What is persistence, Computer Engineering

Assignment Help:

What is Persistence

When you make an object, it exists for so long as you need it, but under no circumstances object exist when program terminates. While this makes sense at start, there is condition in which it would be incredibly helpful if an object could exist and keep its information even while program is not running. When, next time you start program, object will be there and it will have the same information as it had previously when program was running. Of course, you can get  same effect by writing information or to a file, but in spite of making everything an object it will be quite convenient to be able to declare an object persistent and have all details taken care of for you.

 


Related Discussions:- What is persistence

Conversion of bcd number to binary using a procedure, Q. Conversion of BCD ...

Q. Conversion of BCD number to binary using a procedure? Conversion of BCD number to binary using a procedure. Algorithm for conversion procedure: Take a packed BCD digit

Interfacing of keyboards, Q. Interfacing of keyboards? The keyboard emp...

Q. Interfacing of keyboards? The keyboard employs a special Input/output port which is similar to a serial port however doesn't explicitly follow the RS-232 serial port standar

How many number of flip flops contained in IC 7490, The number of flip flop...

The number of flip flops contained in IC 7490 is ? Ans. 2 flip flops contained in IC 7490.

What is asynchronous transmission, What is asynchronous transmission An...

What is asynchronous transmission An asynchronous transmission technique used in many interactive terminals employ special bits. With this method each character consists of thr

What do you mean by interrupts, Q. What do you mean by Interrupts? The ...

Q. What do you mean by Interrupts? The term interrupt is an exceptional event which causes CPU to temporarily transfer its control from presently executing program to a separat

Engineering maths, calculate dy/dx if y=[x-cos(1/cos(xe/2x))]/x

calculate dy/dx if y=[x-cos(1/cos(xe/2x))]/x

Requirements of decision support system, Q. Requirements of decision suppor...

Q. Requirements of decision support system? a) Fast computation A decision maker is able to perform a large number of computations very quickly and that too at a low cost

Discuss briefly subscriber loop system, Discuss briefly subscriber loop sys...

Discuss briefly subscriber loop system. Subscriber Loop System: Every subscriber in a telephone network is connected usually to the nearest switching office using a dedicated

Advantage or disadvantage of using INADDR_ANY, What is the advantage or dis...

What is the advantage or disadvantage of using INADDR_ANY instead of the IP address of the computer running on the server? The format of TCP/IP, structure sockaddr_in defines u

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd