Technology Questions

The differences in responsibilities are listed below:

- QA is concern for Process Quality and Programmers are concern for Product Quality.

- QA ensure that the processes used for developing the product of high quality where as programmers used these processes so that end product is of good quality.

- Processes are decided by QA. Programmers are supposed to follow the processes so that they can produce a good quality product.

- Any issue found during execution of process by the programmers is communicated to the QA so that they can improve the process.

Multiple inheritance is not supported directly but it is achieved through the concept of Interface

Error-first callbacks are used to pass errors and data as well. You have to pass the error as the first parameter, and it has to be checked to see if something went wrong. Additional arguments are used to pass data.

fs.readFile(filePath, function(err, data) {
if (err) {
// handle the error, the return is important here
// so execution stops here
return console.log(err)
}
// use the data object
console.log(data)
})

HashCode method return int value. So the Hash value is the int value returned by the hash function .

If you want to do equality check or want to use your object as key in HashMap, we must override hashcode and equals() method.

By using two types of function modules to be called in SAP Script:

1)HELP_OBJECT_SHOW_FOR_FIELD
2)HELP_OBJECT_SHOW

Asc() - Returns ANSI Character Code 

Chr() - Returns Character from ANSI Code 

InStr() - Find a string within another 

InStrRev() - Find a string within another (Reverse) 

LCase() - Convert a string to lowercase 

Left() - Crops a string from left 

Len() - Determine the length of a string 

LTrim() - Remove leading spaces from a string 

Mid() - Crops a string 

Replace() - Replace a substring within a string 

Right() - Crops a string from right 

RTrim() - Remove trailing spaces from a string 

Space() - Creates a string with the specified number of spaces 

StrComp() - Compare two strings 

String() - Creates a repeated character string 

StrReverse() - Reverse the characters of a string 

Trim() - Remove both leading and trailing spaces from a string 

UCase() - Convert a string to uppercase