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C++ is known to be a very powerful language. C++ allows you to have a lot of control as to how you use computer resources, so in the right hands, its speed and ability to cheaply use resources should be able to surpass other languages. Thanks to C++'s performance, it is often used to develop game engines, games, and desktop apps. Many AAA title video games are built with C++.C++'s greatest strength is how scalable it could be, so apps that are very resource intensive are usually built with it. As a statically typed language, C++ is generally more performant ... Read More
The notable differences between concat() method and +operator are:concat() method+operatorYou cannot concat a null value to a String using the concat() method.You can concat null value using the ‘+’ operator.Using the concat() method you can concat only two String variables.Using the ‘+’ operator you can concat multiple values.Using the concat() method you can concat only String type of arguments.Using the ‘+’ operator you can concat any type of arguments.
HashMap is non-syncronized and is not thread safe while HashTable is thread safe and is synchronized. HashMap allows one null key and values can be null whereas HashTable doesn't allow null key or value. HashMap is faster than HashTable. HashMap iterator is fail-safe where HashTable iterator is not fail-safe. HashMap extends AbstractMap class where HashTable extends Dictionary class.
It is not possible to exit from an if block of Python code. The break keyword does appear in if block but it has to inside a loop. It is however possible to exit from entire program from inside if block by sys.exit()
Actually, we need to perform flush-privileges operation to tell the server to reload the grant tables. This can be done by issuing FLUSH PRIVILEGES statement or by executing a mysqladmin flush-privileges or mysqladmin reload command. FLUSH PRIVILEGES is really needed if we modify the grant tables directly using such as INSERT, UPDATE or DELETE, the changes have no effect on privileges checking until we either restart the server or tell it to reload the tables. But, Privileges assigned through GRANT choice don't want FLUSH PRIVILEGES to take effect - MySQL server cannotice these changes and reload the grant tables instantly. ... Read More
You can use JSTL, JSP Standard Tag Library or EL, Expression Language to avoid scriptlets.
When you store a String asString str1 = "Hello";directly, then JVM creates a String object with the given value in a separate block of memory known as String constant pool.And whenever we try to create another String asString str2 = "Hello";JVM verifies whether any String object with the same value exists in the String constant pool, if so, instead of creating a new object JVM assigns the reference of the existing object to the new variable.And when we store String asString str = new String("Hello");using the new keyword, a new object with the given value is created irrespective of the ... Read More
You can install SAP HANA studio on Linux platform without Root user. In Windows platform, you can perform the installation without administration rights but it will be available only to the user who has installed it.Default Location on Window Platform: C:\Program Files\sap\hdbstudioDefault installation Location under MAC OS: /Applications/sap/hdbstudio (old) or /Applications/sap/hdbstudio.app (new)Default installation Linux x86 64 bit: /usr/sap/hdbstudio
With the help of CHARSET() function, we can check which string is returned by MySQL CHAR() function. Following result set will demonstrate it − mysql> Select CHARSET(CHAR(85)); +-------------------+ | CHARSET(CHAR(85)) | +-------------------+ | binary | +-------------------+ 1 row in set (0.00 sec)
In Java immutable objects are those whose data can’t be changed or modified (once modified). String class is immutable i.e. once we create a String object its data cannot be modified.