logical-operators Questions
8
Solved
In my program, I have a statement like the following, inside a loop.
y = (x >= 1)? 0:1;
However, I want to avoid using any relational operator, because I want to use SIMD instructions, and am...
Inez asked 29/4, 2017 at 9:0
4
Solved
I am aware that AND corresponds to & and NOT, ~. What is the element-wise logical OR operator? I know "or" itself is not what I am looking for.
Medea asked 16/7, 2014 at 8:19
9
Solved
I would like to write a statement in python with logical implication.
Something like:
if x => y:
do_sth()
Of course, I know I could use:
if (x and y) or not x:
do_sth()
But is there a lo...
Overture asked 6/5, 2013 at 19:34
3
Solved
Is there no XOR operator for booleans in golang?
I was trying to do something like b1^b2 but it said it wasn't defined for booleans.
Loathsome asked 12/4, 2014 at 3:22
21
Why is there no logical XOR in JavaScript?
Dabney asked 27/12, 2010 at 17:15
12
Solved
Is there such a thing? It is the first time I encountered a practical need for it, but I don't see one listed in Stroustrup. I intend to write:
// Detect when exactly one of A,B is equal to five.
...
Ume asked 20/10, 2009 at 19:1
2
When I use the following minimal code in an C++ console application in Visual Studio 2019, I get two warnings, which are completely opposite.
int main()
{
unsigned char op1 = 0x1;
unsigned char o...
Defendant asked 25/8, 2023 at 10:7
2
Solved
What's the difference between "&&" and "and" in kotlin?
in my code, when first condition is false, i've noticed that the condition after "and" is still evaluat...
Vue asked 1/8, 2023 at 2:49
3
Solved
For most operators that might overflow, Rust provides a checked version. For example, to test if an addition overflows one could use checked_add:
match 255u8.checked_add(1) {
Some(_) => println...
Norway asked 22/8, 2020 at 15:3
5
What is the difference between & and && in C?
My teacher gave me this example:
int a = 8;
int b = 4;
printf("a & b = %d\n", a & b);
printf("a && b = %d\n", a &&...
Brewer asked 2/4, 2018 at 19:1
4
Solved
According to the R language definition, the difference between & and && (correspondingly | and ||) is that the former is vectorized while the latter is not.
According to the help text,...
Ascribe asked 2/7, 2011 at 18:48
4
Solved
I have three boolean values. I need to return false if all three are true or if all three are false. I will return true in every other situation. Based on my research, in some specifications this i...
Allerus asked 31/8, 2018 at 5:23
6
Solved
In JavaScript
(f1() || f2())
won't execute f2 if f1 returns true which is usually a good thing except for when it isn't. Is there a version of || that doesn't short circuit?
Something like
var...
Inspire asked 13/4, 2011 at 16:18
5
Solved
Consider the following list of Boolean values in Scala
List(true, false, false, true)
How would you using either foldRight or foldLeft emulate the function of performing a logical AND on all of ...
Saleable asked 19/3, 2014 at 21:44
2
Solved
Iam using searchkick library as an elasticsearch client for Product searching.
https://github.com/ankane/searchkick
It is possible to create 'OR' condition and 'AND' condition;
AND operation
Prod...
Kisser asked 8/1, 2015 at 6:0
12
Solved
I have a quick question about using logical operators in an if statement.
Currently I have an if statement that checks if x equals to 5 or 4 or 78:
if ((x == 5) || (x == 4) || (x == 78)) {
blah
}...
Parik asked 16/3, 2011 at 3:16
5
Solved
Are the two statements below equivalent?
SELECT [...]
FROM [...]
WHERE some_col in (1,2,3,4,5) AND some_other_expr
and
SELECT [...]
FROM [...]
WHERE some_col in (1,2,3) or some_col in (4,5) AND...
Wernher asked 6/8, 2009 at 20:15
4
Solved
a + b = c
c - a = b
Ok, now
a & b = c
c ?? a = b
which operator replace "??" ?
Thanks
Towhaired asked 26/3, 2014 at 13:56
3
Solved
In this search query (test it live ↗) I'm searching for:
all pull requests
by user limonte (me)
for the vaadin company
How can I search for all my pull requests except (logical NOT) those fo...
Ram asked 4/4, 2017 at 8:4
7
Solved
I'm working with Ruby on Rails and would like to validate two different models :
if (model1.valid? && model2.valid?)
...
end
However, "&&" operator uses short-circuit evaluation ...
Oidea asked 28/1, 2009 at 9:58
9
Solved
I'm learning Java, coming from C and I found an interesting difference between languages with the boolean type. In C there is no bool/ean so we need to use numeric types to represent boolean logic ...
Cubit asked 10/12, 2012 at 17:29
4
Solved
Came across couple of scenarios that one would want to pass operators as a parameter in a function or a method. According to this post Java doesn't have that ability, hence need to create an Enum a...
Legate asked 23/1, 2013 at 14:52
15
Solved
Is it possible in Handlebars to check if a string is equal to another value without registering a helper? I can't seem to find anything relevant to this in the Handlebars reference.
For example:
...
Microseism asked 13/12, 2015 at 15:37
2
Solved
I have become incredibly confused over logical expressions in R. The following command gives me the expected result since 1 is equal to 1 or equal to 2:
> 1 == (1 | 2)
[1] TRUE
But on the oth...
Kob asked 11/12, 2015 at 6:33
6
In Ruby you can easily set a default value for a variable
x ||= "default"
The above statement will set the value of x to "default" if x is nil or false
Is there a similar shortcut in PHP or do...
Inviolable asked 2/10, 2008 at 15:42
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