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How to inspect the return value of a function in GDB?
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I imagine there are better ways to do it, but the finish command executes until the current stack frame is popped off and prints the return value -- given the program
int fun() {
return 42;
}
int main( int argc, char *v[] ) {
fun();
return 0;
}
You can debug it as such ...
Specify sudo password for Ansible
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You can pass variable on the command line via --extra-vars "name=value". Sudo password variable is ansible_sudo_pass. So your command would look like:
ansible-playbook playbook.yml -i inventory.ini --user=username \
--extra-var...
C++ equivalent of java's instanceof
...e of course).
As pointed out dynamic_cast doesn't come for free. A simple and consistently performing hack that handles most (but not all cases) is basically adding an enum representing all the possible types your class can have and check whether you got the right one.
if(old->getType() == BOX...
What is the size of an enum in C?
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Taken from the current C Standard (C99): http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf
6.7.2.2 Enumeration specifiers
[...]
Constraints
The expression that defines the value of an enumeration constant shall be an integer
constan...
WKWebView not loading local files under iOS 8
For previous iOS 8 betas, load a local web app (in Bundle) and it works fine for both UIWebView and WKWebView , and I even ported a web game using the new WKWebView API.
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Hide the cursor of an UITextField
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Simply subclass UITextField and override caretRectForPosition
- (CGRect)caretRectForPosition:(UITextPosition *)position
{
return CGRectZero;
}
share
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Calling Python in Java?
... default')\nimport yourModule");
// execute a function that takes a string and returns a string
PyObject someFunc = interpreter.get("funcName");
PyObject result = someFunc.__call__(new PyString("Test!"));
String realResult = (String) result.__tojava__(String.class);
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What is Java String interning?
What is String Interning in Java, when I should use it, and why ?
7 Answers
7
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How to change the timeout on a .NET WebClient object
...m trying to download a client's data to my local machine (programatically) and their webserver is very, very slow which is causing a timeout in my WebClient object.
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MongoDB Aggregation: How to get total records count?
... is one of the most commonly asked question to obtain the paginated result and the total number of results simultaneously in single query. I can't explain how I felt when I finally achieved it LOL.
$result = $collection->aggregate(array(
array('$match' => $document),
array('$group' => ...