Results for: "max_by"

Sets the mode for self to row mode (see Row Mode); returns self:

source = "Name,Value\nfoo,0\nbar,1\nbaz,2\n"
table = CSV.parse(source, headers: true)
table.mode # => :col_or_row
table1 = table.by_row!
table.mode # => :row
table1.equal?(table) # => true # Returned self

Checks if ios starts with a BOM, and then consumes it and sets the external encoding. Returns the result encoding if found, or nil. If ios is not binmode or its encoding has been set already, an exception will be raised.

File.write("bom.txt", "\u{FEFF}abc")
ios = File.open("bom.txt", "rb")
ios.set_encoding_by_bom    #=>  #<Encoding:UTF-8>

File.write("nobom.txt", "abc")
ios = File.open("nobom.txt", "rb")
ios.set_encoding_by_bom    #=>  nil

Removes the gemspec matching full_name from the dependency list

Find the best specification matching a name and requirements. Raises if the dependency doesn’t resolve to a valid specification.

Return the best specification that contains the file matching path.

Returns a duplicate of self, in mixed mode (see Mixed Mode):

source = "Name,Value\nfoo,0\nbar,1\nbaz,2\n"
table = CSV.parse(source, headers: true).by_col!
table.mode # => :col
dup_table = table.by_col_or_row
dup_table.mode # => :col_or_row
dup_table.equal?(table) # => false # It's a dup

This may be used to chain method calls without changing the mode (but also will affect performance and memory usage):

dup_table.by_col_or_row['Name']

Also note that changes to the duplicate table will not affect the original.

Sets the mode for self to mixed mode (see Mixed Mode); returns self:

source = "Name,Value\nfoo,0\nbar,1\nbaz,2\n"
table = CSV.parse(source, headers: true).by_col!
table.mode # => :col
table1 = table.by_col_or_row!
table.mode # => :col_or_row
table1.equal?(table) # => true # Returned self

Remove everything in the DependencyList that matches but doesn’t satisfy items in dependencies (a hash of gem names to arrays of dependencies).

Returns every spec that matches name and optional requirements.

Return the best specification that contains the file matching path amongst the specs that are not activated.

Returns every spec that has the given full_name

mkmf.rb is used by Ruby C extensions to generate a Makefile which will correctly compile and link the C extension to Ruby and a third-party library.

Raised when a gem dependencies file specifies a ruby version that does not match the current version.

The command manager registers and installs all the individual sub-commands supported by the gem command.

Extra commands can be provided by writing a rubygems_plugin.rb file in an installed gem. You should register your command against the Gem::CommandManager instance, like this:

# file rubygems_plugin.rb
require 'rubygems/command_manager'

Gem::CommandManager.instance.register_command :edit

You should put the implementation of your command in rubygems/commands.

# file rubygems/commands/edit_command.rb
class Gem::Commands::EditCommand < Gem::Command
  # ...
end

See Gem::Command for instructions on writing gem commands.

Raised when encountering Ruby code with an invalid syntax.

eval("1+1=2")

raises the exception:

SyntaxError: (eval):1: syntax error, unexpected '=', expecting $end