Writes the GC::Profiler.result to $stdout or the given IO object.
Is code a redirection status?
Is code a redirection status?
Returns true if obj responds to the given method. Private and protected methods are included in the search only if the optional second parameter evaluates to true.
If the method is not implemented, as Process.fork on Windows, File.lchmod on GNU/Linux, etc., false is returned.
If the method is not defined, respond_to_missing? method is called and the result is returned.
When the method name parameter is given as a string, the string is converted to a symbol.
Returns self.
If called on a subclass of String, converts the receiver to a String object.
Returns true if the named file is readable by the real user and group id of this process. See access(3).
If file_name is readable by others, returns an integer representing the file permission bits of file_name. Returns nil otherwise. The meaning of the bits is platform dependent; on Unix systems, see stat(2).
file_name can be an IO object.
File.world_readable?("/etc/passwd") #=> 420 m = File.world_readable?("/etc/passwd") sprintf("%o", m) #=> "644"
When this module is prepended in another, Ruby calls prepend_features in this module, passing it the receiving module in mod. Ruby’s default implementation is to overlay the constants, methods, and module variables of this module to mod if this module has not already been added to mod or one of its ancestors. See also Module#prepend.
Removes the definition of the given constant, returning that constant’s previous value. If that constant referred to a module, this will not change that module’s name and can lead to confusion.
Makes a list of existing constants deprecated.
Returns true if the given year is a leap year of the proleptic Gregorian calendar.
Date.gregorian_leap?(1900) #=> false Date.gregorian_leap?(2000) #=> true
IO.copy_stream copies src to dst. src and dst is either a filename or an IO-like object. IO-like object for src should have readpartial or read method. IO-like object for dst should have write method. (Specialized mechanisms, such as sendfile system call, may be used on appropriate situation.)
This method returns the number of bytes copied.
If optional arguments are not given, the start position of the copy is the beginning of the filename or the current file offset of the IO. The end position of the copy is the end of file.
If copy_length is given, No more than copy_length bytes are copied.
If src_offset is given, it specifies the start position of the copy.
When src_offset is specified and src is an IO, IO.copy_stream doesn’t move the current file offset.
Returns an Addrinfo object for remote address obtained by getpeername.
Note that addrinfo.protocol is filled by 0.
TCPSocket.open("www.ruby-lang.org", 80) {|s| p s.remote_address #=> #<Addrinfo: 221.186.184.68:80 TCP> } TCPServer.open("127.0.0.1", 1728) {|serv| c = TCPSocket.new("127.0.0.1", 1728) s = serv.accept p s.remote_address #=> #<Addrinfo: 127.0.0.1:36504 TCP> }
s.rest_size is equivalent to s.rest.size.
Stores the indicated separators for later use.
If auto-discovery was requested for @row_sep, this method will read ahead in the @io and try to find one. ARGF, STDIN, STDOUT, STDERR and any stream open for output only with a default @row_sep of $INPUT_RECORD_SEPARATOR ($/).
This method also establishes the quoting rules used for CSV output.
Returns a string containing the IP address representation in canonical form.
Creates a single-row matrix where the values of that row are as given in row.
Matrix.row_vector([4,5,6]) => 4 5 6
Creates a single-column matrix where the values of that column are as given in column.
Matrix.column_vector([4,5,6])
=> 4
5
6