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Perl grep Function
Description
This function extract any elements from LIST for which EXPR is TRUE.
Syntax
Following is the simple syntax for this function −
grep EXPR, LIST
Return Value
This function returns the number of times the expression returned true in scalar context and list of elements that matched the expression in list context.
Example
Following is the example code showing its basic usage −
#!/usr/bin/perl @list = (1,"Test", 0, "foo", 20 ); @has_digit = grep ( /\d/, @list ); print "@has_digit\n";
When above code is executed, it produces the following result −
1 0 20
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