Results for: "module_function"

This method is defined for backward compatibility.

Scans the string until the pattern is matched. Returns the substring up to and including the end of the match, advancing the scan pointer to that location. If there is no match, nil is returned.

s = StringScanner.new("Fri Dec 12 1975 14:39")
s.scan_until(/1/)        # -> "Fri Dec 1"
s.pre_match              # -> "Fri Dec "
s.scan_until(/XYZ/)      # -> nil

Advances the scan pointer until pattern is matched and consumed. Returns the number of bytes advanced, or nil if no match was found.

Look ahead to match pattern, and advance the scan pointer to the end of the match. Return the number of characters advanced, or nil if the match was unsuccessful.

It’s similar to scan_until, but without returning the intervening string.

s = StringScanner.new("Fri Dec 12 1975 14:39")
s.skip_until /12/           # -> 10
s                           #

This returns the value that scan_until would return, without advancing the scan pointer. The match register is affected, though.

s = StringScanner.new("Fri Dec 12 1975 14:39")
s.check_until /12/          # -> "Fri Dec 12"
s.pos                       # -> 0
s.matched                   # -> 12

Mnemonic: it “checks” to see whether a scan_until will return a value.

Shows version string in packages if Version is defined.

pkgs

package list

Returns a hash of the name/value pairs, to use in pattern matching.

Measure = Data.define(:amount, :unit)

distance = Measure[10, 'km']
distance.deconstruct_keys(nil) #=> {:amount=>10, :unit=>"km"}
distance.deconstruct_keys([:amount]) #=> {:amount=>10}

# usage
case distance
in amount:, unit: 'km' # calls #deconstruct_keys underneath
  puts "It is #{amount} kilometers away"
else
  puts "Don't know how to handle it"
end
# prints "It is 10 kilometers away"

Or, with checking the class, too:

case distance
in Measure(amount:, unit: 'km')
  puts "It is #{amount} kilometers away"
# ...
end

Returns a hash of the named captures for the given names.

m = /(?<hours>\d{2}):(?<minutes>\d{2}):(?<seconds>\d{2})/.match("18:37:22")
m.deconstruct_keys([:hours, :minutes]) # => {:hours => "18", :minutes => "37"}
m.deconstruct_keys(nil) # => {:hours => "18", :minutes => "37", :seconds => "22"}

Returns an empty hash if no named captures were defined:

m = /(\d{2}):(\d{2}):(\d{2})/.match("18:37:22")
m.deconstruct_keys(nil) # => {}

Counts all objects grouped by type.

It returns a hash, such as:

{
  :TOTAL=>10000,
  :FREE=>3011,
  :T_OBJECT=>6,
  :T_CLASS=>404,
  # ...
}

The contents of the returned hash are implementation specific. It may be changed in future.

The keys starting with :T_ means live objects. For example, :T_ARRAY is the number of arrays. :FREE means object slots which is not used now. :TOTAL means sum of above.

If the optional argument result_hash is given, it is overwritten and returned. This is intended to avoid probe effect.

h = {}
ObjectSpace.count_objects(h)
puts h
# => { :TOTAL=>10000, :T_CLASS=>158280, :T_MODULE=>20672, :T_STRING=>527249 }

This method is only expected to work on C Ruby.

Returns the version of libyaml being used

Returns the string which represents the version of zlib library.

Try to activate a gem containing path. Returns true if activation succeeded or wasn’t needed because it was already activated. Returns false if it can’t find the path in a gem.

The version of the Marshal format for your Ruby.

A Gem::Version for the currently running Ruby.

A Gem::Version for the currently running RubyGems

Gets various OpenSSL options.

Sets various OpenSSL options.

The location of the token in the source.

Explanation of the conflict used by exceptions to print useful messages

Convert 64-bit FILETIME integer into Time object.

Convert Time object or Integer object into 64-bit FILETIME.

Returns the type library version.

tlib = WIN32OLE::TypeLib.new('Microsoft Excel 9.0 Object Library')
puts tlib.version #-> "1.3"

Returns the change time for stat (that is, the time directory information about the file was changed, not the file itself).

Note that on Windows (NTFS), returns creation time (birth time).

File.stat("testfile").ctime   #=> Wed Apr 09 08:53:14 CDT 2003