This is the legacy 4D documentation web site. Documentations are progressively being moved to developer.4d.com
- 4D Language Reference
-
- Collections
-
-
About collections
-
Type conversions between collections and 4D arrays
-
collection.length
-
collection.average( )
-
collection.clear( )
-
collection.combine( )
-
collection.concat( )
-
collection.copy( )
-
collection.count( )
-
collection.countValues( )
-
collection.distinct( )
-
collection.equal( )
-
collection.every( )
-
collection.extract( )
-
collection.fill( )
-
collection.filter( )
-
collection.find( )
-
collection.findIndex( )
-
collection.indexOf( )
-
collection.indices( )
-
collection.insert( )
-
collection.join( )
-
collection.lastIndexOf( )
-
collection.map( )
-
collection.max( )
-
collection.min( )
-
collection.orderBy( )
-
collection.orderByMethod( )
-
collection.pop( )
-
collection.push( )
-
collection.query( )
-
collection.reduce( )
-
collection.remove( )
-
collection.resize( )
-
collection.reverse( )
-
collection.shift( )
-
collection.slice( )
-
collection.some( )
-
collection.sort( )
-
collection.sum( )
-
collection.unshift( )
-
ARRAY TO COLLECTION
-
COLLECTION TO ARRAY
-
New collection
-
New shared collection
-
collection.concat( )
| collection.concat ( value {; value2 ; ... ; valueN} ) -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| value | Number, Text, Object, Collection, Date, Boolean |
|
Value(s) to concatenate. If value is a collection, all collection elements are added to the original collection | |||||
| Function result | Collection |
|
New collection with value(s) added to the original collection | |||||
The collection.concat( ) method returns a new collection containing the elements of the original collection with all elements of the value parameter added to the end.
Note: This method does not modify the original collection.
If value is a collection, all its elements are added as new elements at the end of the original collection. If value is not a collection, it is added itself as a new element.
C_COLLECTION($c)
$c:=New collection(1;2;3;4;5)
$fruits:=New collection("Orange";"Banana";"Apple";"Grape")
$fruits.push(New object("Intruder";"Tomato"))
$c2:=$c.concat($fruits) //[1,2,3,4,5,"Orange","Banana","Apple","Grape",{"Intruder":"Tomato"}]
$c2:=$c.concat(6;7;8) //[1,2,3,4,5,6,7,8]
Product: 4D
Theme: Collections
Number:
705251
Created: 4D v16 R6
4D Language Reference ( 4D v19)
4D Language Reference ( 4D v19.1)
4D Language Reference ( 4D v19.4)
4D Language Reference ( 4D v19.5)
4D Language Reference ( 4D v19.6)
4D Language Reference ( 4D v19.7)
4D Language Reference ( 4D v19.8)
