I am trying to use JSCIPOpt to solve a maximization problem but I couldn't find a way to set the problem objective. The scip document says
The default objective sense for SCIP problems is minimizing. Since we have a
maximization problem we have to change this:
SCIP_CALL_EXC(SCIPsetObjsense(scip, SCIP_OBJSENSE_MAXIMIZE));
But I was not able to find any API call in the JSCIPOpt to set objective. I was, however, able to find setMaximize in PySCIPOpt. Am I missing something? What is the correct way to set the objective using JSCIPOpt?
It doesn't seem to be supported yet. You should just create an issue on the github page and submit a feature request: https://github.com/SCIP-Interfaces/JSCIPOpt
Even better, though: Implement the feature yourself (see https://github.com/SCIP-Interfaces/JSCIPOpt#how-to-extend-the-interface) by introducing the necessary interface function in the same way it's done in PySCIPOpt and submit a merge request! This way you learn something on the way and everyone's happy :-)
Related
I'm trying to use a GWT button to call a FileUpload using the .click method. I was struggling with getting code to trigger after a file is selected using this method. I've tried using an addChangeHandler but it doesn't seem to be calling once a file is selected.
Any help would be appreciated,
Thanks!
If you use the lastest GWT 2.8.2, you will use Elemental2 and JsInterop (the correct approach right now; please find an explanation here: https://stackoverflow.com/a/52083441/5394086).
Then please find some examples below.
An implementation for native browser's API: https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/File_drag_and_drop .
It's a modern one with "drag'n'drop" instead of "click", hopefully you will like it.
The first example uses GXT for the UI, but the upload stuff will be the same for generic GWT, so it's easy to modify the example for your purposes. The animated gif shows how it works. What more, it works without additional effort with drag'n'drop.
https://gist.github.com/branflake2267/d424e4a0c0b371e3dd9d15bfd3514429
Another example with JSNI is currently kind of deprecated approach:
https://gist.github.com/branflake2267/97266601f0f225ae2a750fc8115dc2c4
Finally a very nice Java8 lambdas and also very compact example using only free libraries, since Elemental2 is a part of the "new GWT" and Elemento is open source (https://github.com/hal/elemento):
https://gist.github.com/ibaca/a8a84b6e7b63259109fd782d7dbadd8d
I hope you will find it useful.
I've made a code which displays an array which shows traffic lights flashing, should I save externally as script files or embed it into the HTML.
I also need to explain why I've done this.
Please I've got until over Christmas to finish this, I've looked everywhere and can't find much, so I'm turning to this where apparently experienced programmers are and who have done all this before.
Please don't close the question, I really need help. Thanks
What is the ultimate goal?
Code maintainability - use external script
Reuseability - use external script
Downloadtime/network i/o - a bit better if embedded.
Want the HTML/CSS redone by designer later - use external script
The more I think of it, the more reasons I see to put it extern.
And tge one I listed pro embed - that's nullified at second load (script from cache)
Revering to the MVC-Pattern I'd put it in an extra file. It's just better structured and better to read.
Another advantage is that you can reuse your code. Like if you'd have a second page which uses this code you would just need the include it there, too.
I am using Resource Change Listener to track the changes done to my project. Out of these changes i want know if the change was done via Eclipse menu or some other eclipse plugin or if it was typed in by user. Please suggest a way to achieve this.
I am not sure whether there is a direct API to to that, because the interface IResourceDelta that it mainly implements does not have a method on who modified the resource.
You can track most the changes mainly on the resource it modified, but 'who' modified it is an unanswered question for me too. I found this resource useful in this regards,
http://www.eclipse.org/articles/Article-Resource-deltas/resource-deltas.html
I am basically trying to do this
However the problem here is that the javascript refers to "document" and other terms which can be used with the browser but which when being executed through rhino cause an error. What is (if any) a way around for this?
I looked into envjs but I'm not sure it can be used to solve the above problem.If it can,can a link to the appropriate sources be provided?
I am trying to use Intellij's file templates (not live templates) to help mitigate how much boilerplate code I use when making Services, daos, and their interfaces.
I am able to use all the system defined variables just fine, such as
${PACKAGE_NAME}
What I want though, is to be able to use my own variable names, like
${MY_USER_INPUT}
however, when i do this like above, I get an error
The documentation says :
It is also possible to specify arbitrary number of custom variables in format ${<VARIABLE_NAME>}.
and then Intellij is supposed to prompt the user for the value.
However, this just plain doesn't work for me. What am I missing?
Looks like a bug, submitted as IDEA-63628. Please watch/vote.
I use the custom variabeles in alot of template and ${MY_USER_INPUT} should work.
What error do you get ? what vesion of IntelliJ Do you use ?
In general stating "however, when i do this like above, I get an error" really isent helpfull people cannot guess whats wrong if you dont tell us, you should at least post a clear example of you file template and the exact error.