Results for: "module_function"

Set logging severity threshold.

severity

The Severity of the log message.

Returns true if this is a regular (i.e. non-singular) matrix.

Returns true if this is a singular matrix.

Creates a vector from an Array. The optional second argument specifies whether the array itself or a copy is used internally.

Release code

Removes the last List.

Completes shortened long style option switch and returns pair of canonical switch and switch descriptor OptionParser::Switch.

typ

Searching table.

opt

Searching key.

icase

Search case insensitive if true.

pat

Optional pattern for completion.

Returns the number of elements in the match array.

m = /(.)(.)(\d+)(\d)/.match("THX1138.")
m.length   #=> 5
m.size     #=> 5

This says “you can break a line here if necessary”, and a width-column text sep is inserted if a line is not broken at the point.

If sep is not specified, “ ” is used.

If width is not specified, sep.length is used. You will have to specify this when sep is a multibyte character, for example.

Removes an object hierarchy from the data store, by name.

WARNING: This method is only valid in a PStore#transaction and it cannot be read-only. It will raise PStore::Error if called at any other time.

Sets default task values

Checks if the object is shareable by ractors.

Ractor.shareable?(1)            #=> true -- numbers and other immutable basic values are frozen
Ractor.shareable?('foo')        #=> false, unless the string is frozen due to # freeze_string_literals: true
Ractor.shareable?('foo'.freeze) #=> true

See also the “Shareable and unshareable objects” section in the Ractor class docs.

Releases the lock and sleeps timeout seconds if it is given and non-nil or forever. Raises ThreadError if mutex wasn’t locked by the current thread.

When the thread is next woken up, it will attempt to reacquire the lock.

Note that this method can wakeup without explicit Thread#wakeup call. For example, receiving signal and so on.

Removes all objects from the queue.

Returns the length of the queue.

Removes all objects from the queue.

Returns the length of the queue.

Activates the trace.

Returns true if trace was enabled. Returns false if trace was disabled.

trace.enabled?  #=> false
trace.enable    #=> false (previous state)
                #   trace is enabled
trace.enabled?  #=> true
trace.enable    #=> true (previous state)
                #   trace is still enabled

If a block is given, the trace will only be enabled within the scope of the block.

trace.enabled?
#=> false

trace.enable do
  trace.enabled?
  # only enabled for this block
end

trace.enabled?
#=> false

target, target_line and target_thread parameters are used to limit tracing only to specified code objects. target should be a code object for which RubyVM::InstructionSequence.of will return an instruction sequence.

t = TracePoint.new(:line) { |tp| p tp }

def m1
  p 1
end

def m2
  p 2
end

t.enable(target: method(:m1))

m1
# prints #<TracePoint:line test.rb:4 in `m1'>
m2
# prints nothing

Note: You cannot access event hooks within the enable block.

trace.enable { p tp.lineno }
#=> RuntimeError: access from outside

Deactivates the trace

Return true if trace was enabled. Return false if trace was disabled.

trace.enabled?      #=> true
trace.disable       #=> true (previous status)
trace.enabled?      #=> false
trace.disable       #=> false

If a block is given, the trace will only be disable within the scope of the block.

trace.enabled?
#=> true

trace.disable do
    trace.enabled?
    # only disabled for this block
end

trace.enabled?
#=> true

Note: You cannot access event hooks within the block.

trace.disable { p tp.lineno }
#=> RuntimeError: access from outside

The current status of the trace

Returns x+i*y;

Complex(1, 2)    #=> (1+2i)
Complex('1+2i')  #=> (1+2i)
Complex(nil)     #=> TypeError
Complex(1, nil)  #=> TypeError

Complex(1, nil, exception: false)  #=> nil
Complex('1+2', exception: false)   #=> nil

Syntax of string form:

string form = extra spaces , complex , extra spaces ;
complex = real part | [ sign ] , imaginary part
        | real part , sign , imaginary part
        | rational , "@" , rational ;
real part = rational ;
imaginary part = imaginary unit | unsigned rational , imaginary unit ;
rational = [ sign ] , unsigned rational ;
unsigned rational = numerator | numerator , "/" , denominator ;
numerator = integer part | fractional part | integer part , fractional part ;
denominator = digits ;
integer part = digits ;
fractional part = "." , digits , [ ( "e" | "E" ) , [ sign ] , digits ] ;
imaginary unit = "i" | "I" | "j" | "J" ;
sign = "-" | "+" ;
digits = digit , { digit | "_" , digit };
digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
extra spaces = ? \s* ? ;

See String#to_c.