ID Generation Functions¶

Functions for generating and inspecting identifiers.

Summary¶

Function	Signature	Description
`nanoid`	`number? -> string`	Generate nanoid with an optional whole-number size from 0 through 1024 inclusive (integral floats accepted). Defaults to 21 characters; size 0 returns an empty string.
`ulid`	`-> string`	Generate ULID
`ulid_timestamp`	`string -> number`	Extract timestamp from ULID

Functions¶

nanoid¶

Generate nanoid with an optional whole-number size from 0 through 1024 inclusive (integral floats accepted). Defaults to 21 characters; size 0 returns an empty string.

Signature: number? -> string

Examples:

# Default 21 chars
nanoid() -> \"V1StGXR8_Z5jdHi6B-myT\"
# Custom length
nanoid(`10`) -> \"IRFa-VaY2b\"

ulid¶

Generate ULID

Signature: -> string

Examples:

# Generate ULID
ulid() -> \"01ARZ3NDEKTSV4RRFFQ69G5FAV\"
# Always 26 chars
length(ulid()) -> 26

ulid_timestamp¶

Extract timestamp from ULID

Signature: string -> number

Examples:

# Extract timestamp
ulid_timestamp('01ARZ3NDEKTSV4RRFFQ69G5FAV') -> 1469918176385
# Another ULID
ulid_timestamp('01BX5ZZKBKACTAV9WEVGEMMVRY') -> 1484581420610