Count Instances of a Character in a String

Create a function that takes two strings as arguments and returns the number of times the first string (the single character) is found in the second string.

Examples

charCount("a", "sample") ➞ 1

charCount("c", "Chamber of secrets") ➞ 1

charCount("b", "big fat bubble") ➞ 4

Notes

Your output must be case-sensitive (see second example).