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Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...how to map in web.xml?
@WebServlet works only on Servlet 3.0 or newer
In order to use @WebServlet, you only need to make sure that your web.xml file, if any (it's optional since Servlet 3.0), is declared conform Servlet 3.0+ version and thus not conform e.g. 2.5 version or lower. Below is a Servle...
Difference between Python's Generators and Iterators
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Higher-order functions passing around generators or generator functions may sound weird, but for me they have been coming up. I'm working in Apache Spark and it enforces a very functional programming style. The functions have to cre...
What's the $unwind operator in MongoDB?
...g and obtaining the data from your storage locations.
That being said, in order to understand the concept behind the $unwind parameter, you first must understand what the use case that you are trying to quote is saying. The example document from mongodb.org is as follows:
{
title : "this is my ti...
Some projects cannot be imported because they already exist in the workspace error in Eclipse
...stead of <name>Project2</name>.
So, I did following things in order to get the issue fixed:
Cut and paste Project2 outside the workspace
Change .project file to have <name>Project2</name>
Try importing Project2 again.
It worked for me.
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HTML5 Pre-resize images before uploading
...canvas.toDataURL("image/jpeg", 0.5) to make sure the quality is brought in order to decrease the file size. I came across this comment on the mozilla blog post and saw the bug resolution here bugzilla.mozilla.org/show_bug.cgi?id=564388
– sbose
Jan 15 '13 at 10:...
Why use jQuery on() instead of click()
...n that live() is now depreciated is because it was poorly implemented. In order to use live(), you had to be able to select at least one element in the DOM initially (I believe). It also caused a copy of the function to run to be bound to each element - and if you have 1000 elements, that's a lot ...
When to use std::forward to forward arguments?
...on from the title:
When to use std::forward to forward arguments?
In order to answer it, we should first introduce a notion of universal references. Scott Meyers gave this name and nowadays they are often called forwarding references. Basically, when you see something like this:
template<t...
How to automatically crop and center an image
...you need to know about the image is whether it is portrait or landscape in order to set the .portrait class so I had to use a bit of Javascript for this part.
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Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...ion must be automatically or manually enlisted in the transaction scope in order for your commands to participate in the transaction.
Q6. Yes, commands on a connection not participating in a transaction are committed as issued, even though the code happens to have executed in a transaction scope bl...
ASP.NET MVC 3 - Partial vs Display Template vs Editor Template
...en using EditorFor and DropDownListFor to render fields and drop downs. In order to get the ids and names unique we had to render the fields with a prefix depending on the parent partial view that was rendering it:
<div id="div-@(idPrefix)2" class="toHide-@(idPrefix)" style="display:none">...