Returns the Base64-encoded version of bin
. This method complies with RFC 4648. No line feeds are added.
Returns the Base64-decoded version of str
. This method complies with RFC 4648. ArgumentError
is raised if str
is incorrectly padded or contains non-alphabet characters. Note that CR or LF are also rejected.
Returns help string of OLE method. If the help string is not found, then the method returns nil.
tobj = WIN32OLE_TYPE.new('Microsoft Internet Controls', 'IWebBrowser') method = WIN32OLE_METHOD.new(tobj, 'Navigate') puts method.helpstring # => Navigates to a URL or file.
Returns help string.
tobj = WIN32OLE_TYPE.new('Microsoft Internet Controls', 'IWebBrowser') puts tobj.helpstring # => Web Browser interface
Returns an array containing all of the filenames in the given directory. Will raise a SystemCallError
if the named directory doesn’t exist.
The optional encoding keyword argument specifies the encoding of the directory. If not specified, the filesystem encoding is used.
Dir.entries("testdir") #=> [".", "..", "config.h", "main.rb"]
Returns a hash of values parsed from string
according to the given format
:
Date._strptime('2001-02-03', '%Y-%m-%d') # => {:year=>2001, :mon=>2, :mday=>3}
For other formats, see Formats for Dates and Times. (Unlike Date.strftime
, does not support flags and width.)
See also strptime(3).
Related: Date.strptime
(returns a Date object).
Returns a new Date object with values parsed from string
, according to the given format
:
Date.strptime('2001-02-03', '%Y-%m-%d') # => #<Date: 2001-02-03> Date.strptime('03-02-2001', '%d-%m-%Y') # => #<Date: 2001-02-03> Date.strptime('2001-034', '%Y-%j') # => #<Date: 2001-02-03> Date.strptime('2001-W05-6', '%G-W%V-%u') # => #<Date: 2001-02-03> Date.strptime('2001 04 6', '%Y %U %w') # => #<Date: 2001-02-03> Date.strptime('2001 05 6', '%Y %W %u') # => #<Date: 2001-02-03> Date.strptime('sat3feb01', '%a%d%b%y') # => #<Date: 2001-02-03>
For other formats, see Formats for Dates and Times. (Unlike Date.strftime
, does not support flags and width.)
See argument start.
See also strptime(3).
Related: Date._strptime
(returns a hash).
Returns a string representation of the date in self
, formatted according the given format
:
Date.new(2001, 2, 3).strftime # => "2001-02-03"
For other formats, see Formats for Dates and Times.
Parses the given representation of date and time with the given template, and returns a hash of parsed elements. _strptime does not support specification of flags and width unlike strftime.
See also strptime(3) and strftime
.
Parses the given representation of date and time with the given template, and creates a DateTime
object. strptime does not support specification of flags and width unlike strftime.
DateTime.strptime('2001-02-03T04:05:06+07:00', '%Y-%m-%dT%H:%M:%S%z') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...> DateTime.strptime('03-02-2001 04:05:06 PM', '%d-%m-%Y %I:%M:%S %p') #=> #<DateTime: 2001-02-03T16:05:06+00:00 ...> DateTime.strptime('2001-W05-6T04:05:06+07:00', '%G-W%V-%uT%H:%M:%S%z') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...> DateTime.strptime('2001 04 6 04 05 06 +7', '%Y %U %w %H %M %S %z') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...> DateTime.strptime('2001 05 6 04 05 06 +7', '%Y %W %u %H %M %S %z') #=> #<DateTime: 2001-02-03T04:05:06+07:00 ...> DateTime.strptime('-1', '%s') #=> #<DateTime: 1969-12-31T23:59:59+00:00 ...> DateTime.strptime('-1000', '%Q') #=> #<DateTime: 1969-12-31T23:59:59+00:00 ...> DateTime.strptime('sat3feb014pm+7', '%a%d%b%y%H%p%z') #=> #<DateTime: 2001-02-03T16:00:00+07:00 ...>
See also strptime(3) and strftime
.
Returns a string representation of self
, formatted according the given +format:
DateTime.now.strftime # => "2022-07-01T11:03:19-05:00"
For other formats, see Formats for Dates and Times.
Works similar to parse
except that instead of using a heuristic to detect the format of the input string, you provide a second argument that describes the format of the string.
If a block is given, the year described in date
is converted by the block. For example:
Time.strptime(...) {|y| y < 100 ? (y >= 69 ? y + 1900 : y + 2000) : y}
Below is a list of the formatting options:
The abbreviated weekday name (“Sun”)
The full weekday name (“Sunday”)
The abbreviated month name (“Jan”)
The full month name (“January”)
The preferred local date and time representation
Century (20 in 2009)
Day of the month (01..31)
Date
(%m/%d/%y)
Day of the month, blank-padded ( 1..31)
Equivalent to %Y-%m-%d (the ISO 8601 date format)
The last two digits of the commercial year
The week-based year according to ISO-8601 (week 1 starts on Monday and includes January 4)
Equivalent to %b
Hour of the day, 24-hour clock (00..23)
Hour of the day, 12-hour clock (01..12)
Day of the year (001..366)
hour, 24-hour clock, blank-padded ( 0..23)
hour, 12-hour clock, blank-padded ( 0..12)
Millisecond of the second (000..999)
Month of the year (01..12)
Minute of the hour (00..59)
Newline (n)
Fractional seconds digits
Meridian indicator (“AM” or “PM”)
Meridian indicator (“am” or “pm”)
time, 12-hour (same as %I:%M:%S %p)
time, 24-hour (%H:%M)
Number of seconds since 1970-01-01 00:00:00 UTC.
Second of the minute (00..60)
Tab character (t)
time, 24-hour (%H:%M:%S)
Day of the week as a decimal, Monday being 1. (1..7)
Week number of the current year, starting with the first Sunday as the first day of the first week (00..53)
VMS date (%e-%b-%Y)
Week number of year according to ISO 8601 (01..53)
Week number of the current year, starting with the first Monday as the first day of the first week (00..53)
Day of the week (Sunday is 0, 0..6)
Preferred representation for the date alone, no time
Preferred representation for the time alone, no date
Year without a century (00..99)
Year which may include century, if provided
Time
zone as hour offset from UTC (e.g. +0900)
Time
zone name
Literal “%” character
date(1) (%a %b %e %H:%M:%S %Z %Y)
require 'time' Time.strptime("2000-10-31", "%Y-%m-%d") #=> 2000-10-31 00:00:00 -0500
You must require ‘time’ to use this method.
Returns a string representation of self
, formatted according to the given string format
. See Formats for Dates and Times.
Returns an array containing the elements in self
, if a finite collection; raises an exception otherwise.
(1..4).to_a # => [1, 2, 3, 4] (1...4).to_a # => [1, 2, 3] ('a'..'d').to_a # => ["a", "b", "c", "d"]
Range#entries
is an alias for Range#to_a
.
Returns the values in self
as an array:
Customer = Struct.new(:name, :address, :zip) joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345) joe.to_a # => ["Joe Smith", "123 Maple, Anytown NC", 12345]
Struct#values
and Struct#deconstruct
are aliases for Struct#to_a
.
Related: members
.
Return the entries (files and subdirectories) in the directory, each as a Pathname
object.
The results contains just the names in the directory, without any trailing slashes or recursive look-up.
pp Pathname.new('/usr/local').entries #=> [#<Pathname:share>, # #<Pathname:lib>, # #<Pathname:..>, # #<Pathname:include>, # #<Pathname:etc>, # #<Pathname:bin>, # #<Pathname:man>, # #<Pathname:games>, # #<Pathname:.>, # #<Pathname:sbin>, # #<Pathname:src>]
The result may contain the current directory #<Pathname:.>
and the parent directory #<Pathname:..>
.
If you don’t want .
and ..
and want directories, consider Pathname#children
.
Returns the values in self
as an array, to use in pattern matching:
Measure = Data.define(:amount, :unit) distance = Measure[10, 'km'] distance.deconstruct #=> [10, "km"] # usage case distance in n, 'km' # calls #deconstruct underneath puts "It is #{n} 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(n, 'km') puts "It is #{n} kilometers away" # ... end
Returns the array of captures, which are all matches except m[0]
:
m = /(.)(.)(\d+)(\d)/.match("THX1138.") # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8"> m[0] # => "HX1138" m.captures # => ["H", "X", "113", "8"]
Related: MatchData.to_a
.
Returns the priority of thr. Default is inherited from the current thread which creating the new thread, or zero for the initial main thread; higher-priority thread will run more frequently than lower-priority threads (but lower-priority threads can also run).
This is just hint for Ruby thread scheduler. It may be ignored on some platform.
Thread.current.priority #=> 0
Sets the priority of thr to integer. Higher-priority threads will run more frequently than lower-priority threads (but lower-priority threads can also run).
This is just hint for Ruby thread scheduler. It may be ignored on some platform.
count1 = count2 = 0 a = Thread.new do loop { count1 += 1 } end a.priority = -1 b = Thread.new do loop { count2 += 1 } end b.priority = -2 sleep 1 #=> 1 count1 #=> 622504 count2 #=> 5832
Returns an array containing the items in self
:
(0..4).to_a # => [0, 1, 2, 3, 4]
Enumerable#entries
is an alias for Enumerable#to_a
.
Returns system configuration variable using confstr().
name should be a constant under Etc
which begins with CS_
.
The return value is a string or nil. nil means no configuration-defined value. (confstr() returns 0 but errno is not set.)
Etc.confstr(Etc::CS_PATH) #=> "/bin:/usr/bin" # GNU/Linux Etc.confstr(Etc::CS_GNU_LIBC_VERSION) #=> "glibc 2.18" Etc.confstr(Etc::CS_GNU_LIBPTHREAD_VERSION) #=> "NPTL 2.18"
Returns current status of GC stress mode.