boolean-expression

问题 The code below is from one of the classes in a SDK jar I'm using in my app. How did it compile with int as the type for the indexSize, bestWidth, etc. below? config = this.mCamera.getParameters(); int indexSize = false; int bestWidth = false; int bestHeight = false; int maxRes = false; ZZZCLog.d("Camera supported sizes"); List<Size> supportedSizes = config.getSupportedPreviewSizes(); for(int i = supportedSizes.size() - 1; i >= 0; --i) { ZZZCLog.d(((Size)supportedSizes.get(i)).width + " " + (

问题 The code below is from one of the classes in a SDK jar I'm using in my app. How did it compile with int as the type for the indexSize, bestWidth, etc. below? config = this.mCamera.getParameters(); int indexSize = false; int bestWidth = false; int bestHeight = false; int maxRes = false; ZZZCLog.d("Camera supported sizes"); List<Size> supportedSizes = config.getSupportedPreviewSizes(); for(int i = supportedSizes.size() - 1; i >= 0; --i) { ZZZCLog.d(((Size)supportedSizes.get(i)).width + " " + (

来源： https://stackoverflow.com/questions/63418184/parsing-a-boolean-expression-into-a-mysql-query-in-php

来源： https://stackoverflow.com/questions/63499032/boolean-expression-for-modified-queens-problem

问题 Let's say I have a DataFrame like this: df = pd.DataFrame({'consumption':['squirrel eats apple', 'monkey eats apple', 'monkey eats banana', 'badger eats banana'], 'food':['apple', 'apple', 'banana', 'banana'], 'creature':['squirrel', 'badger', 'monkey', 'elephant']}) consumption creature food 0 squirrel eats apple squirrel apple 1 monkey eats apple badger apple 2 monkey eats banana monkey banana 3 badger eats banana elephant banana I want to find rows where the 'creature' & 'food' occur in

问题 This question already has answers here : Is short-circuiting logical operators mandated? And evaluation order? (7 answers) How does C++ handle &&? (Short-circuit evaluation) [duplicate] (7 answers) Closed 6 years ago . Given two conditions with an && connection. I know that the order of evaluation is from left to right. But if the first condition resolves to false, it the second condition guaranteed to not get evaluated? #define SIZE bool array[SIZE]; int index; // play with variables // ...

问题 This question already has answers here : Is short-circuiting logical operators mandated? And evaluation order? (7 answers) How does C++ handle &&? (Short-circuit evaluation) [duplicate] (7 answers) Closed 6 years ago . Given two conditions with an && connection. I know that the order of evaluation is from left to right. But if the first condition resolves to false, it the second condition guaranteed to not get evaluated? #define SIZE bool array[SIZE]; int index; // play with variables // ...

问题 This question already has answers here : Is short-circuiting logical operators mandated? And evaluation order? (7 answers) How does C++ handle &&? (Short-circuit evaluation) [duplicate] (7 answers) Closed 6 years ago . Given two conditions with an && connection. I know that the order of evaluation is from left to right. But if the first condition resolves to false, it the second condition guaranteed to not get evaluated? #define SIZE bool array[SIZE]; int index; // play with variables // ...

问题 I have tried Javaluator which helped me in evaluating the expressions like (A OR B) AND C . But now I only want to expand the expression (A OR B) AND C to A AND C OR A AND B can any body tell me how can I do this in Java any API or any other help? 回答1: If you don't need to do it yourself, you may use Wolfram|Alpha API, it has a plenty of boolean-algebra-related features, like converting to various normal forms and so on. If that's a homework and you should invent your own wheel, you may use

问题 I want to have an image bound to a boolean and have the source of the image to depend on the boolean value i.e. true source="image1" false source="image2" I was wondering if there is a way to do it inline without need for a converter. 回答1: You can create a style on the Image which uses a DataTrigger to swap the image source depending on a binding. In this example the image changes depending on the value of a boolean called simply "Value". <Image Width="16"> <Image.Style> <Style TargetType="{x