Questions tagged [boolean]
The boolean tag has no summary.
70 questions
7
votes
8
answers
946
views
Why is "one function do more than one thing" a disadvantage of "boolean parameter", but not in "polymorphism"?
According to Is it wrong to use a boolean parameter to determine behavior?, I know using boolean parameters to decide the behaviour is bad, for example, when using boolean parameters as the following:
...
- 3,003
0
votes
3
answers
253
views
Is "the boolean value is from dynamic loaded data (eg:user input, database)" a reason to use boolean parameter?
I know there are some questions about boolean flags: Is it wrong to use a boolean parameter to determine behavior?, Multiple boolean arguments - why is it bad? which indicates the following code is ...
- 3,003
3
votes
2
answers
6k
views
how to name functions that return booleans
I like the practice of naming boolean variables with a prefix like "is", "has", "should", or "can".
But what about the functions that produce those results?
...
- 167
0
votes
2
answers
548
views
How to Represent Functional Boolean
.NET Boolean type usually makes if else pair all over the code.
Functional Boolean should be more like Either type. Ideally represented as Either<Unit, Unit>.
However, my issues with Either type ...
- 109
4
votes
5
answers
421
views
Using dedicated functions for opposites/inverse
I have a disagreement with one of my colleagues on whether or not functions should have inverse functions available.
I would like to know when/if inverse functions should be used.
For example, say we ...
- 346
3
votes
5
answers
1k
views
When to extract boolean conditions into their own function?
I commonly use a boolean condition/variable when it's something too big or complicated and takes too much space by itself inside ifs - basically to avoid repeatability and thus improve readability. E....
- 47
1
vote
6
answers
4k
views
Naming boolean fields in classes
I have had hard times naming boolean fields.
On the one hand, i've read that it is good to name them as affirmative statements, like hasAge, or canDance. It's not a problem when naming local ...
- 179
-1
votes
1
answer
333
views
Better stdbool.h
How about instead of
#define bool _Bool
#define true 1
#define false 0
#define __bool_true_false_are_defined 1
We should have this:
#define bool _Bool
#define true (bool)1
#define false (bool)0
#...
user356583
11
votes
2
answers
511
views
Is it possible to test if/else trees properly without coding to the implementation?
I have been writing tests for a lot of long if/else trees recently, and I'm finding it a little discouraging. I want to speak in concrete terms, so consider the following example (I'll write in Ruby ...
- 218
1
vote
8
answers
4k
views
Is there a use case for boolean parameters? [closed]
Most programmers (including me) believe that methods with a boolean flag parameter should be refactored into two methods without the flag parameter. Are there any use cases for a boolean parameter ...
- 669
40
votes
8
answers
11k
views
Is a new Boolean field better than a null reference when a value can be meaningfully absent?
For example, suppose I have a class, Member, which has a lastChangePasswordTime:
class Member{
.
.
.
constructor(){
this.lastChangePasswordTime=null,
}
}
whose lastChangePasswordTime ...
- 5,760
5
votes
7
answers
4k
views
Can I use Boolean algebra to reduce the number of lines in my code?
I am recently studying computer science and I was introduced into Boolean algebra. It seems that Boolean algebra is used to simplify logic gates in hardware in order to make the circuit design minimal ...
- 169
5
votes
3
answers
9k
views
Is it necessary for a boolean to be "false" by default?
For example, to store whether sound is on, I have a boolean originally named "isSoundOn":
private boolean isSoundOn=true;
however, the default value of boolean is false, but I want my application to ...
- 5,760
-1
votes
1
answer
80
views
How to mimic an event system with a boolean system
In a boolean system, say you have a while loop going on. Then you might have this:
if (just_did_x) {
do_something()
}
To prevent it calling do_something() more than once, you might do:
if (...
- 2,787
0
votes
1
answer
199
views
Data-binding for Boolean values
Wondering if there is anything closely resembling data-binding but for boolean values / triggers. It seems like it could be related to Binary Decision Diagrams (BDDs), but they are precomputed rather ...
- 2,787