and-operator Questions
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
2
I'm trying to cache the request based on the response header.
Right now my desire condition is if the response has both 2 headers client-device and client-location, then the response should be cach...
Jene asked 11/9, 2019 at 4:23
7
Solved
I know that in JavaScript you can do:
var oneOrTheOther = someOtherVar || "these are not the droids you are looking for...";
where the variable oneOrTheOther will take on the value of the first ...
Hippopotamus asked 2/7, 2010 at 5:25
5
Solved
I can't get the & operator to work in an Angular ng-if expression (to use with some bit flags). Suppose we have some HTML like this:
<div ng-if="value & 2"> </div>
If value e...
Maccaboy asked 2/9, 2016 at 14:33
7
Solved
I have a php code as shown below in which I want to display anything in between two calendar days of the week.
The values coming inside $data->{"select_start_day"}; $data->{"start_time"}; $...
Huoh asked 29/9, 2019 at 2:27
2
Solved
Sample data
files.in.path = c("a.4.0. name 2015 - NY.RDS",
"b.4.0. name 2016 - CA.RDS",
"c.4.0. name 2015 - PA.RDS")
strings.to.find = c("4.0", "PA")
I want the logical vector that shows all...
Aver asked 11/9, 2016 at 18:19
4
Solved
Based on this answer
Regular Expressions: Is there an AND operator?
I tried the following on http://regexpal.com/ but was unable to get it to work. What am missing? Does javascript not support it...
Jemappes asked 14/6, 2010 at 22:13
3
#include <stdio.h>
void main()
{
int x = 1, y = 0, z = 5;
int a = x && y || z++;
printf("%d", z);
}
This yields output as 6 whereas
#include <stdio.h>
void main()
{
int x...
Venavenable asked 27/12, 2015 at 19:11
3
Solved
So i have this form..
With 2 fields. "Youtube" and "link" I want to do if you have filled in YouTube, it should do this:
if(!empty($youtube)) {
if ($pos === false) {
echo "Du skal indtaste yout...
Lamori asked 27/2, 2010 at 10:57
5
Solved
I'm trying to improve my coding ninja h4x skills, and I'm currently looking at different frameworks, and I have found sample code that's pretty hard to google.
I am looking at the FUEL framework u...
Sypher asked 5/10, 2011 at 17:17
5
Solved
I saw somewhere else said,
x && foo();
is equal to
if(x){
foo();
}
I tested it and they really did the same thing.
But why? What exactly is x && foo()?
Strop asked 7/8, 2011 at 2:32
4
Solved
I was directed to this website by a friend.
I am trying to use and in Delphi, but I seem to be doing something wrong. Is there something you need to put in uses?
I have the following code:
proce...
Astrophotography asked 30/3, 2011 at 15:38
7
Solved
When encountering a (bool1 && bool2), does c++ ever attempts to check bool2 if bool1 was found false or does it ignore it the way PHP does?
Sorry if it is too basic of a question, bu...
Eolanda asked 6/3, 2011 at 17:5
10
Solved
Does Java check all arguments in "&&" (and) operator even if one of them is false?
I have such code:
if(object != null && object.field != null){
object.field = "foo";
}
Assume that object is null.
Does this code result in nullPointerException or just if statement wo...
Denticle asked 12/11, 2010 at 10:36
2
Solved
Why I can't redefine the __and__ operator?
class Cut(object):
def __init__(self, cut):
self.cut = cut
def __and__(self, other):
return Cut("(" + self.cut + ") && (" + other.cut + ")")
...
Merri asked 19/4, 2010 at 15:29
5
Solved
I have a question regarding the and/&&/= keywords in Ruby.
The ruby docs say that the precedence for the mentioned keywords is: (1)&&, (2)=, (3)and.
I have this snippet of c...
Unshackle asked 3/12, 2009 at 15:12
1
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