declarative

问题 In ASP (Answer Set Programming), programs are written in a higher-level declarative language and then grounded in a deterministic way to generate an ASP instance using a grounder like lparse or gringo. Are there popular grounders the SAT community uses for generating instances? In other words, is there something that could take an expression such as: vertex(a; b; c). isRed(V) \/ isBlue (V) \/ isGreen(V) :- vertex(V). and generate a DIMACS file from it? In general, how are SAT competition

问题 For fun I've been attempting to write a Knight's Tour (https://en.wikipedia.org/wiki/Knight%27s_tour) solver in gprolog using Warnsdorf's rule. I found another SO post asking about efficiency that provided a solution in B-prolog: knight's tour efficient solution. My problem arises with the following section: :- table warnsdorff(+,+,+,+,+,-,-,min). warnsdorff(R, C, X, Y, Visits, NewX, NewY, Score) :- possible_knight_moves(R, C, X, Y, Visits, NewX, NewY), possible_moves_count(R, C, NewX, NewY,

问题 I'm trying to use association proxy for tags, in a very similar scenario to the example in the docs. Here is a subset of my schema (it's a blog), using declarative: class Tag(Base): __tablename__ = 'tags' id = Column(Integer, primary_key=True) tag = Column(Unicode(255), unique=True, nullable=False) class EntryTag(Base): __tablename__ = 'entrytags' entry_id = Column(Integer, ForeignKey('entries.id'), key='entry', primary_key=True) tag_id = Column(Integer, ForeignKey('tags.id'), key='tag',

问题 I tried to decompile a .class file that contains JUnit tests. I read the byte code, but I did not see any clue of the @Test annotation(it's used in the java source code). As metadata, how are annotations represented in bytecode? 回答1: Annotations appear just before the byte code of the thing it is associated with. If you are not seeing the annotations it could be an old de-compiler (most of them are) 来源： https://stackoverflow.com/questions/12368137/how-is-java-annotation-represented-in-java

问题 After a long learning loop via XAML, I've returned to HTML and javascript, and realised that the concept of declarative code - in terms of rules for transformation - is an incredibly powerful concept. Despite its surfeit of syntax, XSLT processing of XML is the keystone of declarative transformation programming. I have, however, always found it hard to understand how XSLT would be used for everyday tasks (with XML). What are some good examples of XSLT elegantly solving a programming problem,

问题 I'm using declarative SQLAlchemy and I have three models: Role , Permission , and RolePermission . In my Role model, I have the following: class Role(Base): name = Column(u'NAME', VARCHAR(50), nullable=False, unique=True) permissionLinks = relationship(RolePermission, backref="role", order_by=name) permissions = relationship(Permission, backref=backref("roles", order_by=name), secondary=RolePermission.__table__, order_by=Permission.name) Now the permissions declaration works fine, and the

问题 I am a SQLAlchemy noob. Let's say I have an user table in declarative mode: class User(Base): __tablename__ = 'user' id = Column(u'id', Integer(), primary_key=True) name = Column(u'name', String(50)) When I know user's id without object loaded into session, I update such user like this: ex = update(User.__table__).where(User.id==123).values(name=u"Bob Marley") Session.execute(ex) I dislike using User.__table__ , should I stop worrying with that? Is there a better way to do this? Thanks! 回答1:

问题 Could someone please advise what the "correct" method is for adding HTML content to an ASP.NET page dynamically? I am aware of the following declarative method. //Declaration <%= MyMethodCall() %> //And in the code behind. protected String MyMethodCall() { return "Test Value"; } Is there a better or best practice way? EDIT: I am building a Galleriffic photo gallery dynamically depending on the images located in a specific folder. 回答1: Depends what you want to do. For controls/text I normally

问题 i am using the declarative/ui-binder method of adding images to a page. this is in combination with using the ImageBundle functions that GWT provides. what i would like to do is change the image out when i hover over the image. my questions are: what are the best way to do this, and is my current method the best method in the first place? my code looks something similar to: <ui:with field='res' type='path.to.my.app.AppResources' /> ... <g:HorizontalPanel ui:field='horizPanel' > <g:Image ui

问题 Having a really tough time getting Devise and Declarative to play nicely in RSpec testing. https://github.com/stffn/declarative_authorization/issues/95 stringify_keys error after supplementing session variables in functional tests These both address my problem, but neither had a solution that worked for me. # practices_controller_spec.rb it "assigns a new practice as @practice as owner" do get_action(:new, @owner) assigns(:practice).should be_a_new(Practice) sign_out @owner end def get_action