Results for: "Array.new"

Called by the TupleSpace to check if the object is still alive.

Reset the expiry time according to sec_or_renewer.

nil

it is set to expire in the far future.

true

it has expired.

Numeric

it will expire in that many seconds.

Otherwise the argument refers to some kind of renewer object which will reset its expiry time.

Ensure path and path with extension are identical.

Returns true if URI is hierarchical.

Description

URI has components listed in order of decreasing significance from left to right, see RFC3986 tools.ietf.org/html/rfc3986 1.2.3.

Usage

require 'uri'

uri = URI.parse("http://my.example.com/")
uri.hierarchical?
#=> true
uri = URI.parse("mailto:joe@example.com")
uri.hierarchical?
#=> false

Checks if URI has a path. For URI::LDAP this will return false.

Set all the parameters.

Returns the fractional part of the day.

DateTime.new(2001,2,3,12).day_fraction    #=> (1/2)

This method is equivalent to d + n.

This method is equivalent to d >> (n * 12).

Date.new(2001,2,3).next_year      #=> #<Date: 2002-02-03 ...>
Date.new(2008,2,29).next_year     #=> #<Date: 2009-02-28 ...>
Date.new(2008,2,29).next_year(4)  #=> #<Date: 2012-02-29 ...>

See also Date#>>.

Returns the size of arguments of the method.

tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook')
method = WIN32OLE_METHOD.new(tobj, 'SaveAs')
puts method.size_params # => 11

Returns library name. If the method fails to access library name, WIN32OLERuntimeError is raised.

tlib = WIN32OLE_TYPELIB.new('Microsoft Excel 9.0 Object Library')
tlib.library_name # => Excel

Returns the data created by parsing the first line of string or io using the specified options.

• Argument string should be a String object; it will be put into a new StringIO object positioned at the beginning.

• Argument io should be an IO object that is:

  • Open for reading; on return, the IO object will be closed.

  • Positioned at the beginning. To position at the end, for appending, use method CSV.generate. For any other positioning, pass a preset StringIO object instead.

• Argument options: see Options for Parsing

Without Option headers

Without option headers, returns the first row as a new Array.

These examples assume prior execution of:

string = "foo,0\nbar,1\nbaz,2\n"
path = 't.csv'
File.write(path, string)

Parse the first line from a String object:

CSV.parse_line(string) # => ["foo", "0"]

Parse the first line from a File object:

File.open(path) do |file|
  CSV.parse_line(file) # => ["foo", "0"]
end # => ["foo", "0"]

Returns nil if the argument is an empty String:

CSV.parse_line('') # => nil

With Option headers

With {option headers}, returns the first row as a CSV::Row object.

These examples assume prior execution of:

string = "Name,Count\nfoo,0\nbar,1\nbaz,2\n"
path = 't.csv'
File.write(path, string)

Parse the first line from a String object:

CSV.parse_line(string, headers: true) # => #<CSV::Row "Name":"foo" "Count":"0">

Parse the first line from a File object:

File.open(path) do |file|
  CSV.parse_line(file, headers: true)
end # => #<CSV::Row "Name":"foo" "Count":"0">

Raises an exception if the argument is nil:

# Raises ArgumentError (Cannot parse nil as CSV):
CSV.parse_line(nil)

Returns the value that determines whether illegal input is to be handled; used for parsing; see {Option liberal_parsing}:

CSV.new('').liberal_parsing? # => false

Controls tracing of assignments to global variables. The parameter symbol identifies the variable (as either a string name or a symbol identifier). cmd (which may be a string or a Proc object) or block is executed whenever the variable is assigned. The block or Proc object receives the variable’s new value as a parameter. Also see Kernel::untrace_var.

trace_var :$_, proc {|v| puts "$_ is now '#{v}'" }
$_ = "hello"
$_ = ' there'

produces:

$_ is now 'hello'
$_ is now ' there'

Removes tracing for the specified command on the given global variable and returns nil. If no command is specified, removes all tracing for that variable and returns an array containing the commands actually removed.

Arguments obj and opts here are the same as arguments obj and opts in JSON.generate.

By default, generates JSON data without checking for circular references in obj (option max_nesting set to false, disabled).

Raises an exception if obj contains circular references:

a = []; b = []; a.push(b); b.push(a)
# Raises SystemStackError (stack level too deep):
JSON.fast_generate(a)

Arguments obj and opts here are the same as arguments obj and opts in JSON.generate.

Default options are:

{
  indent: '  ',   # Two spaces
  space: ' ',     # One space
  array_nl: "\n", # Newline
  object_nl: "\n" # Newline
}

Example:

obj = {foo: [:bar, :baz], bat: {bam: 0, bad: 1}}
json = JSON.pretty_generate(obj)
puts json

Output:

{
  "foo": [
    "bar",
    "baz"
  ],
  "bat": {
    "bam": 0,
    "bad": 1
  }
}

Returns garbage collector generation for the given object.

class B
  include ObjectSpace

  def foo
    trace_object_allocations do
      obj = Object.new
      p "Generation is #{allocation_generation(obj)}"
    end
  end
end

B.new.foo #=> "Generation is 3"

See ::trace_object_allocations for more information and examples.

Adds DidYouMean functionality to an error using a given spell checker

Returns whether or not the given entry point func can be found within lib. If func is nil, the main() entry point is used by default. If found, it adds the library to list of libraries to be used when linking your extension.

If headers are provided, it will include those header files as the header files it looks in when searching for func.

The real name of the library to be linked can be altered by --with-FOOlib configuration option.

Returns whether or not the entry point func can be found within the library lib in one of the paths specified, where paths is an array of strings. If func is nil , then the main() function is used as the entry point.

If lib is found, then the path it was found on is added to the list of library paths searched and linked against.

Returns whether or not the given framework can be found on your system. If found, a macro is passed as a preprocessor constant to the compiler using the framework name, in uppercase, prepended with HAVE_FRAMEWORK_.

For example, if have_framework('Ruby') returned true, then the HAVE_FRAMEWORK_RUBY preprocessor macro would be passed to the compiler.

If fw is a pair of the framework name and its header file name that header file is checked, instead of the normally used header file which is named same as the framework.