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Why do people say there is modulo bias when using a random number generator?
... or a similar ranged solution for your platform (such as Random.nextInt on Java). It will do the right thing at no code cost to you. This is almost always the correct call to make.
If you don't have arc4random_uniform, then you can use the power of opensource to see exactly how it is implemented on...
Make EditText ReadOnly
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According to the Javadoc, the editable attribute does not appear to be deprecated (at least, not as of API level 23).
– Greg Brown
Apr 5 '16 at 13:25
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Regular expression for a hexadecimal number?
...ter: ^[0-9A-F]+$ It can also recognize hex patterns like: '535GH0G73' For Java, we can use e.g String.matches() for checking this.. Thank you guys for the response :)
– saurcery
Feb 10 '12 at 2:23
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JPA CascadeType.ALL does not delete orphans
...ct when I remove it from it's parent's collection. See download.oracle.com/javaee/6/tutorial/doc/bnbqa.html#giqxy
– Archie
Sep 13 '10 at 22:37
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Single Sign On across multiple domains [closed]
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OpenSSO is dead and JOSSO and CAS are JAVA solutions. Just an FYI
– OneHoopyFrood
Jun 11 '15 at 23:24
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Difference between spring @Controller and @RestController annotation
...thing more than adding the @Controller and @ResponseBody annotations (see: Javadoc)
So the following two controller definitions should do the same
@Controller
@ResponseBody
public class MyController { }
@RestController
public class MyRestController { }
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Lua string to int
...into a number, and then truncate the number like an (int) cast would do in Java.
Edit: This still works in Lua 5.3, even thought Lua 5.3 has real integers, as math.floor() returns an integer, whereas an operator such as number // 1 will still return a float if number is a float.
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How do I create a simple 'Hello World' module in Magento?
...mmer or don't have access to an experienced programmer (ideally in PHP and Java), pick another cart. Magento is well engineered, but it was engineered to be a shopping cart solution that other programmers can build modules on top of. It was not engineered to be easily understood by people who are sm...
Lock-free multi-threading is for real threading experts
...teresting take on hash tables that does not rely on lock-striping - as the Java and .NET concurrent hash tables do - and seem to scale well to 750 CPUs.
If you are not afraid to venture into Linux territory, the following article provides more insight into the internals of current memory architectu...
Find the number of columns in a table
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Using JDBC in Java:
String quer="SELECT * FROM sample2 where 1=2";
Statement st=con.createStatement();
ResultSet rs=st.executeQuery(quer);
ResultSetMetaData rsmd = rs.getMetaData();
int NumOfCol=0;
NumOfCol=rsm...