I am using Python/NumPy, and I have two arrays like the following: And I would like to create a new array: and append items to it. So for example if the new items to append are: Then now array3 would be an array with two rows and two columns like the one shown below: I … Read more
Using org.json library:
You are trying to call do_something before you declare it. You need to add a function prototype before your printf line: Or you need to move the function definition above the printf line. You can’t use a function before it is declared.
If it’s a one-dimensional array a, will give the number of elements of a. If b is a rectangular multi-dimensional array (for example, int[,] b = new int[3, 5];) will give the number of dimensions (2) and will get the length of any given dimension (0-based indexing for the dimensions – so b.GetLength(0) is 3 and b.GetLength(1) is 5). See System.Array documentation for more info. As … Read more
I’m trying to read a CSV file into a list of lists (of strings), pass it around for getting some data from a database, build a new list of lists of new data, then pass that list of lists so it can be written to a new CSV file. I’ve looked all over, and I can’t … Read more
Note that the characters in $IFS are treated individually as separators so that in this case fields may be separated by either a comma or a space rather than the sequence of the two characters. Interestingly though, empty fields aren’t created when comma-space appears in the input because the space is treated specially. To access an individual element: To … Read more
Let’s suppose I have the following PHP code which attempts to read from an array called $arr which takes on the values {fullname, studentnumber, email}. Upon submission of my HTML form, this PHP code will execute the foreach loop, and store the values posted to the page in the $_SESSION array. The above code doesn’t work as intended. If I … Read more
It works for characters and numbers, going forwards or backwards with an optional step.
The error is here: You are passing the first item of words, instead of the array. Instead, pass the array to the function: Problem solved! Here’s a breakdown of what the problem was: I’m guessing in your browser (chrome throws a different error), words[] == words[0], so when you call hasLetter(“a”,words[]);, you are actually calling hasLetter(“a”,words[0]);. So, in essence, … Read more
You are trying to call do_something before you declare it. You need to add a function prototype before your printf line: Or you need to move the function definition above the printf line. You can’t use a function before it is declared.