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Real World Example of the Strategy Pattern
...(an implementation of the strategy interface):
List<String> names = Arrays.asList("Anne", "Joe", "Harry");
Collections.sort(names, new Comparator<String>() {
public int compare(String o1, String o2) {
return o1.length() - o2.length();
}
});
Assert.assertEquals(Arrays.asList("Joe...
Getting multiple keys of specified value of a generic Dictionary?
... tried to add to the list it would throw an exception (you can't add to an array). And yes, BiLookup would probably be a better name.
– Jon Skeet
Aug 4 '09 at 15:09
...
Unit testing code with a file system dependency
...ave_shouldBase64EncodeContents() {
OutputStream outputStream = new ByteArrayOutputStream();
StreamFactory streamFactory = mock(StreamFactory.class);
when(streamFactory.outStream()).thenReturn(outputStream);
// Run the method under test
Base64FileWriter fileWriter = new Base64Fil...
What exception classes are in the standard C++ library
... std::bad_alloc <new> failure to allocate storage
std::bad_array_new_length <new> invalid array length
std::bad_cast <typeinfo> execution of an invalid dynamic-cast
std::bad_exception <exception> signifies an incorrect exception was thrown
std::bad_funct...
What is the most ridiculous pessimization you've seen? [closed]
...Create columns with subfields to save space.
Denormalize into fields-as-an-array.
That's off the top of my head.
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How do I break a string over multiple lines?
...ok right - for example, an innocuous colon : within one string in a string array makes YAML interpret it as an array of objects. It violates the principle of least astonishment.
– Vicky Chijwani
Jan 31 '18 at 14:48
...
Java Generics (Wildcards)
...nds B {}
class D extends B {}
Then
List<? extends A> la;
la = new ArrayList<B>();
la = new ArrayList<C>();
la = new ArrayList<D>();
List<? super B> lb;
lb = new ArrayList<A>(); //fine
lb = new ArrayList<C>(); //will not compile
public void someMethod(Li...
Looking for a good world map generation algorithm [closed]
..." its own land tiles (as opposed to simply acting as a generator for a map array) and essentially sits on or acts as its own plate, it wouldn't be that hard to implement. I'm going to have to try this now :)
– nathanchere
Apr 16 '10 at 5:01
...
What is the difference between == and equals() in Java?
...make a difference. Its the "value" (that is: the contents of the character array) inside each String instance that is being compared.
On the other hand, the "==" operator compares the value of two object references to see whether they refer to the same String instance. If the value of both object r...
How do I print the elements of a C++ vector in GDB?
...t on your compiler version, but for GCC 4.1.2, the pointer to the internal array is:
myVector._M_impl._M_start
And the GDB command to print N elements of an array starting at pointer P is:
print P@N
Or, in a short form (for a standard .gdbinit):
p P@N
...