CollectionMap()

Calls the given closure with every element in the given collection. the function returns an array or struct (depending on the input) that contains all values returned by the closure.

CollectionMap( collection=object, closure=function, parallel=boolean, maxThreads=number );

Returns: object

Argument Description Default
collection
object, required

collection to iterate

Alias: object
closure
function, required

UDF/Closure that is called with every value in the collection

Alias: function, callback, udf
parallel
boolean, optional

execute closures parallel
maxThreads
number, optional

maximum number of threads executed, ignored when argument "parallel" is set to false

Alias: maxThreadCount

20

Examples

// array
people = [ { name = "Alice", age = 32 }, { name = "Bob", age = 29 }, { name = "Eve", age = 41 }];

dump(CollectionMap(people, function(p) { return p.name; }));


// member function
dump(people.map(function(p) { return p.name; }));


// struct
person = { name = "Alice", age = 32, email = "alice@example.com" };


dump(CollectionMap(person, function(key,value) { return isnumeric(value); }));


// member function
dump(person.map(function(key,value) { return isnumeric(value); }));

See also