Mysql has a nice “if exists” addition to the drop table statement. If the table to be dropped does not exists, it doesn’t raise an exception but only creates a warning.
In Oracle RDMBS you can emulate this behavior like so:
BEGIN EXECUTE immediate 'drop table INSERT_TABLE_NAME_HERE'; EXCEPTION WHEN others THEN IF SQLCODE != -942 THEN RAISE; END IF; END; /
Ugly, but it works very well.
Java has the nice Iterable interface (since Java 5, i guess) that allows object oriented loops like
List<String> strings = new ArrayList<String>(); for(String string : strings) System.out.println(string);
but guess what, a simple array is not iterable…
In case you need one, feel free to use this one:
package ac.simons; import java.util.Iterator; public class IterableArray<T> implements Iterable<T> { private class ArrayIteratorImpl implements Iterator<T> { private int position = 0; @Override public boolean hasNext() { return data != null && this.position < data.length; } @Override public T next() { return data[position++]; } @Override public void remove() { throw new UnsupportedOperationException(); } } private final T[] data; public IterableArray(T[] data) { this.data = data; } @Override public Iterator<T> iterator() { return new ArrayIteratorImpl(); } }
Some would say, i have 3 problems 
private final static Pattern placeholder = Pattern.compile("#\\{(\\w+?)\\}");
won’t match “Mot#{ö}rhead” for example.
To replace the word character \w you either need the list of possible unicodeblocks like [\p{InLatin}|\p{InEtc}] (you get the codes for the blocks through “Character.UnicodeBlock.forName” or you’re lazy like me and just use the dot:
private final static Pattern placeholder = Pattern.compile("#\\{(.+?)\\}");
Oh what a day… :/
The default behavior for quite a long time was :hard_breaks in the textilize helper method in rails.
Hard Breaks means: All line breaks are turned into <br />’s.
Somebody changed the textilize helper in “actionpack-2.3.4/lib/action_view/helpers/text_helper.rb” in 2.3.4 and added the ability to pass some options but broke the default behavior here:
def textilize(text, *options) options ||= [:hard_breaks] # ...
Options will never be null.
I fixed this by monkey patching the module through the following code in config/initializers/textilizepatch.rb
module ActionView module Helpers module TextHelper def textilize(text, *options) options = [:hard_breaks] if options == nil || options.size == 0 if text.blank? "" else textilized = RedCloth.new(text, options) textilized.to_html end end end end end
Such changes should be tested… *grml*
You can use
RAILS_DEFAULT_LOGGER.log "foobar" # or Rails.logger.log "blah"
outside a controller for logging.