openr | Distributed platform for building autonomic network | Networking library

I'm unable to parse the JSON file below to the corresponding class. It was exported by pandas' DateFrame. The reason I can't parse it, is because the format is a bit weird. How can I do that?

The CalcTradePrice method should be called right after Trade object's initialization. Right now, it is being called before that, which leads to an exception:

System.DivideByZeroException: 'Attempted to divide by zero.'

I'm using subprocess to run several scrapy spiders in parallel like this:

I do not know much about cross-comping. I am using eclipse on linux machine to cross compile armv7-a Hellow world Example.

I'm trying to use aggregation functions on a table to track the time progression of tasks assigned to users.

Part of the table looks something like this:

Table tasks:

I have a simple Cordova project with Angular Framework. I am using https://github.com/auctifera-josed/cordova-plugin-idynamo plugin to communicate with MagTek device. I am listening to the 'magtekEvent' on load of a particular screen to capture the data. Every time I go to other screen and come back to this screen I can see the event is triggering multiple times based on the number of time I visit this screen. I tried removing the event but nothing happened. Can anyone help me on how to stop this event when I go to other screen or when I close this device.

I added a log inside plugin file and found the plugin is triggering the event only once and I hope it can be fixed using JS itself.

Below is the code snippet:

I have a two tables:

properties

• uid
• source
• postcode

postcodes

• postcode

What I'm trying to do is make a list of postcodes that have no properties grouping them by source and postcode, I had a partial success with this query:

This is a very frustrating recurring problem. I only use flow rates in cubic meter per hour throughout my model. All Valve's flow rates are set dynamically, using various functions. Thus we use valve.set_openRate(flowm3h / 3.6) to have flow in liter/sec and valve.set_openRate(flowm3h / 3600) to have flow in cubic meter/sec.

However Anylogic seems to at random decide whether the set_openRate() function uses units of liter/s or cubic_meter/s. For example I drop a valve Rate_when_open = openRate/3.6 liter/s and Initially closed (using a parameter openRate). I set the parameter openRate = 1200. from here it goes to two fluid splits, splitting the fluid three ways. Each branch controlled via a valve - (outvalve_0 .. 2) no limits. Run the model, open outvalve_1, close it, open outvalve_0... all works fine; the flow rate is 0.333 (m3/s which is 333.33 liter/s, no problem). Save the model. Close Anylogic. Re-open Anylogic and load the model. Now modify the model, add a button and split the flow 0.2, 0.3 and 0.5 through the three valves, using a function outvalve_0.set_openRate(1200*0.2/3.6); outvalve_1.set_openRate(1200*0.3/3.6); outvalve_2.set_openRate(1200*0.5/3.6); outvalve_0.open();outvalve_1.open();outvalve_2.open(); Run. The flow is limited to 0.333 cubic meter/s and all flow goes out via outvalve_0. Run model in debug mode, it shows the openRate for outvalve_0 is set to 66.667 m3/s; outvalve_1 to 100 m3/s and outvalve_2 to 166.67 m3/s. Since the invalve limits flow to (1200/3.6) = 0.333 cubic meter/s, the rate on the three outvalves are too high (therefore Anylogic interpreted the initial (1200/3.6) as 0.333 m3/s and the subsequent (1200*0.2/3.6) as 66.67 m3/s and not as liter/s (0.067m3/s). You have to change the code to outvalve_0.set_openRate(1200*0.2/3600)..etc. for it to work

Problem is this is not consequent. For in the next model, slightly different setup, if you use (1200*0.2/3600) it now interprets this as 0.000067 m3/s and you have to change the code back to (1200*0.2/3.6).

So the question: How do you know the units that Anylogic is going to use when you pass a flow-rate through the valve.set_openRate() function? On what basis does it decide what the unit is? OR... Is there a way to force the unit?

When using the mqtt callback function. I am getting extra characters and persisting characters on each run.