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Found 5 results

  1. Hi. I’ve discovered what appears to me to be a quirk in the behavior of dataflow in LabVIEW. This discovery occurred while working on an application that contains a main while loop and housekeeping code that runs after the main while loop. I’m enforcing the order of execution in the VI by wiring the error cluster through the main while loop and over to the housekeeping code. Attached is a zip file containing a VI that reduces the application to its key components. The VI contains two while loops connected by an error cluster. The cluster passes through a subvi and sequence struct
  2. When I originally selected the name for my blog ExpressionFlow back many years ago, what I had in mind was functional dataflow programming and the ability to pass any subdiagrams (expressions) around as first class citizens of the language. Functional programming languages (haskell, clojure, lisp) have a lot in common with dataflow world. In principle, calling a function in a functional language is identical to calling a node in a visual language. Passing data between functions happens in an immutable way in functional languages, similar to the concept of data flowing between nodes in a flow-b
  3. All, I am happy to announce that I am back in blogging on ExpressionFlow. I'm trying to cover more theoretical topics around visual programming and discuss new fresh approaches. I'd like to invite everyone to follow the blog and @expressionflow twitter account. url: http://expressionflow.com twitter: @expressionflow facebook: https://www.facebook.com/expressionflow Please let me know the kind of topics you'd like me to discuss. There's lots of cool topics on my mind already but I would love to hear from you, what would be something interesting for you all. Thanks, and happ
  4. Recently I've been looking around at other dataflow languages, primarily because I'm curious to see how G's language design influences the way we think about dataflow. Last week I downloaded and installed Microsoft's Visual Programming Language, a dataflow language included as part of their Robotics Development Studio. On the surface VPL appears to be a direct competitor to Labview. If that concerns you, don't worry... imo VPL has a long ways to go before it can offer the simple workflow and overall ease of use as Labview. In fact, when Robotic Studio was first released MS did not publicly
  5. I have a multicolumn listbox where I would like a "right-click" to set the value of the MC listbox to the row that was right-clicked, then a shortcut menu will appear. Depending on the value of the MC listbox (i.e. row clicked) I determine what right-click menu options are available. To do this, I use the mouse down event, and if it's a right click, I set the MC listbox value to the row clicked. Then, the shortcut menu activation event is fired, and in there I use the current value of the MC listbox to enable/disable menu items. My question is this, can I always expect the mouse down event to
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