Which operator is used for repetition of string?

The * operator can be used to repeat the string for a given number of times. Writing two string literals together also concatenates them like + operator.

What is =~ in Perl?

9.3. The Binding Operator, =~ Matching against $_ is merely the default; the binding operator (=~) tells Perl to match the pattern on the right against the string on the left, instead of matching against $_. This code reads the line of input, tests that string against the pattern, then discards the line of input.

How do I print a character multiple times in Perl?

In Perl, you want to use the “x” operator. FWIW, it’s also print 4 x 4 in Perl. In general, in Perl, operators are monomorphic, ie. you have different sets of operators for string semantics, for numeric semantics, for bitwise semantics, etc., where it makes sense, and the type of the operands largely doesn’t matter.

What is the repetition operator in lists?

Lists can be created using the repetition operator, *. We are accustomed to using the * symbol to represent multiplication, but when the operand on the left side of the * is a list, it becomes the repetition operator. The repetition operator makes multiple copies of a list and joins them all together.

What is string repetition?

Given a string of length . A repetition is two occurrences of a string in a row. In other words a repetition can be described by a pair of indices such that the substring.

Which operator is also known as string repetition operator Mcq?

It is known as concatenation operator used to join the strings given either side of the operator. It is known as repetition operator.

What is $# in Perl?

EDIT: from perldoc perlvar : $# is also used as sigil, which, when prepended on the name of an array, gives the index of the last element in that array.

Why is * called repetition operator?

We are accustomed to using the * symbol to represent multiplication, but when the operand on the left side of the * is a tuple, it becomes the repetition operator. The repetition operator makes multiple copies of a tuple and joins them all together. Tuples can be created using the repetition operator, *.