My question is rather simple. I am using JuMP from Julia and I want to add constraints by separation to a model dynamically and I want all them to belong to the same #constraintref. The thing is that I do not know how many constraints I will end up adding. Is there a kind of push! or append function for adding constraints to the same ref?
If you need to extend the collection, just make your own array (e.g., ConstraintRef[]) and push! to it instead of using #constraintref.
Related
To prioritize the engineering effort around Requirements in a defined way, I came to the idea to use the information already added for the FMEA.
For this I have created a Stereotype named fmeaRelevant (will be named better later), which has several Tags.
My target now is to first calculate the averages of all of these Tags and then from these the average RPN, which is again a Tag.
For this, I have already created a ConstrainedProperty, which has the respective ConstrainedParameters and Constraints.
BindingConnectors are created between the ConstrainedParameters of the ConstraintProperty and the Tags of the Stereotype.
The Stereotype is assigned to my Requirements.
However, Open ConstraintView ... does not show me anything.
Is there anything I am missing?
P.S.: I am not sure how to provide something like a source code snippet for model content. If one makes a proposal in a comment, I will add this.
You used binding connectors between stereotype properties and constraint parameters? That should not be possible, since they are on different levels. The parameters are on the model level and the stereotype properties are on the language level.
Of course, Rhapsody sometimes allows strange things, so it might well be, that there is a way to get it running.
The RPN relates to an actual hazordous situation. Your model describes this situation and all values relating to the situation should therefore be value properties of the FMEAitem. This element would be defined in a library. By the way, this is how it's done in the new RAAML-specification, which might be a useful reference.
Here the link whose answer is the opposite to I want: Reflection in PLSQL?
I want to do the opposite operation to that Jon Heller wrote in the link above. I mean, I want to set attributes of an object dynamically not manually (because my user-defined type object has 130 attributes and in my opinion, filling out some many attributes manually is not best practice and not generic programming. Does anybody know how we can accomplish that?
I've tried to set up an index on a field using the index:true attribute but it doesn't seem to have any effect. Is this something on the TODO list or am I missing something?
Secondly, is there a way to specify the edge collections as models? Currently, I'm hooking sails bootstrap.js to create edges and insert index fields but it would be nice to avoid that.
There seems to be a number of features missing from this package. The sails-arangodb package is a work in progress and needs some assistance and TLC to finish.
I know that you can create new classes in R, but why would you want to? I've thought of two reasons:
You can use the is. function to test whether an object belongs to a particular class (classifications of objects)
To only allow certain classes of entries into slots of an object (e.g., only a string for the surnmane and only a number for a zip code in the person class).
I haven't thought of situations where these benefits couldn't be achieved fairly easily by other means or when they'd really be useful.
I hope that this isn't too open ended and more concrete examples how one might use defining classes would be great. Thanks for any thoughts.
Its called Object-Oriented programming. Look it up, but in short:
Objects encapsulate behaviour - eg the behaviour of the 'print' method for a class is specific to that class. You can then keep the code for that method on that class separate from other code. You then only have to tell your users to "print" the thing - which is something they already do - and they get a nicely custom printed version of your thing, without having to use a special print function, like "printMyThing(thing)".
Objects inherit behaviour from their parent classes - eg the 'formula' method for the glm class falls back to the formula method for the lm class (not sure if this is true, but its just for illustration.
In short, its a Good Thing.
Let's say I'm creating some app documentation. In creating a content type for functions, I have a text field for name, a box for a general description, and a couple other basic things. Now I need something for storing arguments to the function. Ideally, I'd like to input these as key-value pairs, or just two related fields, which can then be repeated as many times as needed for the given function. But I can't find any way to accomplish this.
The closest I've gotten is an abandonded field multigroup module that says to wait for CCK3, which hasn't even produced an alpha yet as far as I can tell and whose project page makes no obvious mention of this multi-group functionality. I also checked the CCK issue queue and don't think I saw it in there, either.
Is there a current viable way of doing this I'm not seeing? Viable includes "you're thinking of this the wrong way and do X instead." I've considered using a "Long text and summary" field, but that smells hackish and I don't know if I'd be setting myself up for side-effects. I'm new to Drupal.
There is the http://drupal.org/project/field_collection module but it's not yet ready. Right now you would need to implement your entity alas to do this :( not easy.
Not sure how well it would work, because it currently does a bit more (eg, forces to group pairs into categories and the keys need to be predefined) but you might want to have a look at http://drupal.org/project/properties.
You could create a these key-value fields on their own: create 2 regular fields that that can be added as often as needed.
So you have a x fields for the keys and x for the values. If this is only for you or other people it might work OK but usability wise, it's very ugly.
If you need to extract the fields from the function, to display it properly in a page template, you should propably use a different approach. Write the function with its arguemnts in a CCK field and in the template extract them as needed. The arguments are always (depending on language) in () and the different arguments are seperated by , so splitting them would by pretty easy.