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Learning WML, and WMLScript by Martin Frost

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Name

removeAt — Remove an element from a list that is stored as a string

Usage

String.removeAt(str, index, sep)

str : String

index : Number

sep : String

Description

(See elementAt( )’s description for an explanation of how a string is processed as a list of “elements.”)

Starting with the list stored as string str, returns a list with the element at position index removed. (The first element has index zero.) The separator is also removed, so the number of elements in the list goes down by one. The return value is a new string; str itself remains unmodified.

If index is past the end of the list, the last element is removed. Similarly, if index is less than zero, the first element is removed. If the string contains only one element, or is empty, an empty string is returned. If index is a floating-point value, it’s first converted to an integer with Float.int( ).

Returns invalid if any of the values can’t be converted to the required types or if sep is the empty string.

Examples

String.removeAt("a;b;c;d", 2, ";")

returns string "a;b;d"

String.removeAt("a;b;c;d", -1, ";")

returns string "b;c;d"

String.removeAt("a;b;c;d", 6, ";")

returns string "a;b;c"

String.removeAt("a;b;c;d", 1.2, ";")

returns string "a;c;d"

String.removeAt("", 0, ";")

returns string ""

String.removeAt("x", 0, ";")

returns string ""

String.removeAt(invalid, 1, "x")

returns invalid

String.removeAt("foo", "two", "x")

returns invalid

String.removeAt("foo", 1, invalid)

returns invalid

String.removeAt("foo", 1, "")

returns invalid

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