How to read a text file into a list or an array with Python
You will have to split your string into a list of values using split() So, EDIT: I didn’t realise there would be so much traction to this. Here’s a more idiomatic approach.
arrays
lists and arrays in VBA
You will have to change some of your data types but the basics of what you just posted could be converted to something similar to this given the data types I used may not be accurate. Collections cannot be sorted so if you need to sort data you will probably want to use an array. … Read more
Delete 2D array C++
delete [] *M; is the same as delete [] M[0], so it is not equivalent to deleting all M[i] in a loop because only the first one would be deleted. The loop is the correct way to avoid memory leaks. Or better, use std::vector instead of manual allocations and you won’t need to worry about deleting pointers.
Printing an array in C++?
Just iterate over the elements. Like this: Note: As Maxim Egorushkin pointed out, this could overflow. See his comment below for a better solution.
How to solve PHP error ‘Notice: Array to string conversion in…’
When you have many HTML inputs named C[] what you get in the POST array on the other end is an array of these values in $_POST[‘C’]. So when you echo that, you are trying to print an array, so all it does is print Array and a notice. To print properly an array, you either loop through it and echo each element, or … Read more
How to clear all the elements of array in C?
Your use of strlen() is wrong, that is reliant on the contents of the buffer being a valid string; it doesn’t clear the entire buffer. Just use memset() with sizeof: Note that sizeof is not a function, so no parentheses are needed (or should be used, in my opinion) for cases like these. If your C library doesn’t include memset(), a plain loop … Read more
How to print a char array in C through printf?
The code posted is incorrect: a_static and b_static should be defined as arrays. There are two ways to correct the code: you can add null terminators to make these arrays proper C strings: Alternately, printf can print the contents of an array that is not null terminated using the precision field: The precision given after the . specifies the maximum number of characters … Read more
How can I check whether an array is null / empty?
There’s a key difference between a null array and an empty array. This is a test for null. “Empty” here has no official meaning. I’m choosing to define empty as having 0 elements: An alternative definition of “empty” is if all the elements are null: or
What’s the syntax for declaring an array of function pointers without using a separate typedef?
so your answer is But naturally, this is a bad practice, just use typedefs 🙂 Extra: Wonder how to declare an array of 3 pointers to functions taking int and returning a pointer to an array of 4 pointers to functions taking double and returning char? (how cool is that, huh? :)) :))
splitting a string into an array in C++ without using vector
It is possible to turn the string into a stream by using the std::stringstream class (its constructor takes a string as parameter). Once it’s built, you can use the >> operator on it (like on regular file based streams), which will extract, or tokenize word from it: