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How to Sort Multi-dimensional Array by Value?
How can I sort this array by the value of the "order" key? Even though the values are currently sequential, they will not always be.
...
What is the most accurate way to retrieve a user's correct IP address in PHP?
...cleaner way to get the IP address:
function get_ip_address(){
foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key){
if (array_key_exists($key, $_SERVER) === true){
...
Deserializing JSON Object Array with Json.net
...> customer { get; set; }
}
Note that I'm using a List<>, not an Array. Now create the following class:
class MyListConverter : JsonConverter
{
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var token ...
How to convert an int array to String with toString method in Java [duplicate]
...
What you want is the Arrays.toString(int[]) method:
import java.util.Arrays;
int[] array = new int[lnr.getLineNumber() + 1];
int i = 0;
..
System.out.println(Arrays.toString(array));
There is a static Arrays.toString helper method for e...
Java HashMap performance optimization / alternative
...f 1,300 objects per hash bucket = very very bad. However if I turn the two arrays into a number in base 52 I am guaranteed to get a unique hash code for every object:
public int hashCode() {
// assume that both a and b are sorted
return a[0] + powerOf52(a[1], 1) + powerOf52(b[...
efficient circular buffer?
... My guess is that its implemented as a linked list and not an array.
– e-satis
Jan 24 '17 at 14:56
1
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Is there a performance difference between a for loop and a for-each loop?
...e
completely. The resulting idiom
applies equally to collections and
arrays:
// The preferred idiom for iterating over collections and arrays
for (Element e : elements) {
doSomething(e);
}
When you see the colon (:), read it as
“in.” Thus, the loop above reads as
“for each...
Can mustache iterate a top-level array?
...
How do I get, for example, the 2nd element of the array? I'm trying to do {{.1}} with mustache.js and its not working.
– thouliha
Apr 2 '15 at 17:22
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Converting array to list in Java
How do I convert an array to a list in Java?
19 Answers
19
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Make copy of an array
I have an array a which is constantly being updated. Let's say a = [1,2,3,4,5] . I need to make an exact duplicate copy of a and call it b . If a were to change to [6,7,8,9,10] , b should still be [1,2,3,4,5] . What is the best way to do this? I tried a for loop like:
...