StringCount

Counts the number of times a given substring occurs in a string.

Syntax

• StringCount(s, x[, f[, δ]])

  • s is the string to be searched

  • x is the substring to search for

  • f is a string

  • δ is a positive integer

Description

If s and x are strings, then StringCount returns the number of times x occurs in s, subject to any additional restrictions imposed by the remaining arguments.

f specifies flags for the algorithm. It is a string that can contain zero or more of the following characters:

• i: Makes StringCount search for x in a case-insensitive manner.

• w: Makes StringCount only consider x to be a substring of s if x is found as a full word in s.

If omitted, f defaults to "" (no options).

Finally, if δ is specified, StringCount will begin searching s for x at character index δ in s (the first character having index 1).

Examples

Alice ≔ ExampleData("Alice in Wonderland");

'("rabbit", "beautiful", "extraordinary", "mirror") @ (word ↦ StringCount(Alice, word, "i"))

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