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Can an int be null in Java?
...be checked for null, however, you can safely assign null to int in Java by casting it to Integer, for example if the check(root) method can return null then you can safely cast it to int by doing something like this: int data = (Integer)check(node);
– sactiw
O...
Exploitable PHP functions
...lowed. Rather, I'd like to have a grep -able list of red-flag keywords handy when searching a compromised server for back-doors.
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How do I pass a class as a parameter in Java?
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public void callingMethod(Class neededClass) {
//Cast the class to the class you need
//and call your method in the class
((ClassBeingCalled)neededClass).methodOfClass();
}
To call the method, you call it this way:
callingMethod(ClassBeingCalled.class);
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How to add parameters to HttpURLConnection using POST using NameValuePair
... with HttpURLConnection (I need to use it this way, can't use HttpPost ) and I'd like to add parameters to that connection such as
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Why does multiprocessing use only a single core after I import numpy?
...er here.
It turns out that certain Python modules (numpy, scipy, tables, pandas, skimage...) mess with core affinity on import. As far as I can tell, this problem seems to be specifically caused by them linking against multithreaded OpenBLAS libraries.
A workaround is to reset the task affinity us...
Where is Maven' settings.xml located on mac os?
... edited Jun 24 '14 at 19:51
Andy♦
40.3k2424 gold badges139139 silver badges202202 bronze badges
answered Jun 24 '14 at 19:48
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Is there a way to avoid null check before the for-each loop iteration starts? [duplicate]
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@Dataknife More like it just does the casting for you. There are no generics types at runtime with either case, and the implementation of emptyList() internally contains the cast (with a suppression on unchecked too).
– Edwin Buck
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How do I drag and drop files into an application?
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Is the (string[]) cast safe for any FileDrop-formatted drop? That is, is it possible to generate a FileDrop that will cause an illegal cast exception to string[]? I'm having trouble figuring that out from the docs.
– kd...
SQL error “ORA-01722: invalid number”
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Here's one way to solve it. Remove non-numeric characters then cast it as a number.
cast(regexp_replace('0419 853 694', '[^0-9]+', '') as number)
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How to copy a selection to the OS X clipboard
...this might not work for you, but if you have Vim-version 7.4 then it does (and sometimes you don't even have to do the whole "+y ). And you check this by just writing >vim in the terminal and then the version-number is when you start it up.
– Zeth
Sep 9 '1...