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How to run a background task in a servlet based web application?
...o do it. My servlet has a method which gives counts of the user from a database on a daily basis as well as the total count of the users from the whole database. So I want to keep the servlet continuously running for that.
...
When should I use a trailing slash in my URL?
...URL containing a hierarchical structure against which the relative link is based, and that the ftp, http,
and file URL schemes are examples of some that can be considered hierarchical, with the components of the hierarchy being separated by "/".
Source: Wikipedia Uniform Resource Locator (URL)
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ASP.NET MVC HandleError
...y default)
[HandleError(ExceptionType = typeof(SqlException), View = "DatabaseError")]
[HandleError(ExceptionType = typeof(NullReferenceException), View = "LameErrorHandling")]
You can also stack up additional attributes with specific information about the type of exception you are looking for. A...
What is the difference between Strategy design pattern and State design pattern?
...lgorithms in a
strategy pattern. The callers to the object does not change based on
which strategy is being employed, but regardless of strategy the goal
is the same (sort the collection).
The State pattern is about doing different things based on the
state, while leaving the caller relieved from th...
Change one value based on another value in pandas
...t is created for the mapping. Otherwise some checking/cleaning can be done based on something like: df.ID.isin(names.keys())
– Rutger Kassies
Oct 7 '13 at 14:12
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How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
... - Topics or exchanges) , in such cases if you want to filter out messages based on topics (which are actually strings) , you definitely do not want create hash table for the million subscriptions with million topics . A better approach is store the topics in trie , so when filtering is done based o...
Rebasing and what does one mean by rebasing pushed commits
It is often said that, you should not rebase commits that you have already pushed. What could be meaning of that?
4 Answer...
JUnit: how to avoid “no runnable methods” in test utils classes
...it until after contributing another upvote that i can't remove. Make your base class abstract, then JUnit will ignore it. See @gmoore's answer below.
– Ryan Shillington
Mar 21 '17 at 21:57
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How to call methods dynamically based on their name? [duplicate]
How can I call a method dynamically when its name is contained in a string variable? For example:
5 Answers
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How do you version your database schema? [closed]
...
See
Is there a version control system for database structure changes?
How do I version my MS SQL database in SVN?
and Jeff's article
Get Your Database Under Version Control
I feel your pain, and I wish there were a better answer. This might be closer to what you wer...