Rewinds the underlying IO object and resets CSV’s lineno() counter.
Forms the remaining rows from self into:
A CSV::Table object, if headers are in use.
An Array of Arrays, otherwise.
The data source must be opened for reading.
Without headers:
string = "foo,0\nbar,1\nbaz,2\n" path = 't.csv' File.write(path, string) csv = CSV.open(path) csv.read # => [["foo", "0"], ["bar", "1"], ["baz", "2"]]
With headers:
string = "Name,Value\nfoo,0\nbar,1\nbaz,2\n" path = 't.csv' File.write(path, string) csv = CSV.open(path, headers: true) csv.read # => #<CSV::Table mode:col_or_row row_count:4>
Raises an exception if the source is not opened for reading:
string = "foo,0\nbar,1\nbaz,2\n" csv = CSV.new(string) csv.close # Raises IOError (not opened for reading) csv.read
Returns the IO used as stdout. Defaults to STDOUT
Sets the IO used as stdout. Defaults to STDOUT
This method must be overridden by subclasses and should return the object method calls are being delegated to.
This method must be overridden by subclasses and change the object delegate to obj.
:method: freeze Freeze both the object returned by _getobj_ and self.
Returns the current object method calls are being delegated to.
Changes the delegate object to obj.
It’s important to note that this does not cause SimpleDelegator’s methods to change. Because of this, you probably only want to change delegation to objects of the same type as the original delegate.
Here’s an example of changing the delegation object.
names = SimpleDelegator.new(%w{James Edward Gray II}) puts names[1] # => Edward names.__setobj__(%w{Gavin Sinclair}) puts names[1] # => Sinclair
Executes the generated ERB code to produce a completed template, returning the results of that code. (See ERB::new for details on how this process can be affected by safe_level.)
b accepts a Binding object which is used to set the context of code evaluation.
Set the handling of the ordering of options and arguments. A RuntimeError is raised if option processing has already started.
The supplied value must be a member of GetoptLong::ORDERINGS. It alters the processing of options as follows:
REQUIRE_ORDER :
Options are required to occur before non-options.
Processing of options ends as soon as a word is encountered that has not been preceded by an appropriate option flag.
For example, if -a and -b are options which do not take arguments, parsing command line arguments of ‘-a one -b two’ would result in ‘one’, ‘-b’, ‘two’ being left in ARGV, and only (‘-a’, ”) being processed as an option/arg pair.
This is the default ordering, if the environment variable POSIXLY_CORRECT is set. (This is for compatibility with GNU getopt_long.)
PERMUTE :
Options can occur anywhere in the command line parsed. This is the default behavior.
Every sequence of words which can be interpreted as an option (with or without argument) is treated as an option; non-option words are skipped.
For example, if -a does not require an argument and -b optionally takes an argument, parsing ‘-a one -b two three’ would result in (‘-a’,”) and (‘-b’, ‘two’) being processed as option/arg pairs, and ‘one’,‘three’ being left in ARGV.
If the ordering is set to PERMUTE but the environment variable POSIXLY_CORRECT is set, REQUIRE_ORDER is used instead. This is for compatibility with GNU getopt_long.
RETURN_IN_ORDER :
All words on the command line are processed as options. Words not preceded by a short or long option flag are passed as arguments with an option of ” (empty string).
For example, if -a requires an argument but -b does not, a command line of ‘-a one -b two three’ would result in option/arg pairs of (‘-a’, ‘one’) (‘-b’, ”), (”, ‘two’), (”, ‘three’) being processed.
Convert a network byte ordered string form of an IP address into human readable form.
Returns the integer representation of the ipaddr.
Returns a string containing the IP address representation.
Returns a network byte ordered string form of the IP address.
Returns a string for DNS reverse lookup. It returns a string in RFC3172 form for an IPv6 address.
Returns the prefix length in bits for the ipaddr.
Sets the prefix length in bits
Returns the bound receiver of the binding object.
Returns true iff the current severity level allows for the printing of ERROR messages.