Mar 1, 2016 · Your question involves a mix of basic Python syntax, and numpy specific details. In many ways it is the same for lists, but not exactly. arr[:, 0] returns the 1st column of arr (a …

Jan 13, 2021 · In fact it is just interpreting that it needs to go till the boundary as arr [::1] gives normal array. Is this just coded as a special case or is there something more going on?

Mar 30, 2020 · 1 Suppose I have an array of integers called arr. I am trying to understand the distinction between *&arr and *&arr[0]. I read that in C++, arr is essentially a pointer to the first …

Apr 5, 2016 · Got it, so with arr [i] [j] you actually first grab the inner array then the element inside the inner array and print it out, thanks! Your array [0] [0] made it click.

Jul 10, 2016 · what does *arr[] mean? As standalone expression *arr[] is not valid. For variable definitions there are two meanings here, depending of the context in which such an expression …

Sep 29, 2011 · In this example i = 3, so arr[3] = 40. It then increases the value from 40 to 41 .So arr[i]++ increments the value of this particular index and a[i++] first increments the index and …

The question is why &arr and arr evaluates to the same number. If arr is a literal (not stored anyware), then the compiler should complain and say that arr is not an lvalue.

Jun 21, 2016 · Theoretically, *arr[] and **arr are different. For example : char *arr[size]; //case 1 Here arr is a an array of size size whose elements are of the type char* Whereas, char **arr; …

Dec 27, 2019 · what is the working of arr [arr1,arr2] in numpy Asked 5 years, 8 months ago Modified 5 years, 8 months ago Viewed 1k times

The trick is to use the expression (&arr) [1] - arr to get the array arr size. Both arr and &arr points to the same memory location, but they both have different types.