To iterate over all the key-value pairs in a table you can use pairs: outputs: Edit: Note that Lua doesn’t guarantee any iteration order for the associative part of the table. If you want to access the items in a specific order, retrieve the keys from arr and sort it. Then access arr through the … Read more
Using /= and *= allows you to eliminate an intermediate temporary array, thus saving some memory. Multiplication is less expensive than division, so is marginally faster than Since we are using basic numpy methods here, I think this is about as efficient a solution in numpy as can be. In-place operations do not change the … Read more
You can use: Or with ax=0 the average is performed along the row, for each column, returning an array with ax=1 the average is performed along the column, for each row, returning an array with ax=None the average is performed element-wise along the array, returning a scalar value
This is not how you initialize an array, but for: The first declaration: char buf[10] = “”; is equivalent to char buf[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; The second declaration: char buf[10] = ” “; is equivalent to char buf[10] = {‘ ‘, 0, 0, 0, 0, 0, 0, … Read more
delete[] monsters; Is incorrect because monsters isn’t a pointer to a dynamically allocated array, it is an array of pointers. As a class member it will be destroyed automatically when the class instance is destroyed. Your other implementation is the correct one as the pointers in the array do point to dynamically allocated Monster objects. … Read more
This will iterate through all the elements: Prints: This will iterate through all the elements giving you the value and the index: Prints: I’m not quite sure from your question which one you are looking for.
This is a challenge question from my online textbook I can only get the numbers to prin forward… 🙁 Write a for loop to print all elements in courseGrades, following each element with a space (including the last). Print forwards, then backwards. End each loop with a newline. Ex: If courseGrades = {7, 9, 11, … Read more
needs to be
Try this: