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How can mixed data types (int, float, char, etc) be stored in an array?
I want to store mixed data types in an array. How could one do that?
6 Answers
6
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What is the copy-and-swap idiom?
...concrete case. We want to manage, in an otherwise useless class, a dynamic array. We start with a working constructor, copy-constructor, and destructor:
#include <algorithm> // std::copy
#include <cstddef> // std::size_t
class dumb_array
{
public:
// (default) constructor
dumb_...
How to iterate over associative arrays in Bash
Based on an associative array in a Bash script, I need to iterate over it to get the key and value.
4 Answers
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How to define object in array in Mongoose schema correctly with 2d geo index
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trk : [{
lat : String,
lng : String
}]
or
trk : { type : Array , "default" : [] }
In the second case during insertion make the object and push it into the array like
db.update({'Searching criteria goes here'},
{
$push : {
trk : {
"lat": 50.3293714,
...
Best way to allow plugins for a PHP application
...nal way to accomplish this:
<?php
/** Plugin system **/
$listeners = array();
/* Create an entry point for plugins */
function hook() {
global $listeners;
$num_args = func_num_args();
$args = func_get_args();
if($num_args < 2)
trigger_error("Insufficient arguments...
Hash and salt passwords in C#
...generation is as the example in the question. You can convert text to byte arrays using Encoding.UTF8.GetBytes(string). If you must convert a hash to its string representation you can use Convert.ToBase64String and Convert.FromBase64String to convert it back.
You should note that you cannot use the...
How to convert byte array to string [duplicate]
I created a byte array with two strings. How do I convert a byte array to string?
4 Answers
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Python append() vs. + operator on lists, why do these give different results?
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To explain "why":
The + operation adds the array elements to the original array. The array.append operation inserts the array (or any object) into the end of the original array, which results in a reference to self in that spot (hence the infinite recursion).
The diff...
Get loop counter/index using for…of syntax in JavaScript
...cified order (yes, even after ES6). You shouldn’t use it to iterate over arrays. For them, there’s ES5’s forEach method that passes both the value and the index to the function you give it:
var myArray = [123, 15, 187, 32];
myArray.forEach(function (value, i) {
console.log('%d: %s', i, v...
How to check if an array field contains a unique value or another array in MongoDB?
...ee that they mention that the field you are using as your search can be an array, and how that is handled. "field : { $in : array }". What happens when you search for an array within an array of arrays? Not specified.
– Zut
Aug 14 '12 at 21:13
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