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What is the main difference between Inheritance and Polymorphism?
...a different way in between parent class and its sub classes, and call them based on situation are Polymorphism,. Am I correct?
– Muhammad Raihan Muhaimin
Jun 20 '13 at 16:55
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Does Git publicly expose my e-mail address?
...b can remember even PR commits on a deleted branch that were merged sing rebase (and so, do not expose the email/name anywhere in the repo except on the PR web page). If the PR was merged, I don't know any way to reverse the commits (if it is still open you can rebase and force push).
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“webxml attribute is required” error in Maven
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This solution works for me(I was using 2.2 before). Also, I am using Java Based Configuration for Servlet 3.0 and no need to have web.xml file.
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How to get record created today by rails activerecord?
...ance issues when the table size grows.
Typically, if you perform lookups based on created_at column, add an index on the table in your migration file.
add_index :posts, :created_at
Now, to lookup records created today:
Rails 3/4
Post.where("created_at >= ?", Time.zone.now.beginning_of_day)...
no acceptable C compiler found in $PATH when installing python
...t in your $PATH variable.
To install gcc use this: (run as root)
Redhat base:
yum groupinstall "Development Tools"
Debian base:
apt-get install build-essential
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Is SonarQube Replacement for Checkstyle, PMD, FindBugs?
...cts. The main added value, however, is that it stores the history in a database. You can then see the trend. Are you improving the code base or are you doing the opposite? Only a tool with memory can tell you that.
You should run Sonar in your CI system so that even things that take some time to ex...
Is the Javascript date object always one day off?
...ar
new Date(2011, 0); // Normal behavior as months in this case are zero based.
=> // Sat Jan 01 2011 00:00:00 GMT-0700 (MST)
Get the last month and day of a year
new Date((2011 + 1), 0, 0); // The second zero roles back one day into the previous month's last day.
=> // Sat Dec 31 201...
WAMP/XAMPP is responding very slow over localhost
...check this by pressing CTRL+ALT+DEL and press Task Manager
Turn off the Base Filtering Engine (BFE)
What I find to be working a bit as well was turning off the Base Filtering Engine. Since stopping or disabling the BFE service will significantly reduce the security of the system you should only ...
Understanding the Gemfile.lock file
... a source other than the main Rubygems index (e.g., git dependencies, path-based, dependencies) have a ! which means they are "pinned" to that source2 (although one must sometimes look in the Gemfile to determine in).
RUBY VERSION (optional)
The Ruby version specified in the Gemfile, when this Gem...
How to define a preprocessor symbol in Xcode
...tring=\@\"www.foobar.org\"
And in the source code:
objectManager.client.baseURL = APPURL_NSString;
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