Finds the first occurrence of a substring in a string, from a specified start position. If substring is not in string, returns zero. The search is case-sensitive.

find(substring, string [, start]) → returns numeric

Argument Reference

substring string

The string you are looking for.

string string

The string to search in.

start numeric
Default: 1

The position from which to start searching in the string

Sample code invoking the find function

Returns the index of apple in the string.

find("apple", "An apple a day keeps the doctor away.")

Expected Result: 4

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