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Mapping two integers to one, in a unique and deterministic way
Imagine two positive integers A and B. I want to combine these two into a single integer C.
18 Answers
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Reverse engineering from an APK file to a project
...an unknown APK file.
Download dex2jar tool from dex2jar.
Use the tool to convert the APK file to JAR:
$ d2j-dex2jar.bat demo.apk
dex2jar demo.apk -> ./demo-dex2jar.jar
Once the JAR file is generated, use JD-GUI to open the JAR file. You will see the Java files.
The output will be similar to...
Why does an overridden function in the derived class hide other overloads of the base class?
...n, the rationale behind the name hiding, i.e. why it actually was designed into C++, is to avoid certain counterintuitive, unforeseen and potentially dangerous behavior that might take place if the inherited set of overloaded functions were allowed to mix with the current set of overloads in the giv...
How can I display a list view in an Android Alert Dialog?
...Adapter.add("Gatti");
builderSingle.setNegativeButton("cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builderSingle.setAdapter(arrayAdapter, new ...
How to fix “Incorrect string value” errors?
...
The table and fields have the wrong encoding; however, you can convert them to UTF-8.
ALTER TABLE logtest CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
ALTER TABLE logtest DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
ALTER TABLE logtest CHANGE title title VARCHAR(100) ...
Reliable method to get machine's MAC address in C#
...
Cleaner solution
var macAddr =
(
from nic in NetworkInterface.GetAllNetworkInterfaces()
where nic.OperationalStatus == OperationalStatus.Up
select nic.GetPhysicalAddress().ToString()
).FirstOrDefault();
Or:
String firstMacAddress = NetworkInterface
....
Quicksort: Choosing the pivot
...m. Database records can be costly to compare.
Update: Pulling comments into answer.
mdkess asserted:
'Median of 3' is NOT first last middle. Choose three random indexes, and take the middle value of this. The whole point is to make sure that your choice of pivots is not deterministic - if i...
How do I stop Entity Framework from trying to save/insert child objects?
... trying to save that entity's child entities. This is causing all sorts of integrity problems. How do I force EF to only save the entity I want to save and therefore ignore all child objects?
...
Stack smashing detected
...ude <stdio.h>
void func()
{
char array[10];
gets(array);
}
int main(int argc, char **argv)
{
func();
}
The compiler, (in this case gcc) adds protection variables (called canaries) which have known values. An input string of size greater than 10 causes corruption of this variabl...
Android, getting resource ID from string?
...hod in one of my classes. It needs to use both the id that the reference points to and also it needs the string. How should I best achieve this?
...