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Why are Where and Select outperforming just Select?
...);
int result2 = myCollection.Sum(mc => mc.IsValid ? mc.Value : 0);
Now here's the kicker:
LINQ uses deferred execution. Thus, while it may appear that result1 iterates over the collection twice, it actually only iterates over it once. The Where() condition is actually applied during the S...
How to create a video from images with FFmpeg?
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As far as I know –r parameter is variable frame rate this means that FFMPEG might drop or duplicate frames to achieve desired output frame rate. Using fps filter “-vf fps=value” force FFMPEG to produce constant frame rate. See Creat...
RESTfully design /login or /register resources?
...o think about how my api should be designed as a RESTful web service. For now, most of my URI's are generic and might apply to various web apps:
...
What does the CSS rule “clear: both” do?
... so this is how block level elements behave when floated left or right, so now why is clear: both; required and why?
So if you note in the layout demo - in case you forgot, here it is..
I am using a class called .clear and it holds a property called clear with a value of both. So lets see why it n...
How to use the 'og' (Open Graph) meta tag for Facebook share
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Do you know if the author tag should have the author name, or a link to a profile URL?
– tobek
Feb 4 '14 at 19:57
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How to convert a Base64 string into a Bitmap image to show it in a ImageView?
...ase64Encoded = encodedString.substring(encodedString.indexOf(",") + 1);
Now the pureBase64Encoded object is ready to be decoded:
final byte[] decodedBytes = Base64.decode(pureBase64Encoded, Base64.DEFAULT);
Now just simply use the line below to turn this into a Bitmap Object! :
Bitmap deco...
Redirect all to index.php using htaccess
...updated Feb '18 and Jan '19)
It's not actually necessary (nor even common now) to set the path as a $_GET variable, many frameworks will rely on $_SERVER['REQUEST_URI'] to retrieve the same information - normally to determine which Controller to use - but the principle is exactly the same.
This do...
What is the difference between .text, .value, and .value2?
...book.Sheets(1)
.Range(rngAddress).Offset(0, 1).ClearContents
beginTime = Now
For Each aCell In .Range(rngAddress).Cells
If useValue2 Then
aCell.Offset(0, 1).Value2 = aCell.Value2 + aCell.Offset(-1, 1).Value2
Else
aCell.Offset(0, 1).Value = aCell.Value + aCell.Offset(-1, 1)...
SQL, Postgres OIDs, What are they and why are they useful?
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if you don't know what OIDs are used for then you probably don't want to be using them.
– vdegenne
Jul 9 '16 at 21:26
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How to duplicate virtualenv
...ext editor, you'll see something like:
Django==1.3
Fabric==1.0.1
etc...
Now, edit the line that says Django==x.x to say Django==1.3 (or whatever version you want to install in your new virtualenv).
Lastly, activate your new virtualenv, and run:
pip install -r requirements.txt
And pip will aut...