bytes_starts-with.md

title	categories	version	bytes	usage	feature
bytes starts-with	bytes	0.93.0	Check if bytes starts with a pattern.	Check if bytes starts with a pattern.	default

bytes starts-with for bytes

Check if bytes starts with a pattern.

Signature

> bytes starts-with {flags} (pattern) ...rest

Parameters

• pattern: The pattern to match.
• ...rest: For a data structure input, check if bytes at the given cell paths start with the pattern.

Input/output types:

input	output
binary	bool
record	record
table	table

Examples

Checks if binary starts with 0x[1F FF AA]

> 0x[1F FF AA AA] | bytes starts-with 0x[1F FF AA]
true

Checks if binary starts with 0x[1F]

> 0x[1F FF AA AA] | bytes starts-with 0x[1F]
true

Checks if binary starts with 0x[1F]

> 0x[1F FF AA AA] | bytes starts-with 0x[11]
false