instance method

StringScanner#scan_integer

scan_integer(base: 10)

ext/strscan/lib/strscan/strscan.rb View on GitHub ↗

# File tmp/rubies/ruby-4.0.0/ext/strscan/lib/strscan/strscan.rb, line 15
def scan_integer(base: 10)
  case base
  when 10
    scan_base10_integer
  when 16
    scan_base16_integer
  else
    raise ArgumentError, "Unsupported integer base: #{base.inspect}, expected 10 or 16"
  end
end

If base isn’t provided or is 10, then it is equivalent to calling scan with a ‘[+-]?\d+` pattern, and returns an Integer or nil.

If base is 16, then it is equivalent to calling scan with a ‘[+-]?(0x)?[0-9a-fA-F]+` pattern, and returns an Integer or nil.

The scanned string must be encoded with an ASCII compatible encoding, otherwise Encoding::CompatibilityError will be raised.

See also #scan_byte #scan_until #scan #size also in 4.1

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