What are case classes in scala?

1

Explain how are indexes update?

623

I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

1453

Explain how to read data or a matrix from a file?

84

What companies use linux?

457

Why is the .net framework 3.0 a major version number of the .net framework if it uses the .net framework 2.0 runtime and compiler?

565

Which os is better windows or linux?

478

What does @singleton annotation do?

522

What is the group of aquatic beings composed of large number of photosynthetic beings?

95

What is == and === in php?

509

what is jasper?

455

What are the subsets of sql?

552

What is spring beanpropertyrowmapper?

191

I want to create a directory such that anyone in the group can create a file and access any person's file in it but none should be able to delete a file other than the one created by himself.

599

what is session state?

1526