Results for: "OptionParser"

returns a charset parameter in Content-Type field. It is downcased for canonicalization.

If charset parameter is not given but a block is given, the block is called and its result is returned. It can be used to guess charset.

If charset parameter and block is not given, nil is returned except text type. In that case, “utf-8” is returned as defined by RFC6838 4.2.1

Gets various OpenSSL options.

Sets various OpenSSL options.

Returns a new Array that is the union of self and all given Arrays other_arrays; duplicates are removed; order is preserved; items are compared using eql?:

[0, 1, 2, 3].union([4, 5], [6, 7]) # => [0, 1, 2, 3, 4, 5, 6, 7]
[0, 1, 1].union([2, 1], [3, 1]) # => [0, 1, 2, 3]
[0, 1, 2, 3].union([3, 2], [1, 0]) # => [0, 1, 2, 3]

Returns a copy of self if no arguments given.

Related: Array#|.

Inserts given objects before or after the element at Integer index offset; returns self.

When index is non-negative, inserts all given objects before the element at offset index:

a = [:foo, 'bar', 2]
a.insert(1, :bat, :bam) # => [:foo, :bat, :bam, "bar", 2]

Extends the array if index is beyond the array (index >= self.size):

a = [:foo, 'bar', 2]
a.insert(5, :bat, :bam)
a # => [:foo, "bar", 2, nil, nil, :bat, :bam]

Does nothing if no objects given:

a = [:foo, 'bar', 2]
a.insert(1)
a.insert(50)
a.insert(-50)
a # => [:foo, "bar", 2]

When index is negative, inserts all given objects after the element at offset index+self.size:

a = [:foo, 'bar', 2]
a.insert(-2, :bat, :bam)
a # => [:foo, "bar", :bat, :bam, 2]

Returns an element from self selected by a binary search.

See Binary Searching.

Returns self if self is not a zero value, nil otherwise; uses method zero? for the evaluation.

The returned self allows the method to be chained:

a = %w[z Bb bB bb BB a aA Aa AA A]
a.sort {|a, b| (a.downcase <=> b.downcase).nonzero? || a <=> b }
# => ["A", "a", "AA", "Aa", "aA", "BB", "Bb", "bB", "bb", "z"]

Of the Core and Standard Library classes, Integer, Float, Rational, and Complex use this implementation.

Extracts data from self, forming objects that become the elements of a new array; returns that array. See Packed Data.

Like String#unpack, but unpacks and returns only the first extracted object. See Packed Data.

Inserts the given other_string into self; returns self.

If the Integer index is positive, inserts other_string at offset index:

'foo'.insert(1, 'bar') # => "fbaroo"

If the Integer index is negative, counts backward from the end of self and inserts other_string at offset index+1 (that is, after self[index]):

'foo'.insert(-2, 'bar') # => "fobaro"

Returns an array of the characters in self:

'hello'.chars     # => ["h", "e", "l", "l", "o"]
'тест'.chars      # => ["т", "е", "с", "т"]
'こんにちは'.chars # => ["こ", "ん", "に", "ち", "は"]

Checks the compatibility of two objects.

If the objects are both strings they are compatible when they are concatenatable. The encoding of the concatenated string will be returned if they are compatible, nil if they are not.

Encoding.compatible?("\xa1".force_encoding("iso-8859-1"), "b")
#=> #<Encoding:ISO-8859-1>

Encoding.compatible?(
  "\xa1".force_encoding("iso-8859-1"),
  "\xa1\xa1".force_encoding("euc-jp"))
#=> nil

If the objects are non-strings their encodings are compatible when they have an encoding and:

• Either encoding is US-ASCII compatible

• One of the encodings is a 7-bit encoding

Returns the number of decimal digits in self:

BigDecimal("0").precision         # => 0
BigDecimal("1").precision         # => 1
BigDecimal("1.1").precision       # => 2
BigDecimal("3.1415").precision    # => 5
BigDecimal("-1e20").precision     # => 21
BigDecimal("1e-20").precision     # => 20
BigDecimal("Infinity").precision  # => 0
BigDecimal("-Infinity").precision # => 0
BigDecimal("NaN").precision       # => 0

Returns self if the value is non-zero, nil otherwise.

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).

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 the second in range (0..59):

DateTime.new(2001, 2, 3, 4, 5, 6).sec # => 6

Date#second is an alias for Date#sec.

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:

%a

The abbreviated weekday name (“Sun”)

%A

The full weekday name (“Sunday”)

%b

The abbreviated month name (“Jan”)

%B

The full month name (“January”)

%c

The preferred local date and time representation

%C

Century (20 in 2009)

%d

Day of the month (01..31)

%D

Date (%m/%d/%y)

%e

Day of the month, blank-padded ( 1..31)

%F

Equivalent to %Y-%m-%d (the ISO 8601 date format)

%g

The last two digits of the commercial year

%G

The week-based year according to ISO-8601 (week 1 starts on Monday and includes January 4)

%h

Equivalent to %b

%H

Hour of the day, 24-hour clock (00..23)

%I

Hour of the day, 12-hour clock (01..12)

%j

Day of the year (001..366)

%k

hour, 24-hour clock, blank-padded ( 0..23)

%l

hour, 12-hour clock, blank-padded ( 0..12)

%L

Millisecond of the second (000..999)

%m

Month of the year (01..12)

%M

Minute of the hour (00..59)

%n

Newline (n)

%N

Fractional seconds digits

%p

Meridian indicator (“AM” or “PM”)

%P

Meridian indicator (“am” or “pm”)

%r

time, 12-hour (same as %I:%M:%S %p)

%R

time, 24-hour (%H:%M)

%s

Number of seconds since 1970-01-01 00:00:00 UTC.

%S

Second of the minute (00..60)

%t

Tab character (t)

%T

time, 24-hour (%H:%M:%S)

%u

Day of the week as a decimal, Monday being 1. (1..7)

%U

Week number of the current year, starting with the first Sunday as the first day of the first week (00..53)

%v

VMS date (%e-%b-%Y)

%V

Week number of year according to ISO 8601 (01..53)

%W

Week number of the current year, starting with the first Monday as the first day of the first week (00..53)

%w

Day of the week (Sunday is 0, 0..6)

%x

Preferred representation for the date alone, no time

%X

Preferred representation for the time alone, no date

%y

Year without a century (00..99)

%Y

Year which may include century, if provided

%z

Time zone as hour offset from UTC (e.g. +0900)

%Z

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 pathname configuration variable using fpathconf().

name should be a constant under Etc which begins with PC_.

The return value is an integer or nil. nil means indefinite limit. (fpathconf() returns -1 but errno is not set.)

require 'etc'
IO.pipe {|r, w|
  p w.pathconf(Etc::PC_PIPE_BUF) #=> 4096
}