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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...e I was unable to find a relevant implementation I decided to accept the challenge.
I made some modifications to the squares demo present in OpenCV and the resulting C++ code below is able to detect a sheet of paper in the image:
void find_squares(Mat& image, vector<vector<Point> >...
Python non-greedy regexes
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You seek the all-powerful *?
From the docs, Greedy versus Non-Greedy
the non-greedy qualifiers *?, +?, ??, or {m,n}? [...] match as little
text as possible.
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Code-first vs Model/Database-first [closed]
...will lose part of the control on both your entities and database but for small easy projects you will be very productive.
If you want additional features in POCO entities you must either T4 modify template or use partial classes.
Manual changes to database will be most probably lost because your mod...
MongoDB: How to update multiple documents with a single command?
...: 'field1', field2: 'field2'})
New in version 3.2
Params::
{}: select all records updated
Keyword argument multi not taken
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Best Practice: Initialize JUnit class fields in setUp() or at declaration?
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If you're wondering specifically about the examples in the JUnit FAQ, such as the basic test template, I think the best practice being shown off there is that the class under test should be instantiated in your setUp method (or in a test method).
When ...
Interface or an Abstract Class: which one to use?
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I was trying all day to understand the usages of abstract and interface classes, your post made it all clear. Thanks a lot Alan
– afarazit
May 21 '11 at 12:51
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How to handle floats and decimal separators with html5 input type number
... has a default value of 1. If you want the input's validation algorithm to allow floating-point values, specify a step accordingly.
For example, I wanted dollar amounts, so I specified a step like this:
<input type="number" name="price"
pattern="[0-9]+([\.,][0-9]+)?" step="0.01"
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All permutations of a Windows license key
... it gave the answers in a very clean way for copy and paste. There was actually a 5th variable, and I got my key!! I actually gave the "write it down" task to a colleague, and he gave up! Thanks a lot.
– Kerridge0
Jan 31 '13 at 15:50
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Multiple submit buttons on HTML form – designate one button as default [duplicate]
... managed to push the next button to the right by (1) floating it right (2) all other buttons floated left (3) all buttons displayed block (4) all buttons, including next button, specified in source order.
– Salman A
Dec 26 '09 at 14:56
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How do I get the full url of the page I am on in C#
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I usually use Request.Url.ToString() to get the full url (including querystring), no concatenation required.
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