calling boolean method, heads or tails
You should call like : and it will print the output of the function as true or false.
boolean
Java check if boolean is null
boolean can only be true or false because it’s a primitive datatype (+ a boolean variables default value is false). You can use the class Boolean instead if you want to use null values. Boolean is a reference type, that’s the reason you can assign null to a Boolean “variable”. Example:
Convert boolean to int in Java
^^ PS : true = 1 and false = 0
Don’t understand static boolean behavior
static in this context means “local” (to the translation unit). There will be multiple copies of read_mess in your program, one per translation unit which is not the same thing as a header file. (In your case you can most likely approximate “translation unit” as .cpp or .c or .cc file). Probably what you meant to do was to declare an extern variable, or static class … Read more
How to convert string to boolean php
Strings always evaluate to boolean true unless they have a value that’s considered “empty” by PHP (taken from the documentation for empty): “” (an empty string); “0” (0 as a string) If you need to set a boolean based on the text value of a string, then you’ll need to check for the presence or otherwise of that value. … Read more
C++ printing boolean, what is displayed?
The standard streams have a boolalpha flag that determines what gets displayed — when it’s false, they’ll display as 0 and 1. When it’s true, they’ll display as false and true. There’s also an std::boolalpha manipulator to set the flag, so this: …produces output like: For what it’s worth, the actual word produced when boolalpha is set to true is localized–that is, <locale> has a num_put category that handles numeric conversions, … Read more
How to simplify Boolean expression with XOR?
If you consider that A XOR B is equivalent to (A AND ~B) OR (~A AND B) then the rest should be easy.
How to return a boolean method in java?
You’re allowed to have more than one return statement, so it’s legal to write It’s also unnecessary to compare boolean values to true or false, so you can write Edit: Sometimes you can’t return early because there’s more work to be done. In that case you can declare a boolean variable and set it appropriately … Read more
How to create a numpy array of all True or all False?
numpy allows the creation of arrays of all ones or all zeros very easily: e.g. numpy.ones((2, 2)) or numpy.zeros((2, 2)) Since True and False are represented in Python as 1 and 0, respectively, we have only to specify this array should be boolean using the optional dtype parameter and we are done. numpy.ones((2, 2), dtype=bool) … Read more
How do I print out the value of this boolean? (Java)
should work just fine. Incidentally, in the year % 400 part will never be reached because if (year % 4 == 0) && (year % 100 == 0) && (year % 400 == 0) is true, then (year % 4 == 0) && (year % 100 == 0) must have succeeded. Maybe swap those two … Read more