logic

问题 So, we are creating a game in VB.net based off the game, Farkle. Basically, you roll an amount of dice and depending on what you keep is your score. We have eight dice. Here's an example, say you roll 3 "3"s and you want to score them, a three of a kind. We want to check all the dice together to see if we do have three 3's. We have figured out the two of a kind, but the three of a kind we cannot. For l = 0 To 5 For o = 1 To 6 For q = 2 To 7 If (DieScore(l) = DieScore(o) And DieScore(l) =

问题 Everybody knows we are using multi threading platforms and we are developing multi threading applications. By the way, i couldn't recognize the thread issue. When i call a static method (that is in another class.) , which thread will be run ? does gui thread go the jobs and run method ? i.e: (i am gonna give vb code sample . Logic is the same with java.) Private Sub runValuesTest_Click(sender As System.Object, e As System.EventArgs) Handles RunValuesTest.Click DummyClass.Instance.DoJob() End

问题 I have a table that contains this data. main_id main_name other_name 1 aa aa bb bb 1 aa aa cc cc 2 bb bb aa aa 2 bb bb cc cc 3 cc cc aa aa 3 cc cc bb bb I have a field where user will search by name, when user searches for name the query should get data like main_name and other_name. What I have tried so far is: select where main_name like $data_entered or other_name like $data_entered the result of this gives me main_id main_name other_name 1 aa aa cc cc 3 cc cc aa aa 3 cc cc bb bb I need to

问题 I am trying to achieve and NOT operation and NAND operation in between Queries. Scenario 1: SELECT country_name,country_code from country where not (country_name='Land islands' and country_code='AX'); Works well; Shows all other countries other than the two country which I am mentioning. Scenario 2: When I try with some select inside the where condition it shows errors. SELECT * from country where not (SELECT * from country where country_name='Land islands' and SELECT * from country where

问题 I need to find whether a new event created over laps any of the existing event. Event Table ID EventName StartTime EndTime 1 Event1 11:30AM 12PM 2 Event2 11:30AM 11:40AM 3 Event3 11:40AM 12PM 4 Event4 12PM 12:30PM 5 Event5 11:30AM 12:30PM In above table, event 2 overlaps event 1, event 3 overlaps event 1, event 5 overlaps event 1... Current event start time and existing schedule end time, current end time and existing schedule start time can be same. I am trying to compare the whether the new

问题 I am trying to calculate sine of an angle without using the Math.sin(). I got stuck in it's equation as I keep getting the wrong results note I have a method that changes the angle from degrees to radians public static double sin(double x, int precision) { //this method is simply the sine function double answer = 1, power = 1; int n = 2,factorial = 1; while (n<=precision) { power = (power * x * x *-1) +1 ; factorial = (factorial * (n +1))* (n-1); answer = answer + ((power/factorial )); n = n

问题 I am stuck with a theorem and I think that it's unprovable. Theorem double_negation : forall A : Prop, ~~A -> A. Can you prove it or explain why it is unprovable? Is it due to Gödel's incompleteness theorems? 回答1: Double negation elimination is not provable in constructive logic which underpins Coq. Attempting to prove it we quickly get stuck: Theorem double_negation_elim : forall A : Prop, ~~A -> A. Proof. unfold not. intros A H. (* stuck because no way to reach A with H : (A -> False) ->

问题 I am on Wpf and I have a list of coordinates where I draw them on a Bitmap Image. My Bitmap file is 1000 * 1000 and it gets filled in a 680 * 440 Image control. Now what I am trying to accomplish is to highlight the coordinates that are near the mouse cursor, when mouse is hoovering my Image. on MouseMove() event handler, I call this function and pass to it my mouse position with respect to the Image control: public void HighLightNearbyDots(Point MousePosition) { int Distance; CoordPoint temp

问题 Struggling to write the code...getting lost in the loops. I've got there 2 data sets, for example: var elements = [ {"id":"21.U2duHWiX.0zu.E0C","amount":"345"}, {"id":"21.U2duHWiX.A5q.E0C","amount":"344"} ] var elements_in_combination = [ {"id":"21.U2duHWiX.0zu.E0C","amount":"329","combination":["21.U2duHWiX.0zu.E0C","21.U2duHWiX.A5q.E0C"]}, {"id":"21.U2duHWiX.A5q.E0C","amount":"328","combination":["21.U2duHWiX.0zu.E0C","21.U2duHWiX.A5q.E0C"]}, ] I'm looking for the lowest amount using all

问题 I've encountered a question asking whether the flowing sentence is valid/contingent/unsatisfiable: p(x)⇒∀x.p(x) I think the answer is the sentence is valid. under section 6.10 of the textbook here http://logic.stanford.edu/intrologic/secondary/notes/chapter_06.htmlsays a sentence with free variables is equivalent to the sentence in which all of the free variables are universally quantified. Therefore I think the first relational sentence p(x) is equal to ∀x.p(x) and therefore the sentence is