_D

Convert a millisecond-level timestamp or a Date object into a time string.

    
    
    
_D()

    
    
    
_D(timestamp)

    
    
    
_D(timestamp, fmt)

Examples

• Get and print the current time string:

  • javascript
  • python
  • rust
  • cpp

  
      javascript
      
      
  function main(){
      var time = _D()
      Log(time)
  }
  

  
      python
      
      
  def main():
      strTime = _D()
      Log(strTime)
  

  
      rust
      
      
  fn main() {
      let time = _D(None);
      Log!(time);
  }
  

  
      c++
      
      
  void main() {
      auto strTime = _D();
      Log(strTime);
  }
  

• The timestamp is 1574993606000; convert it with code:

  • javascript
  • python
  • rust
  • cpp

  
      javascript
      
      
  function main() {
      Log(_D(1574993606000))
  }
  

  
      python
      
      
  def main():
      # Running on a server set to Beijing time, the result is: 2019-11-29 10:13:26; while running this code on a docker on a server in another region gives the result: 2019-11-29 02:13:26
      Log(_D(1574993606))
  

  
      rust
      
      
  fn main() {
      Log!(_D(1574993606000));
  }
  

  
      c++
      
      
  void main() {
      Log(_D(1574993606000));
  }
  

• Format using the fmt argument. The format strings for JavaScript, Python, and C++ differ; please refer to the following examples for details:

  • javascript
  • python
  • rust
  • cpp

  
      javascript
      
      
  function main() {
      Log(_D(1574993606000, "yyyy--MM--dd hh--mm--ss"))   // 2019--11--29 10--13--26
  }
  

  
      python
      
      
  def main():
      # 1574993606 is a second-level timestamp
      Log(_D(1574993606, "%Y--%m--%d %H--%M--%S"))        #  2019--11--29 10--13--26
  

  
      rust
      
      
  fn main() {
      // Rust's _D() function does not support the fmt argument; it only supports the default format: yyyy-MM-dd hh:mm:ss
      Log!(_D(1574993606000));    // 2019-11-29 10:13:26
  }
  

  
      c++
      
      
  void main() {
      Log(_D(1574993606000, "%Y--%m--%d %H--%M--%S"));    // 2019--11--29 10--13--26
  }
  

Returns

Arguments

See Also

Remarks

If no argument is passed, the current time string is returned. When using the _D() function in a Python strategy, note that the argument passed in is a second-level timestamp (in JavaScript and C++ strategies it is a millisecond-level timestamp; 1 second equals 1000 milliseconds). When using the _D() function in live trading to parse a timestamp into a readable time string, note the time zone and time settings of the operating system on which the docker (hosting program) runs, because the parsing result of the _D() function depends on the docker system's time.