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instance method

Array#pack

(::string fmt, ?buffer: ::String?) -> ::String

pack(template, buffer: nil) → string

# File tmp/rubies/ruby-4.1.0-preview1/pack.rb, line 7
def pack(fmt, buffer: nil)
  Primitive.pack_pack(fmt, buffer)
end

Formats each element in self into a binary string; returns that string. See Packed Data.

Ruby version changes

4.1
- Array#pack accepts new formats R and r for unsigned and signed LEB128 encoded integers. [Feature #21785]
- Array#pack accepts new formats x! and @! to align the current offset to a byte boundary or to the ABI alignment of another directive. [Feature #22185]
3.3
- Array#pack now raises ArgumentError for unknown directives. [Bug #19150]

See also #one? #permutation #none? #pop also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0