Author: Craig Stuntz
If you have a list, array, or query in a C#/LINQ application and need to check and see if the list is empty, the correct way to do this is to use the Any() extension method:
if (q.Any())
{
Similarly, you can check to see if any elements in the list meet a certain condition:
if (q.Any(i => i.IsSpecial))
{
If the query provider is something like LINQ to Entities…
Author: Pawe Gowacki
In my previous post “Boian’s TBitmap Visualizer and converting to grayscale” I have described an algorithm for converting arbitrary TBitmap instances to gray using a selected formula. The problem is with the performance of the code that…
Author: Craig Stuntz
A couple of weeks ago, I wrote What Is Homomorphic Encryption, and Why Should I Care? In that post, I promised to share my C# implementation of the algorithm from Craig Gentry’s CACM article. Before I can do that, though, I need to explain some of…
Updated: 28 November, 2021
Author: Craig Stuntz
What Is Homomorphic Encryption?
“Homomorphic” is an adjective which describes a property of an encryption scheme. That property, in simple terms, is the ability to perform computations on the ciphertext without decrypting it first. Because this tends to sound either baffling or miraculous the first time you hear it, let’s begin…
Author: Allen
It seems that my previous post about FreeAndNil sparked a little controversy. Some of you jumped right on board and flat agreed with my assertion. Others took a very defensive approach. Still others, kept an “arms-length” view. Actually, the whole…
Author: Craig Stuntz
Version 3.5.2 of jqGrid included an important new feature:
Now when autoencode is set to true we encode the data coming from server and not only when we post it (secutity fix)
Prior to this, you were required to encode the data yourself.
Now personally…
Author: Craig Stuntz
As you’re probably aware, an Entity Framework model is stored in a single XML file, with the extension EDMX. Developers occasionally ask if this means that two people cannot work on the entity model concurrently. My answer to this is, “It depends.” But I can give you some tips to make it easier.
Obviously, if you use a source control tool which locks files on…
join in LINQ to SQL and LINQ to Entities Considered Messy, Redundant
January 13, 2010
Author: Alf Christophersen
In this post I will demonstrate that use of the join keyword in LINQ to SQL and LINQ to Entities is nearly always wrong. LINQ queries which you write with the join keyword are harder to read and write than queries you write using associations, and…
Author: Sinisa P29531
In my previous post I have translated Windows 7 SDK Direct2D “Advanced Geometries” examplefrom C++ to Delphi 2010 code. That was a lot of fun, so I have decided to continue the adventure in the realm of Direct2D programming and this…
Author: Adrian Z1428
converter_1946
I am very happy I was granted permission to talk about the new features present in Delphi 2010 concerning database area.
DataSnap 2010 (DS2010) extended the list of server method parameter types with the full suite of JSON types.
It is now possible to pass a TJSONObject instance for example from a client process to a server as input or output parameter and…
