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Difference between local and global indexes in DynamoDB
...f their fileFormat, then reads the data inside to determine what should be included in the query and what is omitted. This is basically how LSI works (just without the extra overhead of opening the file to read its contents).
GSI
For GSI, you're essentially creating another table for each GSI, bu...
What is the use of the ArraySegment class?
... the array segment. Casting to an IList requires subsequent method calls (including the indexer) to jump through the IList interface before reaching the implementation. There are a lot of discussions on the internet where people talk about the performance cost of using abstracted calls in tight lo...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
..., this solution is not very flexible; consider the case where your closure includes a method call on a non-Serializable class that you have no control over. You can neither add the Serializable tag to this class nor change the underlying implementation to change the method into a function.
Nilesh ...
How to resize an Image C#
...
in this question, you'll have some answers, including mine:
public Image resizeImage(int newWidth, int newHeight, string stPhotoPath)
{
Image imgPhoto = Image.FromFile(stPhotoPath);
int sourceWidth = imgPhoto.Width;
int sourceHeight = imgPhoto.Height...
What is the exact problem with multiple inheritance?
... can see people asking all the time whether multiple inheritance should be included into the next version of C# or Java. C++ folks, who are fortunate enough to have this ability, say that this is like giving someone a rope to eventually hang themselves.
...
How do you test functions and closures for equality?
...use pointer equality of functions (in
the swift type system sense, which includes several kinds of closures)
to fail or change depending on optimization. If "===" were defined on
functions, the compiler would not be allowed to merge identical method
bodies, share thunks, and perform certain...
Hidden features of C
...er with overloading it is that the built in applies to everything already, including void, so will never fail to compile for lack of available overload. Ie, gives programmer much rope.
– Aaron
Jul 6 '09 at 17:45
...
How do I access the request object or any other variable in a form's clean() method?
...nce using a middleware. Then you can access this from anywhere in you app, including the Form.clean() method.
Changing the signature of the Form.clean() method means you have you own, modified version of Django, which may not be what you want.
Thank middleware count look something like this:
impo...
Using AES encryption in C#
...hy.symmetricalgorithm.aspx
As of the time of this post, the current list includes:
AesManaged
RijndaelManaged
DESCryptoServiceProvider
RC2CryptoServiceProvider
TripleDESCryptoServiceProvider
To use RijndaelManaged with the code above, as an example, you would use:
string encrypted = Cryptog...
Removing projects in Sublime Text 2 and 3
...se be aware that this will clear out all projects in the recent list. This includes ones you have not deleted.
In the Sublime Text menu goto:
Project > Open Recent > Clear Items
Option 2: The manual way (but with control of which projects are removed):
Close Sublime Text
Loc...