Documentation

strings.hasPrefix() function

strings.hasPrefix() indicates if a string begins with a specified prefix.

Function type signature
(prefix: string, v: string) => bool
For more information, see Function type signatures.

Parameters

v

(Required) String value to search.

prefix

(Required) Prefix to search for.

Examples

Filter based on the presence of a prefix in a column value

import "sampledata"
import "strings"

sampledata.string()
    |> filter(fn: (r) => strings.hasPrefix(v: r._value, prefix: "smpl_5"))

View example input and ouput


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