I can’t find a definite answer to this question in the documentation. If a column is an array type, will all the entered values be individually indexed? I created a simple table with one int[] column, and put a unique index on it. I noticed that I couldn’t add the same array of ints, which … Read more
Suppose I have an array and I want to pick one element at random. What would be the simplest way to do this? The obvious way would be array[random index]. But perhaps there is something like ruby’s array.sample? Or if not could such a method be created by using an extension? 16 Answers 16
How do I convert command-line arguments into a bash script array? I want to take this: ./something.sh arg1 arg2 arg3 and convert it to myArray=( arg1 arg2 arg3 ) so that I can use myArray for further use in the script. This previous SO post comes close, but doesn’t go into how to create an … Read more
I was asked this question in a job interview, and I’d like to know how others would solve it. I’m most comfortable with Java, but solutions in other languages are welcome. Given an array of numbers, nums, return an array of numbers products, where products[i] is the product of all nums[j], j != i. Input … Read more
How can I pass an array as parameter to a bash function? Note: After not finding an answer here on Stack Overflow, I posted my somewhat crude solution myself. It allows for only one array being passed, and it being the last element of the parameter list. Actually, it is not passing the array at … Read more
Why would someone want to use a linked-list over an array? Coding a linked-list is, no doubt, a bit more work than using an array and one may wonder what would justify the additional effort. I think insertion of new elements is trivial in a linked-list but it’s a major chore in an array. Are … Read more
As I was programming, I haven’t seen an instance where an array is better for storing information than another form thereof. I had indeed figured the added “features” in programming languages had improved upon this and by that replaced them. I see now that they aren’t replaced but rather given new life, so to speak. … Read more
I’ve found some interesting behaviour in PowerShell Arrays, namely, if I declare an array as: $array = @() And then try to add items to it using the $array.Add(“item”) method, I receive the following error: Exception calling “Add” with “1” argument(s): “Collection was of a fixed size.” However, if I append items using $array += … Read more
I’m reading the documentation and I am constantly shaking my head at some of the design decisions of the language. But the thing that really got me puzzled is how arrays are handled. I rushed to the playground and tried these out. You can try them too. So the first example: var a = [1, … Read more
I use a lot of lists and arrays but I have yet to come across a scenario in which the array list couldn’t be used just as easily as, if not easier than, the linked list. I was hoping someone could give me some examples of when the linked list is notably better. 15 Answers … Read more
