Returns true if and only if there is more data in the string. See eos?. This method is obsolete; use eos? instead.
s = StringScanner.new('test string') # These two are opposites s.eos? # => false s.rest? # => true
Returns the “rest” of the string (i.e. everything after the scan pointer). If there is no more data (eos? = true), it returns "".
s.restsize is equivalent to s.rest_size. This method is obsolete; use rest_size instead.
Associates the given value with the given key; returns value.
If the given key exists, replaces its value with the given value; the ordering is not affected (see Entry Order):
h = {foo: 0, bar: 1} h[:foo] = 2 # => 2 h.store(:bar, 3) # => 3 h # => {:foo=>2, :bar=>3}
If key does not exist, adds the key and value; the new entry is last in the order (see Entry Order):
h = {foo: 0, bar: 1} h[:baz] = 2 # => 2 h.store(:bat, 3) # => 3 h # => {:foo=>0, :bar=>1, :baz=>2, :bat=>3}
Creates, updates, or deletes the named environment variable, returning the value. Both name and value may be instances of String. See Valid Names and Values.
If the named environment variable does not exist:
If value is nil, does nothing.
ENV.clear ENV['foo'] = nil # => nil ENV.include?('foo') # => false ENV.store('bar', nil) # => nil ENV.include?('bar') # => false
If value is not nil, creates the environment variable with name and value:
# Create 'foo' using ENV.[]=. ENV['foo'] = '0' # => '0' ENV['foo'] # => '0' # Create 'bar' using ENV.store. ENV.store('bar', '1') # => '1' ENV['bar'] # => '1'
If the named environment variable exists:
If value is not nil, updates the environment variable with value value:
# Update 'foo' using ENV.[]=. ENV['foo'] = '2' # => '2' ENV['foo'] # => '2' # Update 'bar' using ENV.store. ENV.store('bar', '3') # => '3' ENV['bar'] # => '3'
If value is nil, deletes the environment variable:
# Delete 'foo' using ENV.[]=. ENV['foo'] = nil # => nil ENV.include?('foo') # => false # Delete 'bar' using ENV.store. ENV.store('bar', nil) # => nil ENV.include?('bar') # => false
Raises an exception if name or value is invalid. See Invalid Names and Values.
Returns revision information for the erb.rb module.
The reason this block was terminated: :break, :redo, :retry, :next, :return, or :noreason.
Creates a new child process by doing one of the following in that process:
Passing string command_line to the shell.
Invoking the executable at exe_path.
This method has potential security vulnerabilities if called with untrusted input; see Command Injection.
Returns:
true if the command exits with status zero.
false if the exit status is a non-zero integer.
nil if the command could not execute.
Raises an exception (instead of returning false or nil) if keyword argument exception is set to true.
Assigns the command’s error status to $?.
The new process is created using the system system call; it may inherit some of its environment from the calling program (possibly including open file descriptors).
Argument env, if given, is a hash that affects ENV for the new process; see Execution Environment.
Argument options is a hash of options for the new process; see Execution Options.
The first required argument is one of the following:
command_line if it is a string, and if it begins with a shell reserved word or special built-in, or if it contains one or more meta characters.
exe_path otherwise.
Argument command_line
String argument command_line is a command line to be passed to a shell; it must begin with a shell reserved word, begin with a special built-in, or contain meta characters:
system('if true; then echo "Foo"; fi') # => true # Shell reserved word. system('echo') # => true # Built-in. system('date > /tmp/date.tmp') # => true # Contains meta character. system('date > /nop/date.tmp') # => false system('date > /nop/date.tmp', exception: true) # Raises RuntimeError.
Assigns the command’s error status to $?:
system('echo') # => true # Built-in. $? # => #<Process::Status: pid 640610 exit 0> system('date > /nop/date.tmp') # => false $? # => #<Process::Status: pid 640742 exit 2>
The command line may also contain arguments and options for the command:
system('echo "Foo"') # => true
Output:
Foo
See Execution Shell for details about the shell.
Raises an exception if the new process could not execute.
Argument exe_path
Argument exe_path is one of the following:
The string path to an executable to be called.
A 2-element array containing the path to an executable and the string to be used as the name of the executing process.
Example:
system('/usr/bin/date') # => true # Path to date on Unix-style system. system('foo') # => nil # Command failed.
Output:
Mon Aug 28 11:43:10 AM CDT 2023
Assigns the command’s error status to $?:
system('/usr/bin/date') # => true $? # => #<Process::Status: pid 645605 exit 0> system('foo') # => nil $? # => #<Process::Status: pid 645608 exit 127>
Ruby invokes the executable directly, with no shell and no shell expansion:
system('doesnt_exist') # => nil
If one or more args is given, each is an argument or option to be passed to the executable:
system('echo', 'C*') # => true system('echo', 'hello', 'world') # => true
Output:
C* hello world
Raises an exception if the new process could not execute.
Returns current status of GC stress mode.
Updates the GC stress mode.
When stress mode is enabled, the GC is invoked at every GC opportunity: all memory and object allocations.
Enabling stress mode will degrade performance, it is only for debugging.
flag can be true, false, or an integer bit-ORed following flags.
0x01:: no major GC 0x02:: no immediate sweep 0x04:: full mark after malloc/calloc/realloc
The RubyGems version required by this gem
Recovers the signed data from signature using a public key pkey. Not all signature algorithms support this operation.
Added in version 3.0. See also the man page EVP_PKEY_verify_recover(3).
signature
A String containing the signature to be verified.
Restore session state from the session’s FileStore file.
Returns the session state as a hash.
Restore (empty) session state.
Restore session state from the session’s PStore file.
Returns the session state as a hash.
Returns an Array of SingleResponse for this BasicResponse.