Oct 5, 2016 · bool is a value type, this means that it cannot be null, so the Nullable type basically allows you to wrap value types, and being able to assign null to them. bool? can contain three …

Dec 14, 2019 · The values for a bool are true and false, whereas for BOOL you can use any int value, though TRUE and FALSE macros are defined in the windef.h header. This means that …

I want to filter my dataframe with an or condition to keep rows with a particular column's values that are outside the range [-0.25, 0.25]. I tried: df = df[(df['col'] < -0.25) or (df['col'] &gt...

Sep 26, 2008 · 2 bool is a primitive type, meaning that the value (true/false in this case) is stored directly in the variable. Boolean is an object. A variable of type Boolean stores a reference to a …

May 20, 2011 · How do you convert a nullable bool? to bool in C#? I have tried x.Value or x.HasValue ...

Oct 22, 2009 · 436 bool exists in the current C - C99, but not in C89/90. In C99 the native type is actually called _Bool, while bool is a standard library macro defined in stdbool.h (which …

Apr 16, 2014 · bool allTrue = true; allTrue = allTrue && check_foo(); allTrue = allTrue && check_bar(); check_bar() will not be evaluated if check_foo() returned false. This is called …

Jul 5, 2011 · In C++, is there any difference between doing && (logical) and & (bitwise) between bool (s)? bool val1 = foo(); bool val2 = bar(); bool case1 = val1 & val2; bool case2 = val1 && …

In C++, why is the bool type 8 bits long (on my system)? Only one bit is enough to hold the Boolean value. I used to believe it was for performance reasons, but then on a 32 bits or 64 …

Nov 4, 2011 · A bool takes in real 1 bit, as you need only 2 different values. However, when you do a sizeof (bool), it returns 1, meaning 1 byte. For practical reasons, the 7 bits remaining are …