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What is the difference between HashSet and List?
...m mathematical set operations against a Set: Union/Intersection/IsSubsetOf etc.
HashSet doesn't implement IList only ICollection
You cannot use indices with a HashSet, only enumerators.
The main reason to use a HashSet would be if you are interested in performing Set operations.
Given 2 sets: ha...
How do I export UIImage array as a movie?
...buffer = NULL;
// This was just our utility class to get screen sizes etc.
ATHSingleton *singleton = [ATHSingleton singletons];
int i = 0;
while (1)
{
// Check if the writer is ready for more data, if not, just wait
if(writerInput.readyForMoreMediaData){
...
Detecting Unsaved Changes
...
I like the approach of comparing defaultValue etc properties rather than setting a dirty bit. This means that if someone changes a field, then changes it back, then the form will not report as dirty.
– thelem
Jun 26 '14 at 15:04
...
Default value to a parameter while passing by reference in C++
...st &); // B defaulted
void foo (C const &); // A & B defaulted etc...
It is also possible to redefine default arguments to virtual functions in derived class, which overloading avoids:
class Base {
public:
virtual void f1 (int i = 0); // default '0'
virtual void f2 (int);
inli...
Trying to start a service on boot on Android
...r>
</receiver>
(you don't need the android:enabled, exported, etc., attributes: the Android defaults are correct)
In MyBroadcastReceiver.java:
package com.example;
public class MyBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, In...
Side-by-side plots with ggplot2
...rint the side effect to a file, specify a device driver (such as pdf, png, etc), e.g.
pdf("foo.pdf")
grid.arrange(plot1, plot2)
dev.off()
or, use arrangeGrob() in combination with ggsave(),
ggsave("foo.pdf", arrangeGrob(plot1, plot2))
This is the equivalent of making two distinct plots using p...
Convert Python program to C/C++ code? [closed]
...Looks like it might be a good replacement for pyinstaller, py2exe, py2app, etc. The --recurse-*** flags are important to set properly though.
– ccpizza
Jul 24 '16 at 8:23
...
C# Sortable collection which allows duplicate keys
...ion
}
You will use it when instancing a new SortedList, SortedDictionary etc:
SortedList<int, MyValueClass> slist = new SortedList<int, MyValueClass>(new DuplicateKeyComparer<int>());
Here int is the key that can be duplicate.
...
Proper use cases for Android UserManager.isUserAGoat()?
...ill lead to a compile error if you're forcing to the following else block, etc.
– djechlin
Nov 15 '12 at 2:01
166
...
How to copy Java Collections list
...ist.set(int,E) thus element 0 will over write element 0 in the target list etc etc. Not particularly clear from the javadocs I'd have to admit.
List<String> a = new ArrayList<>(a);
a.add("foo");
b.add("bar");
List<String> b = new ArrayList<>(a); // shallow copy 'a'
// the ...