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How to close a Java Swing application from the code
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The following program includes code that will terminate a program lacking extraneous threads without explicitly calling System.exit(). In order to apply this example to applications using threads/listeners/timers/etc, one need only insert cleanup...
D Programming Language in the real world? [closed]
...performance/space cost if they make the language a lot more usable. These include garbage collection, a monitor object for each class, runtime type info, etc.
Unlike Ruby, Python, PHP, etc, D tries to be almost as fast as C, even if it is less dynamic and slightly more difficult to program in tha...
Can you build dynamic libraries for iOS and load them at runtime?
... calling an init() function implemented inside your own, separate dylib:
#include <dlfcn.h>
initWrapper() {
char *dylibPath = "/Applications/myapp.app/mydylib2.dylib";
void *libHandle = dlopen(dylibPath, RTLD_NOW);
if (libHandle != NULL) {
// This assumes your dylib’s ...
Does a const reference class member prolong the life of a temporary?
...ou're referring to something which has vanished. The following will work
#include <string>
#include <iostream>
class Sandbox
{
public:
const string member = " "; //default to whatever is the requirement
Sandbox(const string& n) : member(n) {}//a copy is made
};
int main(...
java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
...ers or applications connected to the same DB instance (which will probably include many schemas) and together you are using too many connections.
Solution:
Increasing the number of cursors on the database (if resources allow) or
Decreasing the number of threads in the application.
Cursor leak
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Find all files in a directory with extension .txt in Python
... want it recursive you can use .glob('**/*.txt)
1The pathlib module was included in the standard library in python 3.4. But you can install back-ports of that module even on older Python versions (i.e. using conda or pip): pathlib and pathlib2.
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Multiline bash commands in makefile
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You can include comments by using the following form: command ; ## my comment \` (the comment is between ;` and `\`). This seems to work fine except that if you run the command manually (by copy-and-paste), the command history will ...
What does it mean: The serializable class does not declare a static final serialVersionUID field? [d
...ion of the Object Serialization Specification, which specifically does not include additional fields or change of field order, and when you haven't provided readObject(), writeObject(), and/or readResolve() or /writeReplace() methods and/or a serializableFields declaration that could cope with the c...
Can a class member function template be virtual?
...mplate virtual function may be used not only in your own code, but also be included into multiple "client" binaries, possibly compiled to a dynamically-linked shared libraries. Now, imagine that each of those libraries inherit from your class and introduce a new function instance. Imagine then that ...
How to determine the memory footprint (size) of a variable?
...EBUG2 is a extension for PHP. Xdebug allows you to log all function calls, including parameters and return values to a file in different formats.There are three output formats. One is meant as a human readable trace, another one is more suited for computer programs as it is easier to parse, and the ...