Filter

Array

// Even Odd example
let arr = [1, 2, 3, 4]
let evens = arr.filter { $0 % 2 == 0 }
print(evens)

print("\n Using Filter")
let filterDynamicRecordFields = arrFields.filter { $0.hasDynamicRecordId }
print(filterDynamicRecordFields)

NS Predicate

let thisSection = 1
let thisPredicate = NSPredicate(format: "sectionNumber == \(thisSection)")

NSPredicate | SO

let dataSource = [
    "Domain CheckService",
    "IMEI check",
    "Compliant about service provider",
    "Compliant about TRA",
    "Enquires",
    "Suggestion",
    "SMS Spam",
    "Poor Coverage",
    "Help Salim"
]
let searchString = "Enq"
let predicate = NSPredicate(format: "SELF contains %@", searchString)
let searchDataSource = dataSource
.filter { predicate.evaluate(with: $0) }

predicate.evaluateWithObject

You will get (playground)

comparing decimal-integer vs double?

ibn | definition decimal-integer

BANDWIDTH
The value is a decimal-integer of bits per second. It represents the peak segment bit rate of the Variant Stream.

hls rfc

SELF
Literals in Predicates

The %@ will be instantly recognizable to anyone who has used Objective-C before, and it means "place the contents of a variable here, whatever data type it is." In our case, the value of filter will go in there, and will do so safely regardless of its value.

HWS | NSpredicate

Multiple arguments

var predicate = NSPredicate(format: "key1 = %@ AND key2 = %@", value1, value2)

Compound Predicate for multiple predicates