hex.string() function

hex.string() converts a Flux basic type to a hexadecimal string.

The function is similar to string(), but encodes int, uint, and bytes types to hexadecimal lowercase characters.

Function type signature

(v: A) => string

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Parameters

v

({{< req >}}) Value to convert.

Examples

• Convert integer to hexadecimal string
• Convert a boolean to a hexadecimal string value
• Convert a duration to a hexadecimal string value
• Convert a time to a hexadecimal string value
• Convert an integer to a hexadecimal string value
• Convert a uinteger to a hexadecimal string value
• Convert a float to a hexadecimal string value
• Convert bytes to a hexadecimal string value
• Convert all values in a column to hexadecimal string values

Convert integer to hexadecimal string

import "contrib/bonitoo-io/hex"

hex.string(v: 1234)// Returns 4d2

Convert a boolean to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: true)// Returns "true"

Convert a duration to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: 1m)// Returns "1m"

Convert a time to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: 2021-01-01T00:00:00Z)// Returns "2021-01-01T00:00:00Z"

Convert an integer to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: 1234)// Returns "4d2"

Convert a uinteger to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: uint(v: 5678))// Returns "162e"

Convert a float to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: 10.12)// Returns "10.12"

Convert bytes to a hexadecimal string value

import "contrib/bonitoo-io/hex"

hex.string(v: bytes(v: "Hello world!"))// Returns "48656c6c6f20776f726c6421"

Convert all values in a column to hexadecimal string values

Use map() to iterate over and update all input rows. Use hex.string() to update the value of a column. The following example uses data provided by the sampledata package.

import "sampledata"
import "contrib/bonitoo-io/hex"

data =
    sampledata.int()
        |> map(fn: (r) => ({r with _value: r._value * 1000}))

data
    |> map(fn: (r) => ({r with _value: hex.string(v: r.foo)}))

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Input data

Output data

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