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Bookmark or Share- c - What does *arr[] mean? - Stack Overflowint *arr[3]; arr[0] = m[0]; arr[1] = m[1]; arr[2] = m[2]; Each initializer ( m[0] , m[1] , and m[2] ) is a 4-element array of int ; however, under most circumstances, an expression of type "array of T " will be converted ("decay") to an expression of type "pointer to T ", and the value of the expression will be the address of the first element ...
- python - Explain the bubble sort algorithm? - Stack Overflown = len(arr) We are literally assigning the length of the array into the variable n. This is probably shorthand for number of elements. len(arr) is a function that takes an array/list, and returns its length. Similarly, one could call print len(arr) or simply len(arr).
- c - In an array, what does &arr [2] return? - Stack OverflowIn a C based language, &arr[0] is a pointer to the first element in the array while &arr[2] is a pointer to the third element in the array. Arrays decay into pointers to the first element, so in certain context array and &arr[0] are actually the same thing: a pointer to the first element.
- c++ - Why is arr and &arr the same? - Stack OverflowI know that &arr[0] and arr evaluates to the same number, but that is not my question! 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. If the address of the arr is stored somewhere then &arr should give me the address of ...
- What is the meaning of arr [:] in assignment in numpy?arr[:] returns arr (alist[:] returns a copy of a list). arr[:]=arr2 performs an inplace replacement; changing the values of arr to the values of arr2. The values of arr2 will be broadcasted and copied as needed. arr=arr2 sets the object that the arr variable is pointing to. Now arr and arr2 point to the same thing (whether array, list or ...
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