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When do you use varargs in Java?
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An array parameter also can receive an indeterminate number of objects but a varargs parameter allows more flexibility and convenience at the point of invocation. You can write code to build an array and pass it, or you can let ...
Creating a BLOB from a Base64 string in JavaScript
...er's code point (charCode) will be the value of the byte. We can create an array of byte values by applying this using the .charCodeAt method for each character in the string.
const byteNumbers = new Array(byteCharacters.length);
for (let i = 0; i < byteCharacters.length; i++) {
byteNumbers[...
Pointers in C: when to use the ampersand and the asterisk?
...ed to by the pointer. But things work differently when you're working with arrays, strings or when you're calling functions with a pointer copy of a variable. It's difficult to see a pattern of logic inside all of this.
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Best way to combine two or more byte arrays in C#
I have 3 byte arrays in C# that I need to combine into one. What would be the most efficient method to complete this task?
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Find the Smallest Integer Not in a List
... you can do it in O(N) time and O(1) additional space. Just go through the array sequentially and for every index write the value at the index to the index specified by value, recursively placing any value at that location to its place and throwing away values > N. Then go again through the array...
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_...
Pass Array Parameter in SqlCommand
I am trying to pass array parameter to SQL commnd in C# like below, but it does not work. Does anyone meet it before?
12 A...
How do I clone a range of array elements to a new array?
I have an array X of 10 elements. I would like to create a new array containing all the elements from X that begin at index 3 and ends in index 7. Sure I can easily write a loop that will do it for me but I would like to keep my code as clean as possible. Is there a method in C# that can do it for m...
How to find the 'sizeof' (a pointer pointing to an array)?
...t know what the pointer is pointing to. There are tricks, like ending the array with a known out-of-band value and then counting the size up until that value, but that's not using sizeof().
Another trick is the one mentioned by Zan, which is to stash the size somewhere. For example, if you're d...
How to loop through an array containing objects and access their properties
I want to cycle through the objects contained in an array and change the properties of each one. If I do this:
15 Answers
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