What is conditional statement in Perl?
Perl conditional statements helps in the decision making, which require that the programmer specifies one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be true, and optionally, other statements to be executed if the …
What does F mean in Perl?
plain file
f: File is a plain file. – d: File is a directory. – l: File is a symbolic link. – p: File is a named pipe (FIFO), or Filehandle is a pipe. – S: File is a socket. –
How do I use unless in Perl?
statement unless(condition); Perl executes the statement from right to left, if the condition is false , Perl executes the statement that precedes the unless . If the condition is true , Perl skips the statement. If the condition evaluates to false , Perl executes the code block, otherwise, it skips the code block.
What does ++ mean in Perl?
Increment and Decrement Operators
The ++ and — operators are used with a variable to increment or decrement that variable by 1 (that is, to add or subtract 1).
Does Perl have else if?
Perl provides the if else statement that allows you to execute a code block if the expression evaluates to true , otherwise, the code block inside the else branch will execute. See the following example, the code block in the else branch will execute because $a and $b are not equal.
What does unless mean in Perl?
unless statement in perl behaves just opposite to the if statement in perl. It executes the set of statements inside its body when the given condition is false. unless(condition) { statement(s); } The statements inside unless body would execute when the condition is false.
Is Perl case sensitive?
PERL – Case Sensitivity File names, variables, and arrays are all case sensitive. If you capitalize a variable name when you define it, you must capitalize it to call it.