&:name)
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
Can you compare multiple values in a single if statement in Ruby? If so, how? I know in other languages, you would just use a double ampersand (&&), but I have never seen any example or documentation about it, even in the official ruby documentation! Thanks for all the help in advance.
Yes, you can use the && operator
if a == 1 && b == 2
# do things
end
It IS in the documentation.
http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html#UG
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
Is it possible to allow only one instance of any windows app? If yes, how?
Thanks!
You can create a named mutex. At the start of the application, typically the WinMain() function, if you succeed in having the mutex, it implies the instance is the first one else you can flag an error or activate the first application using other means.
HANDLE hMutex = CreateMutex(NULL, FALSE, "MY_MUTEX_123_UNIQUE_STRING");
if (ERROR_ALREADY_EXISTS == GetLastError())
std::cout<<"This is not the first instance\n";
else
std::cout<<"This is first instance\n";
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 11 years ago.
How do I display the current time? Please give me an example.
I know about msdn but still have a problem.
Please use by trying DateTime.Now to access the current time.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
The Tao of Programming begins with the words:
Thus spake the master programmer:
"When you have learned to snatch the error code from the trap frame,
it will be time for you to leave."
Please enlighten me.
It is not for the master to enlighten the novice, it is for the novice to travel the pathways to become a master. When you see Tao you know.