How are booleans formatted in Strings in Python?
I see I can’t do: “%b %b” % (True, False) in Python. I guessed %b for b(oolean). Is there something like this? 6 Answers 6
boolean
Why is a boolean 1 byte and not 1 bit of size?
In C++, Why is a boolean 1 byte and not 1 bit of size? Why aren’t there types like a 4-bit or 2-bit integers? I’m missing out the above things when writing an emulator for a CPU 13 Answers 13
Converting string “true” / “false” to boolean value [duplicate]
This question already has answers here: How can I convert a string to boolean in JavaScript? (98 answers) Closed 9 years ago. I have a JavaScript string containing “true” or “false”. How may I convert it to boolean without using the eval function? 3 Answers 3
Objective-C : BOOL vs bool
I saw the “new type” BOOL (YES, NO). I read that this type is almost like a char. For testing I did : NSLog(@”Size of BOOL %d”, sizeof(BOOL)); NSLog(@”Size of bool %d”, sizeof(bool)); Good to see that both logs display “1” (sometimes in C++ bool is an int and its sizeof is 4) So I … Read more
PHP – Get bool to echo false when false
The following code doesn’t print out anything: $bool_val = (bool)false; echo $bool_val; But the following code prints 1: $bool_val = (bool)true; echo $bool_val; Is there a better way to print 0 or false when $bool_val is false than adding an if statement? 13 Answers 13
What is the difference between & and && in Java?
I always thought that && operator in Java is used for verifying whether both its boolean operands are true, and the & operator is used to do Bit-wise operations on two integer types. Recently I came to know that & operator can also be used verify whether both its boolean operands are true, the only … Read more
JS generate random boolean
Simple question, but I’m interested in the nuances here. I’m generating random booleans using the following method I came up with myself: const rand = Boolean(Math.round(Math.random())); Whenever random() shows up, it seems there’s always a pitfall – it’s not truly random, it’s compromised by something or other, etc. So, I’d like to know: a) Is … Read more
bash “if [ false ];” returns true instead of false — why?
Why does the following output True? #!/bin/sh if [ false ]; then echo “True” else echo “False” fi This will always output True even though the condition would seem to indicate otherwise. If I remove the brackets [] then it works, but I do not understand why. 6 Answers 6
Cleanest way to toggle a boolean variable in Java?
Is there a better way to negate a boolean in Java than a simple if-else? if (theBoolean) { theBoolean = false; } else { theBoolean = true; } 9 Answers 9
How to count the number of true elements in a NumPy bool array
I have a NumPy array ‘boolarr’ of boolean type. I want to count the number of elements whose values are True. Is there a NumPy or Python routine dedicated for this task? Or, do I need to iterate over the elements in my script? 6 Answers 6
