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If case is irrelevant, then a case-insensitive regular expression is a good solution:

'aBcDe' =~ /bcd/i  # returns nil if no match

This will also work for multi-line strings.

See Ruby's Regexp class for more information.

If case is irrelevant, then a case-insensitive regular expression is a good solution:

/bcd/i =~ 'aBcDe'   # returns nil if no match

or

/bcd/i === 'aBcDe'  # returns false if no match

This will also work for multi-line strings.

See Ruby's Regexp class for more information.

If case is irrelevant, then a case-insensitive regular expression is a good solution:

'aBcDe' =~ /bcd/i  # evaluates as true

This will also work for multi-line strings.

See Ruby's Regexp class for more information.

If case is irrelevant, then a case-insensitive regular expression is a good solution:

'aBcDe' =~ /bcd/i  # returns nil if no match

This will also work for multi-line strings.

See Ruby's Regexp class for more information.

If case is irrelevant, then a case-insensitive regular expression is a good solution:

'aBcDe' =~ /bcd/i  # evaluates as true

This will also work for multi-line strings.

See Ruby's Regexp class.

If case is irrelevant, then a case-insensitive regular expression is a good solution:

'aBcDe' =~ /bcd/i  # evaluates as true

This will also work for multi-line strings.

See Ruby's Regexp class for more information.