There are many great profiling tools for profiling C++ programs on Linux. The most widely used tool is Valgrind. It is a programming tool for memory debugging, memory leak detection, and profiling. You can use valgrind by passing the binary to it and setting the tool to callgrind. First generate ... Read More

The bitwise OR operator (|) compares each bit of first operand to the corresponding bit of second operand. If either bit is 1, the corresponding result bit is set to 1. Otherwise, the corresponding result bit is set to 0. Both operands to the bitwise inclusive OR operator must be ... Read More

The equality operators in C++ are is equal to(==) and is not equal to(!=). They do the task as they are named. The binary equality operators compare their operands for strict equality or inequality. The equality operators, equal to (==) and not equal to (!=), have lower precedence than the ... Read More

C++ provides two pointer operators, which are Address of Operator (&) and Indirection Operator (*). A pointer is a variable that contains the address of another variable or you can say that a variable that contains the address of another variable is said to "point to" the other variable. A ... Read More

Auto was a keyword that C++ "inherited" from C that had been there nearly forever, but virtually never used. All this changed with the introduction of auto to do type deduction from the context in C++11. Before C++ 11, each data type needs to be explicitly declared at compile time, ... Read More

If strict SQL mode is disabled and we insert invalid value (which is not in the list of permitted enumeration values) into ENUM then MySQL will insert an empty string instead of throwing an error. But if strict SQL mode is enabled then MySQL throws an error on inserting invalid ... Read More

It is because there is no dragover event handler; however, default event handler of dragover event is used. After that, no drop event is triggered.e.preventdefault is needed for dragover event before drop event.If you want to allow a drop, then default handler is prevented for canceling the event. This can ... Read More

In this case, MySQL will take into consideration the first value out of two provided in the enclosed set of unit values. It will return the output along with warning after calculating the interval, based on the considered value from an enclosed set, on the unit given in INTERVAL keyword. The ... Read More

Web RTC required peer-to-peer communication between browsers. This mechanism required signalling, network information, session control and media information. Web developers can choose different mechanism to communicate between the browsers such as SIP or XMPP or any two way communications. An example of createSignalingChannel():var signalingChannel = createSignalingChannel(); var pc; var configuration ... Read More

Maybe, you are using += with innerHTML. Try the following:var myNum = [1,2,3]; var myStr; myStr = ""; for( var a in myNum) myStr += "" + a + ""; myStr += ""; id("numberList").innerHTML = myStr;