TGINSIGHT SIMILAR POSTS
Source channel @githubtrending · Post #15575 · Mar 20
#java#aerospace#flight_simulator#java#modeling#optimization#rocket#rocketry#simulation#trajectory OpenRocket is a free tool to design, visualize in 3D, and simulate model rockets with six-degree-of-freedom flight analysis, real-time data on altitude/velocity, automatic optimization, and exports for 3D printing or other programs. It works on any platform via Java. You benefit by testing rockets virtually first, saving time/money on failed builds, predicting performance accurately, and flying safer, higher with optimized designs. https://github.com/openrocket/openrocket
Search: #insert
@djangoproject · Post #428 · 08/30/2017, 03:40 AM
How #Django knows to #UPDATE vs. #INSERT when you call #save (), #Django follows this algorithm: If the object’s primary key attribute is set to a value that evaluates to True (i.e., a value other than None or the empty string), Django executes an UPDATE. If the object’s primary key attribute is not set or if the UPDATE didn’t update anything, Django executes an INSERT.