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UNIX for Dummies Questions & Answers
Extracting the last 3 chars from a string using sed
Post 43996 by 435 Gavea on Wednesday 26th of November 2003 02:44:36 PM
11-26-2003
Hehe, obviosly \. was intended to be a real dot character...
I was kinda desperate , so I tried this out...
But, let me see If I got it:
You're substituting any characteres till the last 3 ones - (...) means exactly what ? to look for the pattern till (excluding) the last 3 characters ?
And what means the \1 ?
Why didn't you subtituted this characters with nothing ?
Thanks in advance,
435 Gavea
I was kinda desperate , so I tried this out...
But, let me see If I got it:
You're substituting any characteres till the last 3 ones - (...) means exactly what ? to look for the pattern till (excluding) the last 3 characters ?
And what means the \1 ?
Why didn't you subtituted this characters with nothing ?
Thanks in advance,
435 Gavea
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LEARN ABOUT DEBIAN
jifty::dbi::column
Jifty::DBI::Column(3pm) User Contributed Perl Documentation Jifty::DBI::Column(3pm) NAME
Jifty::DBI::Column - Encapsulates a single column in a Jifty::DBI::Record table DESCRIPTION
This class encapsulates a single column in a Jifty::DBI::Record table description. It replaces the _accessible method in Jifty::DBI::Record. It has the following accessors: "name type default validator boolean refers_to readable writable length". new is_numeric Returns true if the column is of some numeric type, otherwise returns false. is_string Returns true if this column is a text field is_boolean Returns true if this column is a boolean serialize_metadata Returns a hash describing this column object with enough detail to fully describe it in the database. Intentionally skips "record_class", all column attributes starting with "_", and all column attributes which are undefined. The "known" attributes in the "attributes" hash are flattened and returned as well. The list of known attributes are: container label hints render_as display_length valid_values available_values autocompleted documentation no_placeholder Setting this to a true value causes "load_by_cols" in Jifty::DBI::record to not use a placeholder when loading the column. This can allow the database to come up with better query plans in some cases. serialize_metadata2 Returns a hash describing this column object with enough detail to fully describe it in the database. Intentionally skips "record_class", all column attributes starting with "_", and all column attributes which are undefined. validator Gets/sets the validator coderef for the column. read DEPRECATED. Use "$column->readable" instead. write DEPRECATED. Use "$column->writable" instead. length DEPRECATED. Use "$column->max_length" instead. until DEPRECATED. Use "$column->till" instead. active Returns the a true value if the column method exists for the current application version. The current application version is determined by checking the "schema_version" in Jifty::DBI::Record of the column's "record_class". This method returns a false value if the column is not yet been added or has been dropped. This method returns a false value under these circumstances: o Both the "since" trait and "schema_version" method are defined and "schema_version" is less than the version set on "since". o Both the "till" trait and "schema_version" method are defined and "schema_version" is greater than or equal to the version set on "till". Otherwise, this method returns true. perl v5.14.2 2012-01-25 Jifty::DBI::Column(3pm)