boolean

问题 I've been experimenting with dbus lately. But I can't seem to get my dbus Service to guess the correct datatypes for boolean values. Consider the following example: import gtk import dbus import dbus.service from dbus.mainloop.glib import DBusGMainLoop class Service(dbus.service.Object): def __init__(self): bus_name = dbus.service.BusName("org.foo.bar", bus = dbus.SessionBus()) dbus.service.Object.__init__(self, bus_name, "/org/foo/bar") @dbus.service.method("org.foo.bar", in_signature = "a

问题 I'm trying to get a boolean value from a SoapObject, I've gotten from a response from a web server using kSOAP2 in Android... I've saved the response form the web call in a SoapObject: SoapObject sResult = (SoapObject)envelope.bodyIn; and I'm iterating through the response and grabbing the values SoapObject soapresults = (SoapObject)sResult.getProperty(0); for (int i = 0; i < count; i++) { SoapObject mail = (SoapObject)soapresults.getProperty(i); /*Getting the values here*/ } A mail

问题 I am trying to map the result of an exists query (which returns TRUE/FALSE) from a MySQL database to a POJO via resultSetTransformer . I would hope the result of this exists query can get mapped to a boolean but it does not and throws the below error: org.hibernate.PropertyAccessException: IllegalArgumentException occurred while calling setter of TestBean.value The cause of this exception is shown as: java.lang.IllegalArgumentException: argument type mismatch My sample class: public class

问题 I am working on a project within Python that is to determine the multi-tasking efficiency of a person. Part of the project is to have a user respond to an event on screen using the mouse. I have decided to have the user click within a ball. However I am having issues with my code on verifying that the mouse cursor is actually within the confines of the circle. The code for the methods in question are below. Radius of the circle is 10. #boolean method to determine if the cursor is within the

问题 I'm developing an Android application and I just ran into something. I have some anonymous classes (event listeners). They are parameterized from the database. What I did is this: buttonA.setOnTouchListener(new View.OnTouchListener() { private Boolean isActive = null; private boolean isTrigger; private int onLevel; private int offLevel; private int chIdx; @Override public boolean onTouch(View v, MotionEvent event) { if (isActive == null) { Cursor btnSettings = dbHelper.getButtonsTable()

问题 In this piece of code void legacyFunction(int length, bool *bitset) { // stuff, lots of stuff } int main() { int somenumber = 6; // somenumber is set to some value here bool *isBitXSet = new bool[somenumber]; // initialisation of isBitXSet. legacyFunction(somenumber, isBitXSet); delete[] isBitXSet; return 0; } I'd like to replace bool *isBitXSet = new bool[somenumber]; by something like std::vector<bool> isBitXset(somenumber, false); But I cannot do legacyFunction(somenumber, isBitXSet.data()

问题 In this piece of code void legacyFunction(int length, bool *bitset) { // stuff, lots of stuff } int main() { int somenumber = 6; // somenumber is set to some value here bool *isBitXSet = new bool[somenumber]; // initialisation of isBitXSet. legacyFunction(somenumber, isBitXSet); delete[] isBitXSet; return 0; } I'd like to replace bool *isBitXSet = new bool[somenumber]; by something like std::vector<bool> isBitXset(somenumber, false); But I cannot do legacyFunction(somenumber, isBitXSet.data()

问题 This question already has answers here : Closed 11 years ago . This is probably pretty basic... but I don't seem to get it: How does (2 & 1) = 0 (3 & 1) = 1 (4 & 1) = 0 etc.. This pattern above seems to help find even numbers or (0 | 1) = 1 (1 | 1) = 1 (2 | 1) = 3 (3 | 1) = 4 (4 | 1) = 5 (5 | 1) = 5 I know how boolean algebra works between bits. But I don't understand how Boolean algebra works with integers (in C# at the least). thanks in advance. 回答1: It works the same way in C# as it does

问题 Often in my code I need to check whether the state of x amount of bools are all true OR all bools are false. So I do: BOOL first, second, third; if((first && second && third) || (!first && !second && !third)) //do something Being a lazy programmer, I want to know if there is some mathematical shorthand for this kind of query, instead of having to type out this whole thing every time? 回答1: The shorthand for all bools the same is testing for (pairwise) equality: (first==second && second==third)

问题 I have a list of tuples like this: listOfTuples = [(0, 1), (0, 2), (3, 1)] and an array that could look like this: myArray = np.array([-2, 9, 5]) Furthermore, I have an array with Boolean expressions which I created like this: dummyArray = np.array([0, 1, 0.6]) myBooleanArray = dummyArray < 1 myBooleanArray therefore looks like this: array([True, False, True], dtype=bool) Now I would like to extract values from listOfTuples and myArray based on myBooleanArray . For myArray it is straight