Oct 14, 2013

Conditional where in rails

T.L.D.RYou can pass blank object to where clause and it will return current relation as it is.Long versionSometimes, we need to apply where clause conditionally. For eg. apply timeframe

Apr 20, 2013

jenkins on fedora with rails

Installing jenkins on Fedora is quite easy.$ sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo $ sudo rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.

Mar 10, 2013

SICP Exercise 1-11

Problem -A function f is defined by the rule thatf(n) = n if n < 3 andf(n) = f(n-1) + 2 * f(n-2) + 3 * f(n-3) if n >= 3.Write a procedure

Feb 7, 2013

SICP Exercise 1-3

Define a procedure that takes three numbers as arguments and returns the sum of squares of the two larger numbersI broke this problem into 3 stepsDefine a square function which will take one