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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
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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
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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
...
Any difference between First Class Function and High Order Function
... = []
map f (x:xs) = f x : map f xs
That is, it takes a function, and an array, and returns a new array with the function applied to each element.
Functional languages -- languages where functions are the primary means of building programs -- all have first class functions. Most also have higher ...
What does iota of std::iota stand for?
...he use of the letter “i” as a typical integer variable, especially for array subscripting.
But let's suppose there is a deeper meaning.
According to the Oxford English Dictionary, “iota” is “The name of the Greek letter Ι, ι, corresponding to the Roman I, i; the smallest letter of the ...
How do I provide custom cast support for my class?
.....
MyClass bar = (MyClass)foo;
// explicitly convert bar into a new byte[] array...
byte[] baz = (byte[])bar;
Using implicit means that users of your class don't need to perform an explicit conversion, it all happens transparently:
byte[] foo = new byte[] { 1, 2, 3, 4, 5 };
// imlpicitly convert ...
How to use ArrayAdapter
... but don't know how to show both reason and long_val in the ListView using ArrayAdapter.
5 Answers
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