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How to check 'undefined' value in jQuery
...ks because val always exists (it's a function argument).
If you wanted to test an arbitrary variable that is not an argument, i.e. might not be defined at all, you'd have to use if(typeof val === 'undefined') to avoid an exception in case val didn't exist.
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How to write a scalable Tcp/Ip based server
...don't know why this is the highest voted answer. Begin* End* is not the fastest way of doing networking in C#, nor the most highly scalable. It IS faster than synchronous, but there are a lot of operations that go on under the hood in Windows that really slow down this network path.
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AWS S3 copy files and folders between two buckets
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@dukedave I don't know and have not tested again in quite a while as I resorted to doing the copying via the command line as that worked perfectly.
– RunLoop
Jun 13 '18 at 4:51
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Greenlet Vs. Threads
...t to spawn 60000 native threads or processes to complete the work and this test shows nothing (also did you take the timeout off of the gevent.joinall() call?). Try using a thread pool of about 50 threads, see my answer: stackoverflow.com/a/51932442/34549
– zzzeek
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How can I create tests in Android Studio?
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This answer is for people who are just getting started with Android testing. I will provide two simple examples to help you see how testing works. If you follow along for the next 10 minutes, you will be all set up to start adding your tests to your own app. I think you'll be surprised how ea...
Interfaces — What's the point?
...o that your front end would be written once and (here's the important bit) tested, and you can then plug in further back end items as required:
interface ICreature
{
void Walk(int distance)
}
public class Troll : ICreature
public class Orc : ICreature
//etc
Front end is then:
void SpawnCr...
Generic deep diff between two objects
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I wrote a little class that is doing what you want, you can test it here.
Only thing that is different from your proposal is that I don't consider
[1,[{c: 1},2,3],{a:'hey'}]
and
[{a:'hey'},1,[3,{c: 1},2]]
to be same, because I think that arrays are not equal if order of their eleme...
Iterate two Lists or Arrays with one ForEach statement in C#
...ir<T, U>(default(T), secondEnumerator.Current);
}
}
static void Test()
{
IList<string> names = new string[] { "one", "two", "three" };
IList<int> ids = new int[] { 1, 2, 3, 4 };
foreach (KeyValuePair<string, int> keyValuePair in ParallelEnumerate(names, ids)...
Multiple returns from a function
...ill run. If you need to return multiple values, return an array:
function test($testvar) {
return array($var1, $var2);
}
$result = test($testvar);
echo $result[0]; // $var1
echo $result[1]; // $var2
share
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How do i find out what all symbols are exported from a shared object?
...ts table:
Name: pcre.dll
Characteristics: 00000000
TimeDateStamp: 53BBA519 Tue Jul 8 10:00:25 2014
Version: 0.00
Ordinal base: 1
# of functions: 31
# of Names: 31
Addresses of functions: 000375C8
Addresses of name ordinals: 000376C0
Addresses of names: 0...