<Array>.Filter (Function)

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Constants for managing the arrays

Functions for managing arrays

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<Array>.Filter (Function)

In french: <Tableau>.Filtre

Returns an array containing the elements of a source array for which a procedure returns True.

Example

// Retrieve an array with all the customers
arrCustomer is array of Customer

// Construct the array of customers a with negative account balance
arrCustomerNegativeBalance is array of Customer
arrCustomerNegativeBalance = arrCustomer.Filter(ACustomer => ACustomer.Balance<0)

Syntax

<Result> = <Source array>.Filter(<Condition to check>)

<Result>: WLanguage array

Array that contains the elements of the <Array> for which the <Condition to check> returns True.

<Source array>: Control name

Name of Array variable to use. This array must be a one-dimensional array.

<Condition to check>: WLanguage procedure

Name of the WLanguage procedure to be executed for each element of the <Source array>. This procedure must return True or False.
This procedure can be:
a global or local procedure,
an internal procedure.
It is also possible to directly use a lambda procedure.

Remarks

Operating mode

The <Condition to check> procedure is called for each element of the array by passing this element as a parameter.

If the procedure returns True, the element from the source array is stored in the <Result> array.

Remark: You can use the following functions in the same line of code: Map, <Array>.Reduce, <Array>.Apply, Min, Max, Sum, Mean, <Array type>.AnyTrue, <Array type>.AnyFalse, <Array type>.AllTrue, <Array type>.AllFalse.

Component : wd260vm.dll