short-circuiting Questions
2
Solved
I am trying to implement hystrix for my application using hystrix-javanica.
I have configured hystrix-configuration.properties as below
hystrix.command.default.execution.isolation.strategy=SEMAPH...
Perineurium asked 22/7, 2016 at 10:33
10
Solved
Sometimes, an if statement can be rather complicated or long, so for the sake of readability it is better to extract complicated calls before the if.
e.g. this:
if (SomeComplicatedFunctionCall() ...
Escheat asked 17/10, 2016 at 8:3
5
Solved
For instance (Lets say we are talking about C++ if that makes a differnce),
In an && operator if I know that one statement will result to 0 more often/has a higher chance then the oth...
Turcotte asked 22/7, 2016 at 17:24
6
Solved
Quick question here about short-circuiting statements in C#. With an if statement like this:
if (MyObject.MyArray.Count == 0 || MyObject.MyArray[0].SomeValue == 0)
{
//....
}
Is it guaranteed t...
Illustrational asked 22/4, 2010 at 15:27
3
Solved
I was messing around with fix and after messing around with it I came across some weird behavior, namely that 0 * undefined is *** Exception: Prelude.undefined and undefined * 0 is 0. Which also me...
Platonism asked 17/3, 2016 at 0:47
8
Solved
What's the equivalent of the following (based in JS style) in PHP:
echo $post['story'] || $post['message'] || $post['name'];
So if story exists then post that; or if message exist post that, etc...
Predicant asked 20/11, 2011 at 18:44
1
Solved
With short circuiting you can prevent the evaluation of part of an expression:
let x = "", y = 123;
x && alert("foo"); // ""
y || alert("bar") // 123
Since the logical ops form expressio...
Luellaluelle asked 2/2, 2016 at 22:38
2
Solved
As far as I understand, short-circuiting with the logical AND && operator works like the following:
Assuming I have the expressions a and b then a && b is the same as a ? b : a si...
Hagiocracy asked 15/12, 2015 at 14:51
1
Solved
Suppose I want to use std::conditional to determine a type, if the type is a vector<...> the return will be a vector<...>::size_type and if not it will be int. (just an example).
...
Pasquil asked 15/12, 2015 at 4:15
0
Consider the following loops:
while((expressionA) & (expressionB)){
// do something
}
while((expressionA) && (expressionB)){
// do something
}
where expressionA and expression...
Falda asked 3/12, 2015 at 8:0
1
Solved
If you have the following:
if (x)
{
y = *x;
}
else
{
y = 0;
}
Then behavior is guaranteed to be defined since we can only dereference x if it is not 0
Can the same be said for:
y = (x) ? *x ...
Viburnum asked 29/10, 2015 at 14:47
1
Solved
I've found in the documentation of case statment that it uses short-circuit:
Oracle Database uses short-circuit evaluation. That is, for a simple
CASE expression, the database evaluates each co...
Extraordinary asked 25/8, 2015 at 10:52
4
Scheme has a short-circuiting or that will return the first non-false value:
> (or 10 20 30)
10
> (or #f 20 30)
20
> (or #f)
#f
It does not evaluate its arguments until needed.
Is ther...
Cyzicus asked 23/2, 2014 at 22:34
2
Solved
I have executed the following code in Code::Blocks 10.05 on Windows 7.
int a=0,b=0,c;
c=a++&&b++;
printf("\na=%d\nb=%d\nc=%d\n\n",a,b,c);
The output I obtained is given below,
a=1
b=0
...
Fennel asked 3/8, 2015 at 4:24
2
Solved
As the evaluation of logical operators && and || are defined as "short circuit", I am assuming the following two pieces of code are equivalent:
p = c || do_something();
and
if (c) {
p ...
Alderman asked 15/7, 2015 at 17:26
4
Solved
I have a question regarding how the compiler evaluates 'AND' condition in c.
Say, I write a statement like
if( (today is Thursday) && (Month is July) )
{
//do something
}
Assume today ...
Hark asked 15/7, 2015 at 17:6
2
Solved
Here is my code :
b = f() || b;
The function f() has side effect and it must be always executed. Normally, only the right operand can be short-circuited and this code should work. But I am...
Hat asked 25/6, 2015 at 14:17
3
Solved
I want to consult SQL Server OR short-circuit
Code:
DECLARE @tempTable table
(
id int
)
INSERT @tempTable(id) values(1)
DECLARE @id varchar(10)
SET @id = 'x'
SELECT * FROM @tempTable WHERE 1=1...
Paella asked 27/6, 2012 at 5:13
6
Solved
As I was reading a colleague's Java code, I stumbled upon an army of if/else statements. In these statements, several && and || operators were fighting each other without any help from pare...
Sedgemoor asked 4/5, 2015 at 14:44
2
Solved
What does this line parent && (this.parent.next = this); mean?
It just looks like its sitting there, doing nothing, not an if statement or a promise or anything. Is there a name for t...
Felike asked 15/4, 2015 at 19:49
2
Solved
Preparing for the Oracle Certified Associate Java SE 8 Programmer 1 exam, I came across the following paragraph about the ternary expression in the official Study Guide:
Ternary Expression Evalu...
Mechanistic asked 10/4, 2015 at 8:48
17
Solved
In the PHP code
if(a() && b())
when the first operand evaluates to false, b() will not be evaluated.
Similarly, in
if (a() || b())
when the first operand evaluates to true, b() will...
Dmz asked 5/8, 2009 at 11:16
5
I have a function similar to the following:
def check
return 2 == 2 || 3 != 2 || 4 != 5
end
My question is, will Ruby perform all the comparisons even though the first is true, and thus the fun...
Anhwei asked 11/3, 2011 at 21:10
1
Solved
I have a function handle that operates on 2d arrays of arbitrary size:
R2T = @(DL1,DL2) arrayfun(@(DL1,DL2)...
1/(fzero(@(x)fFitObj1(x)./fFitObj2(x)-...
DL1./DL2,[minLim maxLim])) ...
,DL1,DL2) ...
Ezzell asked 1/3, 2015 at 19:6
3
Solved
I read the C# Language Specification on the Conditional logical operators || and &&, also known as the short-circuiting logical operators. To me it seemed unclear if these existed for nulla...
Heckman asked 16/12, 2014 at 16:11
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