except

I am now trying for some hours to remove a nested hash key of a hash list. I saw many solution non-nested hashs wich looks like this: sample_hash = {"key1" => "value1", "key2" => "value2"} sample_hash.except("key1") This results in: {"key2"=>"value2"} But if I try to use the except method on a hash with nested key then it doesn't work. Here my code: nested_hash = {"key1"=>"value1", "key2"=>{ "nested_key1"=>"nestedvalue1", "nested_key2"=>"nestedvalue2" } } nested_hash.except("nested_key2") The except() method returns the nested_hash without any changes. I have looked for a solution how I can

I'm using Delphi Pro 6 on Windows XP with FastMM 4.92 and the JEDI JVCL 3.0. Given the code below, I'm having the following problem: only the first exception handling block gets a valid instance of E. The other blocks match properly with the class of the Exception being raised, but E is unassigned (nil). For example, given the current order of the exception handling blocks when I raise an E1 the block for E1 matches and E is a valid object instance. However, if I try to raise an E2, that block does match, but E is unassigned (nil). If I move the E2 catching block to the top of the ordering and

Possible Duplicate: LINQ find differences in two lists I want to find a difference between 2 series. So I am using Except in the LINQ statement. But Except seems to work only when the first collection is longer than the second. For example this will not return any result, even though the 2 collections are different. double[] numbers1 = { 2.0, 2.1, 2.2, 2.3, 2.4, 2.5 }; double[] numbers2 = { 2.2 }; IEnumerable<double> onlyInFirstSet = numbers2.Except(numbers1); Can anyone confirm if this is the case? If so, do I have to check the collection lengths before I write the query, because I do not

I have two simple tables: (here only the "id" column) table1: id 1 2 3 4 table2: id 2 4 the sql query should compare the two tables for missing "id" in table2 and return: 1,2 any ideas? :) TY There are several ways to skin this cat: SELECT table1.ID FROM table1 WHERE table1.ID NOT IN(SELECT table2.ID FROM table2) Or you could use a left outer join: SELECT table1.ID FROM table1 LEFT OUTER JOIN table2 ON table1.ID = table2.ID WHERE table2.ID IS NULL select t1.* from table1 t1 left outer join table2 t2 on t1.id = t2.id where t2.id is null Try this: SELECT table1.id FROM table1 WHERE table1.id NOT

If I run the code: connection = manager.connect("I2Cx") The program crashes and reports a KeyError because I2Cx doesn't exist (it should be I2C). But if I do: try: connection = manager.connect("I2Cx") except Exception, e: print e It doesn't print anything for e. I would like to be able to print the exception that was thrown. If I try the same thing with a divide by zero operation it is caught and reported properly in both cases. What am I missing here? Aya If it's raising a KeyError with no message, then it won't print anything. If you do... try: connection = manager.connect("I2Cx") except