Returns option summary list.
Parses command line arguments argv
in order. When a block is given, each non-option argument is yielded.
Returns the rest of argv
left unparsed.
Same as order
, but removes switches destructively. Non-option arguments remain in argv
.
Wrapper method for getopts.rb.
params = ARGV.getopts("ab:", "foo", "bar:", "zot:Z;zot option") # params["a"] = true # -a # params["b"] = "1" # -b1 # params["foo"] = "1" # --foo # params["bar"] = "x" # --bar x # params["zot"] = "z" # --zot Z
Returns the array of matches.
m = /(.)(.)(\d+)(\d)/.match("THX1138.") m.to_a #=> ["HX1138", "H", "X", "113", "8"]
Because to_a
is called when expanding *
variable, there’s a useful assignment shortcut for extracting matched fields. This is slightly slower than accessing the fields directly (as an intermediate array is generated).
all,f1,f2,f3 = * /(.)(.)(\d+)(\d)/.match("THX1138.") all #=> "HX1138" f1 #=> "H" f2 #=> "X" f3 #=> "113"
Returns the array of captures; equivalent to mtch.to_a[1..-1]
.
f1,f2,f3,f4 = /(.)(.)(\d+)(\d)/.match("THX1138.").captures f1 #=> "H" f2 #=> "X" f3 #=> "113" f4 #=> "8"
Returns the entire matched string.
m = /(.)(.)(\d+)(\d)/.match("THX1138.") m.to_s #=> "HX1138"
Returns a frozen copy of the string passed in to match
.
m = /(.)(.)(\d+)(\d)/.match("THX1138.") m.string #=> "THX1138."
This is a convenience method which is same as follows:
begin q = PrettyPrint.new(output, maxwidth, newline, &genspace) ... q.flush output end
This says “you can break a line here if necessary”, and a width
-column text sep
is inserted if a line is not broken at the 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.
Increases left margin after newline with indent
for line breaks added in the block.
Looks up the first IP address for name
.
Looks up all IP address for name
.
Looks up the first IP address for name
.
Looks up all IP address for name
.
Replaces the contents of the set with the contents of the given enumerable object and returns self.
set = Set[1, 'c', :s] #=> #<Set: {1, "c", :s}> set.replace([1, 2]) #=> #<Set: {1, 2}> set #=> #<Set: {1, 2}>
Converts the set to an array. The order of elements is uncertain.
Set[1, 2].to_a #=> [1, 2] Set[1, 'c', :s].to_a #=> [1, "c", :s]
Equivalent to Set#delete_if
, but returns nil if no changes were made. Returns an enumerator if no block is given.
Resets the internal state after modification to existing elements and returns self.
Elements will be reindexed and deduplicated.