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Articles on Trending Technologies
Technical articles with clear explanations and examples
Difference between declaring a variable before or in a Java loop.
Performance wise, there is hardly any difference. But it is good to keep a variable local to the scope it is used. So declaring a variable inside Java loop is generally preferred.
Read MoreWhy there is not do...while loop in Python?
PEP 315 (Python Enhancement Proposal) to include do..while statement has been rejected because it doen't fit in the general format of indented block statement: indented block used by every other Python compound statement. In words of Guido Van Rossum - "Please reject the PEP. More variations along these lines won't make the language more elegant or easier to learn. They'd just save a few hasty folks some typing while making others who have to read/maintain their code wonder what it means".
Read MoreAdding system archive link in SAP HANA Studio
To allow users who work in the SAP HANA studio to connect efficiently to multiple SAP HANA systems, you can manage a list of all systems in a centrally-accessible archive. Users can then simply link to this archive.
Read MoreHow to concatenate byte array in java?
You ByteArrayOutputStream to write byte arrays and get the result using its toByteArray() method.import java.io.ByteArrayOutputStream; import java.io.IOException; public class Tester { public static void main(String[] args) throws IOException { byte[] a = { 1,2,3}; byte[] b = { 4,5,6}; ByteArrayOutputStream baos = new ByteArrayOutputStream(); baos.write(a); baos.write(b); byte[] c = baos.toByteArray(); for(int i=0; i< c.length ; i++){ System.out.print(c[i] +" "); } } }Output1 2 3 4 5 6
Read MoreInformation exported using export system in SAP HANA Studio
When you use export option from main menu, it also exports the list of systems and their properties (name, description, host name, instance, and so on) is exported as an XML file to the specified location.
Read MoreWhat does 'using namespace std' mean in C++?
Consider a situation, when we have two persons with the same name, Piyush, in the same class. Whenever we need to differentiate them definitely we would have to use some additional information along with their name, like either the area, if they live in a different area or their mother’s or father’s name, etc.The same situation can arise in your C++ applications. For example, you might be writing some code that has a function called xyz() and there is another library available which is also having same function xyz(). Now the compiler has no way of knowing which version of ...
Read MoreInformation required to connect MS Excel to SAP HANA
Choose SAP HANA MDX Provider from this list to connect to any MDX data source → Enter HANA system details (server name, instance, user name and password) and you need to click on Test Connection → Connection succeeded → OKIt will give you the list of all packages in drop down list that are available in HANA system. You can choose an Information view → click Next → Select Pivot table/others → OK.
Read MoreHow to put two public classes in a Java package.
Yes. The only condition is to have one public class in separate java file.
Read MoreGlobal variables in Java
There is no global variables support in Java. Static variables can be used as an alternate solution for global variables.
Read MoreAtomic variables in Java
Yes, from Java 8 onwards, java.util.concurrent.atomic package contains classes which support atomic operations on single variables preventing race conditions or do not face synchronization issues. All classes in the atomic package have get/set methods. Each set method has a happens-before relationship with any subsequent get() method call on the same variable. import java.util.concurrent.atomic.AtomicInteger; class AtomicCounter { private AtomicInteger counter = new AtomicInteger(0); public void increment() { counter.incrementAndGet(); } public void decrement() { counter.decrementAndGet(); } public int value() { return counter.get(); } }
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