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How do you match only valid roman numerals with a regular expression?
... numeral letter). Should work in PCRE, Perl, Python and Ruby.
Online Ruby demo: http://rubular.com/r/KLPR1zq3Hj
Online Conversion: http://www.onlineconversion.com/roman_numerals_advanced.htm
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How to implement __iter__(self) for a container object (Python)
...
Another option is to inherit from the appropriate abstract base class from the `collections module as documented here.
In case the container is its own iterator, you can inherit from
collections.Iterator. You only need to implement the next method then.
An example is:
>>>...
Archive the artifacts in Jenkins
...wo more options will appear related to keeping build artifacts for the job based on number of days or builds.
The settings that work for me are to enter 1 for "Max # of builds to keep with artifacts" and then to have a post-build action to archive the artifacts. This way, all artifacts from all bui...
rvm installation not working: “RVM is not a function”
... changes. I'm "anti-" the login thing too because it is per session/login based. Personally I want the ability to compare same program with different Ruby-s and versions.
– will
Oct 7 '15 at 11:50
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Is there a typical state machine implementation pattern?
...e in to another state.
Finally, don't start the design of a state machine based on "functional" boundaries, use sub-functions for that. Instead divide the states based on when you will have to wait for something to happen before you can continue. This will help minimize the number of times you ha...
How do I include a file over 2 directories back?
...directory/file');
DOCUMENT_ROOT is a server variable that represents the base directory that your code is located within.
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When do I need to use a semicolon vs a slash in Oracle SQL?
...cute last SQL or PL/SQL command that I just executed".
See
http://ss64.com/ora/syntax-sqlplus.html
Rule of thumb would be to use slash with things that do BEGIN .. END or where you can use CREATE OR REPLACE.
For inserts that need to be unique use
INSERT INTO my_table ()
SELECT <values...
Finding what methods a Python object has
...for a class object: its attributes, and recursively the attributes of its bases.
for any other object: its attributes, its class's attributes, and
recursively the attributes of its class's base classes.
For example:
$ python
Python 2.7.6 (default, Jun 22 2015, 17:58:13)
[GCC 4.8.2] on linu...
Datatype for storing ip address in SQL Server
...ip, 4, 1) AS INTEGER) AS VARCHAR(3) );
RETURN @str
END;
go
Here's a demo of how to use them:
SELECT dbo.fnBinaryIPv4('192.65.68.201')
--should return 0xC04144C9
go
SELECT dbo.fnDisplayIPv4( 0xC04144C9 )
-- should return '192.65.68.201'
go
Finally, when doing lookups and compares, always u...
Transitions on the CSS display property
...as a workaround.
Example Code (you can apply it to your menu accordingly) Demo:
Add the following CSS to your stylesheet:
@-webkit-keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
Then apply the fadeIn...