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How to crop an image in OpenCV using Python
How can I crop images, like I've done before in PIL, using OpenCV.
8 Answers
8
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ASP.NET MVC Conditional validation
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There's a much better way to add conditional validation rules in MVC3; have your model inherit IValidatableObject and implement the Validate method:
public class Person : IValidatableObject
{
public string Name { get; set; }
public bool IsSenior { get; set; }
public Senior ...
round() for float in C++
I need a simple floating point rounding function, thus:
22 Answers
22
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When and why I should use session_regenerate_id()?
Why and when should I use the session_regenerate_id() function in php?
Should I always use it after I use the session_start() ?
I've read that I have to use it to prevent session fixation, is this the only reason?
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How can I use goto in Javascript?
I have some code that I absolutely must implement using goto . For example, I want to write a program like this:
16 Answer...
What Are the Differences Between PSR-0 and PSR-4?
...I've read about namespaces and how they are beneficial. I'm currently creating a project in Laravel and trying to move from class map autoloading to namespacing. However, I can't seem to grasp what the actual difference is between PSR-0 and PSR-4.
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What is the difference between a framework and a library?
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Actually these terms can mean a lot of different things depending the context they are used.
For example, on Mac OS X frameworks are just libraries, packed into a bundle. Within the bundle you will find an actual dynamic library (libWhatever.dylib). The difference between a...
How do I show/hide a UIBarButtonItem?
I created a toolbar in IB with several buttons. I would like to be able to hide/show one of the buttons depending on the state of the data in the main window.
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Explicit vs implicit SQL joins
Is there any efficiency difference in an explicit vs implicit inner join?
For example:
12 Answers
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Delete duplicate records in SQL Server?
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You can do this with window functions. It will order the dupes by empId, and delete all but the first one.
delete x from (
select *, rn=row_number() over (partition by EmployeeName order by empId)
from Employee
) x
where rn > 1;
Run it ...