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On this page
  • Method Signature
  • Arguments
  • Examples
  • Simple listLen Example
  • listLen Example with Delimiter
  • listLen Example with IncludeEmptyValues
  • Additional Examples
  • Related

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  1. BoxLang Language
  2. Reference
  3. Built-in Functions
  4. list

ListLen

PreviousListLastNextListMap

Last updated 19 days ago

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Calculates the length of a list separated by the specified delimiter

Method Signature

ListLen(list=[string], delimiter=[string], includeEmptyFields=[boolean])

Arguments

Argument
Type
Required
Description
Default

list

string

true

string list to calculate the length

delimiter

string

false

string the list delimiter

,

includeEmptyFields

boolean

false

boolean whether to include empty fields in the returned result

false

Examples

Simple listLen Example

Get the number of elements in this list

listLen( "foo,bar,bar2,foo2" );

Result: 4

listLen Example with Delimiter

Get the number of elements in this list using a custom delimiter

listLen( "foo,bar|bar2|foo2", "|" );

Result: 3

listLen Example with IncludeEmptyValues

Get the number of elements in this list, including empty values

listLen( "foo,bar,,foo2", ",", "YES" );

Result: 4

Additional Examples

writeDump( listLen( "susi,sam,LAS,test" ) ); // 4
writeDump( listLen( "susi,,LAS,," ) ); // with empty values
writeDump( listLen( "susi,,LAS,,." ) );
 // 3

Related

Run Example
Run Example
Run Example
Run Example
ListSome
ListReduceRight
ListPrepend
ListFirst
ListLast
ListIndexExists
ListInsertAt
ListChangeDelims
ListFind
ListFindNoCase
ListContains
ListContainsNoCase
ListCompact
ListTrim
ListMap
ListDeleteAt
ListRemoveDuplicates
ListToArray
ListQualify
ListAppend
ListValueCount
ListValueCountNoCase
ListAvg
ListRest
ListGetAt
ListEvery
ListEach
ListSort
ListSetAt
ListFilter
GetToken
ListItemTrim