How can I check whether a file exists? I want to warn the user if a requested input file is missing.

1087

How many tabs in a tabbed dialog do you consider appropriate?

2094

Explain the working of voltage commutated chopper with aid of circuit diagram and necessary waveforms. Derive an expression for its output voltage?

1049

ANY ONE HAVING THE IDEA ABOUT CONFIGURATION SETTINGS FOR VARIANT CONFIGURATION WITH BOM.TEL ME THE STEP BY STEP CONFIGURATION.I KNOW VARIANT CONFIGURATION WITH OUT BOM CONFIGURATION

2043

Is there any way to kill a thread in python?

859

What is the difference between proxied and proxyless calls?

905

What is the role of editor in wordpress?

167

What do you think about the latest algorithm update from google?

781

What is semmsl (max-sem-nsems in solaris 10+)?

787

Difference between undefined and undeclared variables?

898

Which are the Steel tests ?

1191

Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?

1826

Describe a TCP connection sequence ?

14644

Is it possible to set specific colors for table borders?

765

How would you design a secure system for online payment at Amazon?

1039