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Preferred Java way to ping an HTTP URL for availability
...dress.getByName(hostname).isReachable();
This however doesn't explicitly test port 80. You risk to get false negatives due to a Firewall blocking other ports.
Do I have to somehow close the connection?
No, you don't explicitly need. It's handled and pooled under the hoods.
I suppose ...
Can you split a stream into two streams?
...rayList<>(100000)),
(map, value) -> map.get(predicate.test(value)).add(value),
(map1, map2) -> {
map1.get(false).addAll(map2.get(false));
map1.get(true ).addAll(map2.get(true ));
});
In this example I initialize the Ar...
What does the star operator mean, in a function call?
...ou want to 'store' a function call.
For example, suppose I have some unit tests for a function 'add':
def add(a, b): return a + b
tests = { (1,4):5, (0, 0):0, (-1, 3):3 }
for test, result in tests.items():
print 'test: adding', test, '==', result, '---', add(*test) == result
There is no other...
How to change the value of ${user} variable used in Eclipse templates
...
The -Duser.namemust come after the -vmargs flag (tested with Eclipse Mars).
– Jan Chimiak
Mar 12 '16 at 16:58
2
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How can you detect the version of a browser?
...You can see what the browser says, and use that information for logging or testing multiple browsers.
navigator.sayswho= (function(){
var ua= navigator.userAgent, tem,
M= ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
if(/trident/i.test(M[1])){
...
Invalid postback or callback argument. Event validation is enabled using '
...
One more option: implement IPostBackEventHandler and call js __doPostBack('<%= UniqueId.ToString() %>',arg)
– gdbdable
May 22 '14 at 7:11
...
Constructor initialization-list evaluation order
...ped aborting. This is an example of the syntax I'm using. The thing is, a_ needs to be initialized before b_ in this case. Can you guarantee the order of construction?
...
How can I change the copyright template in Xcode 4?
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__MyCompanyName__ being ugly (or if you aren't coding for the company set up in your profile), let's change it.
Click on your project root in the Project Navigator on the left
Enable your Utilities view on the right while t...
How can I filter a Django query with a list of values?
...
From the Django documentation:
Blog.objects.filter(pk__in=[1, 4, 7])
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XPath contains(text(),'some string') doesn't work when used with node with more than one Text subnod
...mment on if there is a fundamental difference, preferably with some simple test cases between the answer given by Ken Bloom and //*[contains(., 'ABC')]. I had always used the pattern given by Mike Milkin, thinking it was more appropriate, but just doing contains on the current context seems to actua...