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What is the purpose of Serialization in Java?
...so useful.
Serialization is simply turning an existing object into a byte array. This byte array represents the class of the object, the version of the object, and the internal state of the object. This byte array can then be used between JVM's running the same code to transmit/read the object.
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How to call a function from a string stored in a variable?
...an object's function whose name is in a variable do this: call_user_func( array($obj,$func), $params )
– BlackDivine
Nov 18 '11 at 11:38
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Difference between class and type
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A class is a type. An interface is a type. A primitive is a type. An array is a type.
Therefore, every type is also either a class (including an enum constant), an interface, a primitive, or an array.
There are two distinct categories of types: primitive types and reference types:
A variab...
Can a Byte[] Array be written to a file in C#?
I'm trying to write out a Byte[] array representing a complete file to a file.
8 Answers
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Heap vs Binary Search Tree (BST)
... explained in this answer
***: log(n) for pointer tree heap, n for dynamic array heap
Advantages of binary heap over a BST
average time insertion into a binary heap is O(1), for BST is O(log(n)). This is the killer feature of heaps.
There are also other heaps which reach O(1) amortized (stronge...
What is the leading LINQ for JavaScript library? [closed]
... implementation lazy as in .NET Linq, they just evaluate immediately using arrays.
For a very nice, complete set of functional list operations, try: http://osteele.com/sources/javascript/functional/
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Parsing JSON array into java.util.List with Gson
... just need to get the Type of a List<String> and then parse the JSON array into that Type, like this:
import java.lang.reflect.Type;
import com.google.gson.reflect.TypeToken;
JsonElement yourJson = mapping.get("servers");
Type listType = new TypeToken<List<String>>() {}.getType()...
Sort NSArray of date strings or objects
I have an NSArray that contains date strings (i.e. NSString) like this: "Thu, 21 May 09 19:10:09 -0700"
9 Answers
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How to sort in-place using the merge sort algorithm?
.... It downgrades the performance to O(N2).
The idea is to sort part of the array while using the rest as working area for merging.
For example like the following merge function.
void wmerge(Key* xs, int i, int m, int j, int n, int w) {
while (i < m && j < n)
swap(xs, w+...
What do querySelectorAll and getElementsBy* methods return?
... querySelectorAll ) work the same as getElementById or do they return an array of elements?
10 Answers
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