Calls the associated block with the name of every file and directory listed as arguments, then recursively on their subdirectories, and so on.
Returns an enumerator if no block is given.
See the Find module documentation for an example.
Calls the associated block with the name of every file and directory listed as arguments, then recursively on their subdirectories, and so on.
Returns an enumerator if no block is given.
See the Find module documentation for an example.
Set the changed state of this object. Notifications will be sent only if the changed state is true.
state
Boolean indicating the changed state of this Observable.
Returns true if this object’s state has been changed since the last notify_observers call.
URI::join(str[, str, ...])
str
String(s) to work with, will be converted to RFC3986 URIs before merging.
Joins URIs.
require 'uri' URI.join("http://example.com/","main.rbx") # => #<URI::HTTP http://example.com/main.rbx> URI.join('http://example.com', 'foo') # => #<URI::HTTP http://example.com/foo> URI.join('http://example.com', '/foo', '/bar') # => #<URI::HTTP http://example.com/bar> URI.join('http://example.com', '/foo', 'bar') # => #<URI::HTTP http://example.com/bar> URI.join('http://example.com', '/foo/', 'bar') # => #<URI::HTTP http://example.com/foo/bar>
URI::extract(str[, schemes][,&blk])
Extracts URIs from a string. If block given, iterates through all matched URIs. Returns nil if block given or array with matches.
require "uri" URI.extract("text here http://foo.example.org/bla and here mailto:test@example.com and here also.") # => ["http://foo.example.com/bla", "mailto:test@example.com"]
Open3.pipeline_r starts a list of commands as a pipeline with a pipe which connects to stdout of the last command.
Open3.pipeline_r(cmd1, cmd2, ... [, opts]) {|last_stdout, wait_threads|
...
}
last_stdout, wait_threads = Open3.pipeline_r(cmd1, cmd2, ... [, opts])
...
last_stdout.close
Each cmd is a string or an array. If it is an array, the elements are passed to Process.spawn.
cmd: commandline command line string which is passed to a shell [env, commandline, opts] command line string which is passed to a shell [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) Note that env and opts are optional, as for Process.spawn.
Example:
Open3.pipeline_r("zcat /var/log/apache2/access.log.*.gz",
[{"LANG"=>"C"}, "grep", "GET /favicon.ico"],
"logresolve") {|o, ts|
o.each_line {|line|
...
}
}
Open3.pipeline_r("yes", "head -10") {|o, ts|
p o.read #=> "y\ny\ny\ny\ny\ny\ny\ny\ny\ny\n"
p ts[0].value #=> #<Process::Status: pid 24910 SIGPIPE (signal 13)>
p ts[1].value #=> #<Process::Status: pid 24913 exit 0>
}
Open3.pipeline_r starts a list of commands as a pipeline with a pipe which connects to stdout of the last command.
Open3.pipeline_r(cmd1, cmd2, ... [, opts]) {|last_stdout, wait_threads|
...
}
last_stdout, wait_threads = Open3.pipeline_r(cmd1, cmd2, ... [, opts])
...
last_stdout.close
Each cmd is a string or an array. If it is an array, the elements are passed to Process.spawn.
cmd: commandline command line string which is passed to a shell [env, commandline, opts] command line string which is passed to a shell [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) Note that env and opts are optional, as for Process.spawn.
Example:
Open3.pipeline_r("zcat /var/log/apache2/access.log.*.gz",
[{"LANG"=>"C"}, "grep", "GET /favicon.ico"],
"logresolve") {|o, ts|
o.each_line {|line|
...
}
}
Open3.pipeline_r("yes", "head -10") {|o, ts|
p o.read #=> "y\ny\ny\ny\ny\ny\ny\ny\ny\ny\n"
p ts[0].value #=> #<Process::Status: pid 24910 SIGPIPE (signal 13)>
p ts[1].value #=> #<Process::Status: pid 24913 exit 0>
}
Open3.pipeline_w starts a list of commands as a pipeline with a pipe which connects to stdin of the first command.
Open3.pipeline_w(cmd1, cmd2, ... [, opts]) {|first_stdin, wait_threads|
...
}
first_stdin, wait_threads = Open3.pipeline_w(cmd1, cmd2, ... [, opts])
...
first_stdin.close
Each cmd is a string or an array. If it is an array, the elements are passed to Process.spawn.
cmd: commandline command line string which is passed to a shell [env, commandline, opts] command line string which is passed to a shell [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) Note that env and opts are optional, as for Process.spawn.
Example:
Open3.pipeline_w("bzip2 -c", :out=>"/tmp/hello.bz2") {|i, ts| i.puts "hello" }
Open3.pipeline_w starts a list of commands as a pipeline with a pipe which connects to stdin of the first command.
Open3.pipeline_w(cmd1, cmd2, ... [, opts]) {|first_stdin, wait_threads|
...
}
first_stdin, wait_threads = Open3.pipeline_w(cmd1, cmd2, ... [, opts])
...
first_stdin.close
Each cmd is a string or an array. If it is an array, the elements are passed to Process.spawn.
cmd: commandline command line string which is passed to a shell [env, commandline, opts] command line string which is passed to a shell [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) Note that env and opts are optional, as for Process.spawn.
Example:
Open3.pipeline_w("bzip2 -c", :out=>"/tmp/hello.bz2") {|i, ts| i.puts "hello" }
Open3.pipeline starts a list of commands as a pipeline. It waits for the completion of the commands. No pipes are created for stdin of the first command and stdout of the last command.
status_list = Open3.pipeline(cmd1, cmd2, ... [, opts])
Each cmd is a string or an array. If it is an array, the elements are passed to Process.spawn.
cmd: commandline command line string which is passed to a shell [env, commandline, opts] command line string which is passed to a shell [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) Note that env and opts are optional, as Process.spawn.
Example:
fname = "/usr/share/man/man1/ruby.1.gz" p Open3.pipeline(["zcat", fname], "nroff -man", "less") #=> [#<Process::Status: pid 11817 exit 0>, # #<Process::Status: pid 11820 exit 0>, # #<Process::Status: pid 11828 exit 0>] fname = "/usr/share/man/man1/ls.1.gz" Open3.pipeline(["zcat", fname], "nroff -man", "colcrt") # convert PDF to PS and send to a printer by lpr pdf_file = "paper.pdf" printer = "printer-name" Open3.pipeline(["pdftops", pdf_file, "-"], ["lpr", "-P#{printer}"]) # count lines Open3.pipeline("sort", "uniq -c", :in=>"names.txt", :out=>"count") # cyclic pipeline r,w = IO.pipe w.print "ibase=14\n10\n" Open3.pipeline("bc", "tee /dev/tty", :in=>r, :out=>w) #=> 14 # 18 # 22 # 30 # 42 # 58 # 78 # 106 # 202
Open3.pipeline starts a list of commands as a pipeline. It waits for the completion of the commands. No pipes are created for stdin of the first command and stdout of the last command.
status_list = Open3.pipeline(cmd1, cmd2, ... [, opts])
Each cmd is a string or an array. If it is an array, the elements are passed to Process.spawn.
cmd: commandline command line string which is passed to a shell [env, commandline, opts] command line string which is passed to a shell [env, cmdname, arg1, ..., opts] command name and one or more arguments (no shell) [env, [cmdname, argv0], arg1, ..., opts] command name and arguments including argv[0] (no shell) Note that env and opts are optional, as Process.spawn.
Example:
fname = "/usr/share/man/man1/ruby.1.gz" p Open3.pipeline(["zcat", fname], "nroff -man", "less") #=> [#<Process::Status: pid 11817 exit 0>, # #<Process::Status: pid 11820 exit 0>, # #<Process::Status: pid 11828 exit 0>] fname = "/usr/share/man/man1/ls.1.gz" Open3.pipeline(["zcat", fname], "nroff -man", "colcrt") # convert PDF to PS and send to a printer by lpr pdf_file = "paper.pdf" printer = "printer-name" Open3.pipeline(["pdftops", pdf_file, "-"], ["lpr", "-P#{printer}"]) # count lines Open3.pipeline("sort", "uniq -c", :in=>"names.txt", :out=>"count") # cyclic pipeline r,w = IO.pipe w.print "ibase=14\n10\n" Open3.pipeline("bc", "tee /dev/tty", :in=>r, :out=>w) #=> 14 # 18 # 22 # 30 # 42 # 58 # 78 # 106 # 202
The path where gem executables are to be installed.
The path were rubygems plugins are to be installed.
Get the default RubyGems API host. This is normally https://rubygems.org.
Set the default RubyGems API host.
Builds a command line string from an argument list, array.
All elements are joined into a single string with fields separated by a space, where each element is escaped for the Bourne shell and stringified using to_s.
ary = ["There's", "a", "time", "and", "place", "for", "everything"] argv = Shellwords.join(ary) argv #=> "There\\'s a time and place for everything"
Array#shelljoin is a shortcut for this function.
ary = ["Don't", "rock", "the", "boat"] argv = ary.shelljoin argv #=> "Don\\'t rock the boat"
You can also mix non-string objects in the elements as allowed in Array#join.
output = `#{['ps', '-p', $$].shelljoin}`
Builds a command line string from an argument list, array.
All elements are joined into a single string with fields separated by a space, where each element is escaped for the Bourne shell and stringified using to_s.
ary = ["There's", "a", "time", "and", "place", "for", "everything"] argv = Shellwords.join(ary) argv #=> "There\\'s a time and place for everything"
Array#shelljoin is a shortcut for this function.
ary = ["Don't", "rock", "the", "boat"] argv = ary.shelljoin argv #=> "Don\\'t rock the boat"
You can also mix non-string objects in the elements as allowed in Array#join.
output = `#{['ps', '-p', $$].shelljoin}`
Returns the sine of x in radians.
Domain: (-INFINITY, INFINITY).
Range: [-1.0, 1.0].
Examples:
sin(-PI) # => -1.2246063538223773e-16 # -0.0000000000000001 sin(-PI/2) # => -1.0 sin(0.0) # => 0.0 sin(PI/2) # => 1.0 sin(PI) # => 1.2246063538223773e-16 # 0.0000000000000001
Returns the arc sine of x.
Domain: [-1, -1].
Range: [-PI/2, PI/2].
Examples:
asin(-1.0) # => -1.5707963267948966 # -PI/2 asin(0.0) # => 0.0 asin(1.0) # => 1.5707963267948966 # PI/2