Results for: "String#[]"

Element Assignment — Sets the element at index, or replaces a subarray from the start index for length elements, or replaces a subarray specified by the range of indices.

If indices are greater than the current capacity of the array, the array grows automatically. Elements are inserted into the array at start if length is zero.

Negative indices will count backward from the end of the array. For start and range cases the starting index is just before an element.

An IndexError is raised if a negative index points past the beginning of the array.

See also Array#push, and Array#unshift.

a = Array.new
a[4] = "4";                 #=> [nil, nil, nil, nil, "4"]
a[0, 3] = [ 'a', 'b', 'c' ] #=> ["a", "b", "c", nil, "4"]
a[1..2] = [ 1, 2 ]          #=> ["a", 1, 2, nil, "4"]
a[0, 2] = "?"               #=> ["?", 2, nil, "4"]
a[0..2] = "A"               #=> ["A", "4"]
a[-1]   = "Z"               #=> ["A", "Z"]
a[1..-1] = nil              #=> ["A", nil]
a[1..-1] = []               #=> ["A"]
a[0, 0] = [ 1, 2 ]          #=> [1, 2, "A"]
a[3, 0] = "B"               #=> [1, 2, "A", "B"]

Stores the specified string value in the database, indexed via the string key provided.

Attribute Assignment—Sets the value of the given struct member or the member at the given index. Raises NameError if the member does not exist and IndexError if the index is out of range.

Customer = Struct.new(:name, :address, :zip)
joe = Customer.new("Joe Smith", "123 Maple, Anytown NC", 12345)

joe["name"] = "Luke"
joe[:zip]   = "90210"

joe.name   #=> "Luke"
joe.zip    #=> "90210"

Associates the value value with the specified key.

Sets the value of an attribute.

require "ostruct"
person = OpenStruct.new("name" => "John Smith", "age" => 70)
person[:age] = 42   # equivalent to person.age = 42
person.age          # => 42

Stores a new value in the database with the given key as an index.

If the key already exists, this will update the value associated with the key.

Returns the given value.

Sets the value to WIN32OLE object specified by a1, a2, …

dict = WIN32OLE.new('Scripting.Dictionary')
dict.add('ruby', 'RUBY')
dict['ruby'] = 'Ruby'
puts dict['ruby'] # => 'Ruby'

Remark: You can not use this method to set the property value.

excel = WIN32OLE.new('Excel.Application')
# excel['Visible'] = true # This is error !!!
excel.Visible = true # You should to use this style to set the property.

Set the element of WIN32OLE_VARIANT object(OLE array) to val. This method is available only when the variant type of WIN32OLE_VARIANT object is VT_ARRAY.

REMARK:

The all indices should be 0 or natural number and
lower than or equal to max indices.
(This point is different with Ruby Array indices.)

obj = WIN32OLE_VARIANT.new([[1,2,3],[4,5,6]])
obj[0,0] = 7
obj[1,0] = 8
p obj.value # => [[7,2,3], [8,5,6]]
obj[2,0] = 9 # => WIN32OLERuntimeError
obj[0, -1] = 9 # => WIN32OLERuntimeError

Element Assignment

Associates the value given by value with the key given by key.

h = { "a" => 100, "b" => 200 }
h["a"] = 9
h["c"] = 4
h   #=> {"a"=>9, "b"=>200, "c"=>4}
h.store("d", 42) #=> 42
h   #=> {"a"=>9, "b"=>200, "c"=>4, "d"=>42}

key should not have its value changed while it is in use as a key (an unfrozen String passed as a key will be duplicated and frozen).

a = "a"
b = "b".freeze
h = { a => 100, b => 200 }
h.key(100).equal? a #=> false
h.key(200).equal? b #=> true

Sets the environment variable name to value. If the value given is nil the environment variable is deleted. name must be a string.

Stores an individual Ruby object or a hierarchy of Ruby objects in the data store file under the root name. Assigning to a name already in the data store clobbers the old data.

Example:

require "pstore"

store = PStore.new("data_file.pstore")
store.transaction do  # begin transaction
  # load some data into the store...
  store[:single_object] = "My data..."
  store[:obj_hierarchy] = { "Kev Jackson" => ["rational.rb", "pstore.rb"],
                            "James Gray"  => ["erb.rb", "pstore.rb"] }
end                   # commit changes to data store file

WARNING: This method is only valid in a PStore#transaction and it cannot be read-only. It will raise PStore::Error if called at any other time.

Attribute Assignment—Sets or creates the value of a fiber-local variable, using either a symbol or a string.

See also Thread#[].

For thread-local variables, please see thread_variable_set and thread_variable_get.

Changes underlying String object, the subject of IO.

Changes the string being scanned to str and resets the scanner. Returns str.

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

Adds a post-installs hook that will be passed a Gem::DependencyInstaller and a list of installed specifications when Gem::DependencyInstaller#install is complete