Logic & Pattern Matching

math Module

math.add(...nums)

Returns the sum of all arguments.

math.sub(a, b)

Returns the difference of a - b.

math.mul(...nums)

Returns the product of all arguments.

math.div(a, b)

Returns the quotient of a / b.

math.gt(a, b)

Returns Number(1) if a > b, otherwise Void.

math.lt(a, b)

Returns Number(1) if a < b, otherwise Void.

math.eq(a, b)

Returns Number(1) if a == b (value equality), otherwise Void.

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regex Module

regex.parse(pattern, ?flags = "")

Compiles a String pattern into an Opaque RegExp handle.

() {
  // re is now an Opaque handle
  re = regex.parse("hello", "i")
  ? (regex.match("HELLO world", re)) { log.print("Matched!") }
}

regex.match(string, pattern)

Returns Number(1) if the string matches the pattern, otherwise Void. The pattern can be a String or an Opaque handle returned by regex.parse.

regex.replace(string, pattern, replacement)

Returns a new string with all occurrences of the pattern replaced.

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logic Module

Provides functional logical composition.

Important: These tasks are standard Hank functions and do not support short-circuiting. All arguments are evaluated before the task is called.

logic.and(...args)

Returns the last argument if all provided arguments are truthy (not Void). If any argument is Void, returns Void.

logic.or(...args)

Returns the first truthy argument (not Void) encountered. If all arguments are Void, returns Void.