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What does the “|” (single pipe) do in JavaScript?
... 1 0 = 10 (8 + 2)
=======
1 1 1 0 = 14 (8 + 4 + 2)
Bitwise ORing 6 and 10 will give you 14:
alert(6 | 10); // should show 14
Terribly confusing!
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How to specify id when uses include in layout xml file
...out xml file, I have included other layout xml file (each
with a different android id).
11 Answers
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How can I check for “undefined” in JavaScript? [duplicate]
.../ true
As @CMS pointed out, this has been patched in ECMAScript 5th ed., and undefined is non-writable.
if (window.myVar) will also include these falsy values, so it's not very robust:
false
0
""
NaN
null
undefined
Thanks to @CMS for pointing out that your third case - if (myVariable) can als...
Who is calling the Java Thread interrupt() method if I'm not?
I've read and re-read Java Concurrency in Practice, I've read several threads here on the subject, I've read the IBM article Dealing with InterruptedException and yet there's something I'm simply not grasping which I think can be broken down into two questions:
...
PHP function to make slug (URL string)
...t to have a function to create slugs from Unicode strings, e.g. gen_slug('Andrés Cortez') should return andres-cortez . How should I do that?
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Postgresql: Scripting psql execution with password
...ve/libpq-envars.html
There is no option to provide the password as a command line argument because that information is often available to all users, and therefore insecure. However, in Linux/Unix environments you can provide an environment variable for a single command like this:
PGPASSWORD=your...
How to find out if an item is present in a std::vector?
... @bobobobo: OOP has nothing to do with members vs. non-members. And there is a widespread school of thought that if something does not have to be a member, or when it does not give any advantage when implemented as a member, than it should not be a member; std::vector<>::find() woul...
jQuery.active function
... in the library, it seems to be there exclusively to support $.ajaxStart() and $.ajaxStop() (which I'll explain further), but they only care if it's 0 or not when a request starts or stops. But, since there's no reason to hide it, it's exposed to you can see the actual number of simultaneous AJAX r...
Can you use @Autowired with static fields?
...ou find old code doing this, it's an anti-pattern. Squint, tilt your head, and find a better way to solve the problem. You'll be glad you did.
– Joseph Lust
Apr 18 '13 at 18:05
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rotating axis labels in R
...round 45 degrees to strike a good balance between readability (horizontal) and space efficiency (vertical).
– jmb
Aug 25 '19 at 19:31
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