section. 7.9 Regular Expressions Sometimes you are not looking for an exact string, but a particular pattern. For example, suppose you are trying to extract a single date from a large text file. You don’t RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of explained in this excerpt from the perlre manpage:CHAPTER 7. STRINGS 62 i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale

section. 7.9 Regular Expressions Sometimes you are not looking for an exact string, but a particular pattern. For example, suppose you are trying to extract a single date from a large text file. You don’t RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of explained in this excerpt from the perlre manpage:CHAPTER 7. STRINGS 62 i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale

RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale not permitted to modify the value of an immutable type. – For bits types this means that the bit pattern of a value once set will never change and that value is the identity of a bits type. – For composite

63 8.9 Regular Expressions Sometimes you are not looking for an exact string, but a particular pattern. For example, suppose you are trying to extract a single date from a large text file. You don’t RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale

63 8.9 Regular Expressions Sometimes you are not looking for an exact string, but a particular pattern. For example, suppose you are trying to extract a single date from a large text file. You don’t RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale

63 8.9 Regular Expressions Sometimes you are not looking for an exact string, but a particular pattern. For example, suppose you are trying to extract a single date from a large text file. You don’t RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale

RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale not permitted to modify the value of an immutable type. – For bits types this means that the bit pattern of a value once set will never change and that value is the identity of a bits type. – For composite

section. 7.9 Regular Expressions Sometimes you are not looking for an exact string, but a particular pattern. For example, suppose you are trying to extract a single date from a large text file. You don’t RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of explained in this excerpt from the perlre manpage: CHAPTER 7. STRINGS 61 i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale

RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale not permitted to modify the value of an immutable type. – For bits types this means that the bit pattern of a value once set will never change and that value is the identity of a bits type. – For composite

RegexMatch object. These objects record how the expression matches, including the substring that the pattern matches and any captured substrings, if there are any. This example only captures the portion of as they do in Perl, as explained in this excerpt from the perlre manpage: i Do case-insensitive pattern matching. If locale matching rules are in effect, the case map is taken from the current locale not permitted to modify the value of an immutable type. – For bits types this means that the bit pattern of a value once set will never change and that value is the identity of a bits type. – For composite