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I am looking for a short syntax that would look somewhat like x *= -1 where x is a number, but for booleans, if it even exists. It should behave like b = not(b). The interested of this is being able to flip a boolean in a single line when the variable name is very long.
For example, if you have a program where you can turn on|off lamps in a house, you want to avoid writing the full thing:
self.lamps_dict["kitchen"][1] = not self.lamps_dict["kitchen"][1]
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Invert a boolean method or propertyPress Ctrl+Shift+R and then choose Invert Boolean.
To toggle a boolean, use the strict inequality (! ==) operator to compare the boolean to true , e.g. bool !== true . The comparison will return false if the boolean value is equal to true and vice versa, effectively toggling the boolean.
Use the not Operator to Negate a Boolean in Python The not operator in Python helps return the negative or the opposite value of a given boolean value. This operator is used by placing the not operator as a prefix of a given boolean expression. Check the example below. Here, the bool() function is used.
Boolean values are True or False, 1 or 0. Use the words in all caps to represent Boolean values. Ex: TRUE; Use logical functions, like IF, OR, and AND, with Boolean values.
How to toggle a boolean using JavaScript ? A boolean value can be toggled in JavaScript by using two approaches which are discussed below: Method 1: Using the logical NOT operator: The logical NOT operator in Boolean algebra is used to negate an expression or value.
The reverse method compares the parameter b (which represents the user input boolean bn) using a conditional statement to the boolean value true. It returns the boolean value false if this condition is satisfied and returns true if it is not satisfied.
Boolean value false is returned for an input of String a (a=”true”) and vice versa. In the main method, String a is initialized to the value true and String b is initialized to the value false. Within the two print statements, the reverse method is called once per statement.
You can use xor operator (^):
x = True
x ^= True
print(x) # False
x ^= True
print(x) # True
Edit: As suggested by Guimoute in the comments, you can even shorten this by using x ^= 1 but it will change the type of x to an integer which might not be what you are looking for, although it will work without any problem where you use it as a condition directly, if x: or while x: etc.
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