Returns a new binding each time near TOPLEVEL_BINDING for runs that do not specify a binding.
Set an error (a protected method).
Return the appropriate error message in POSIX-defined format. If no error has occurred, returns nil
.
Creates a new ipaddr containing the given network byte ordered string form of an IP address.
Creates a Range
object for the network address.
Sets the date-time format.
Argument datetime_format
should be either of these:
A string suitable for use as a format for method Time#strftime
.
nil
: the logger uses '%Y-%m-%dT%H:%M:%S.%6N'
.
Returns the date-time format; see datetime_format=
.
Returns the usable width for out
. As the width of out
:
If out
is assigned to a tty device, its width is used.
Otherwise, or it could not get the value, the COLUMN
environment variable is assumed to be set to the width.
If COLUMN
is not set to a non-zero number, 80 is assumed.
And finally, returns the above width value - 1.
This -1 is for Windows command prompt, which moves the cursor to the next line if it reaches the last column.
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; each key is a capture name; each value is its captured string or nil
:
m = /(?<foo>.)(.)(?<bar>.+)/.match("hoge") # => #<MatchData "hoge" foo:"h" bar:"ge"> m.named_captures # => {"foo"=>"h", "bar"=>"ge"} m = /(?<a>.)(?<b>.)/.match("01") # => #<MatchData "01" a:"0" b:"1"> m.named_captures #=> {"a" => "0", "b" => "1"} m = /(?<a>.)(?<b>.)?/.match("0") # => #<MatchData "0" a:"0" b:nil> m.named_captures #=> {"a" => "0", "b" => nil} m = /(?<a>.)(?<a>.)/.match("01") # => #<MatchData "01" a:"0" a:"1"> m.named_captures #=> {"a" => "1"}
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 of no named captures were defined:
m = /(\d{2}):(\d{2}):(\d{2})/.match("18:37:22") m.deconstruct_keys(nil) # => {}
Returns the substring of the target string from its beginning up to the first match in self
(that is, self[0]
); equivalent to regexp global variable $`
:
m = /(.)(.)(\d+)(\d)/.match("THX1138.") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.pre_match # => "T"
Related: MatchData#post_match
.
Returns the substring of the target string from the end of the first match in self
(that is, self[0]
) to the end of the string; equivalent to regexp global variable $'
:
m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.post_match # => ": The Movie"\
Related: MatchData.pre_match
.
This is similar to PrettyPrint::format
but the result has no breaks.
maxwidth
, newline
and genspace
are ignored.
The invocation of breakable
in the block doesn’t break a line and is treated as just an invocation of text
.
Returns the group most recently added to the stack.
Contrived example:
out = "" => "" q = PrettyPrint.new(out) => #<PrettyPrint:0x82f85c0 @output="", @maxwidth=79, @newline="\n", @genspace=#<Proc:0x82f8368@/home/vbatts/.rvm/rubies/ruby-head/lib/ruby/2.0.0/prettyprint.rb:82 (lambda)>, @output_width=0, @buffer_width=0, @buffer=[], @group_stack=[#<PrettyPrint::Group:0x82f8138 @depth=0, @breakables=[], @break=false>], @group_queue=#<PrettyPrint::GroupQueue:0x82fb7c0 @queue=[[#<PrettyPrint::Group:0x82f8138 @depth=0, @breakables=[], @break=false>]]>, @indent=0> q.group { q.text q.current_group.inspect q.text q.newline q.group(q.current_group.depth + 1) { q.text q.current_group.inspect q.text q.newline q.group(q.current_group.depth + 1) { q.text q.current_group.inspect q.text q.newline q.group(q.current_group.depth + 1) { q.text q.current_group.inspect q.text q.newline } } } } => 284 puts out #<PrettyPrint::Group:0x8354758 @depth=1, @breakables=[], @break=false> #<PrettyPrint::Group:0x8354550 @depth=2, @breakables=[], @break=false> #<PrettyPrint::Group:0x83541cc @depth=3, @breakables=[], @break=false> #<PrettyPrint::Group:0x8347e54 @depth=4, @breakables=[], @break=false>
This is similar to breakable
except the decision to break or not is determined individually.
Two fill_breakable
under a group may cause 4 results: (break,break), (break,non-break), (non-break,break), (non-break,non-break). This is different to breakable
because two breakable
under a group may cause 2 results: (break,break), (non-break,non-break).
The text sep
is inserted if a line is not broken at this point.
If sep
is not specified, “ ” is used.
If width
is not specified, sep.length
is used. You will have to specify this when sep
is a multibyte character, for example.
Iterates over all IP addresses for name
.
Iterates over all IP addresses for name
.
Returns true if the referenced object is still alive.