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CGI Perl Interview Questions
Questions Answers Views Company eMail

how to connect cisco switch uisng perl script

ABC,

2930

Assuming both a local($var) and a my($var) exist, what's the difference between ${var} and ${"var"}?

180

If EXPR is an arbitrary expression, what is the difference between $Foo::{EXPR} and *{"Foo::".EXPR}?

186

Perl uses single or double quotes to surround a zero or more characters. Are the single(' ') or double quotes (" ") identical?

192

What does `$result = f() .. g()' really return?

195

What does `new $cur->{LINK}' do? (Assume the current package has no new() function of its own.)

187

What happens to objects lost in "unreachable" memory, such as the object returned by Ob->new() in `{ my $ap; $ap = [ Ob->new(), $ap ]; }' ?

168

What's the difference between /^Foo/s and /^Foo/?

181

When would `local $_' in a function ruin your day?

176

Why aren't Perl's patterns regular expressions?

210

Why is it hard to call this function: sub y { "because" } ?

196

How do I replace every character in a file with a comma?

193

Which of these is a difference between Perl and C++ ?

179

How do I sort a hash by the hash value?

193

How do I sort a hash by the hash key?

188


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Un-Answered Questions { CGI Perl }

Can we load binary extension dynamically?

202


How will you open a file in a write-only mode in perl?

155


Explain what is the scalar data and scalar variables in Perl?

220


What are prefix dereferencer?

142


Comment on data types and variables in perl.

159






Explain ivalue?

147


What does this symbol mean '->'?

152


How to remove a directory in perl?

161


What value is returned by a lone `return;’ statement?

181


How to create a directory in perl?

156


What are the advantages of c over Perl?

182


How do I print the entire contents of an array with Perl?

182


How to determine strings length in perl?

152


Explain ivalue in perl?

175


What is the difference between die and exit in perl?

195