Line b problem parsing xml; 'null' is null or not an object?

Answer operator error

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What is a serial null cable?

An RS-232 serial null cable (also called a null modem cable or null modem adapter) is a special type of serial cable that allows a computer to connect directly to another computer. The wiring in a ... Read More »

What Is a Null Modem Cable?

A null modem cable allows two devices, such as two personal computers, to communicate directly to each other without any additional hardware. The simplest configuration has the transmit and receive... Read More »

What is a null pointer exception?

A pointer is a variable in a program that references or "points to" a memory location where an object or a piece of data is stored. A null pointer is a variable that should point to a location wher... Read More »

What Is the Meaning of "Null & Void"?

The term "null and void" is used in situations such as legal contracts, real estate deals, investment promises and political proposals or bills. Many argue that the words mean exactly the same. How... Read More »