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Print number of keys in Redis
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DBSIZE returns the number of keys and it's easier to parse.
Downside: if a key has expired it may still count.
http://redis.io/commands/dbsize
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When creating HTML emails, should we use html, head, body tags?
In my email views, I usually just do something like...
6 Answers
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ICollection Vs List in Entity Framework
...igning a few Entity Framework applications. I really didn't read that much documentation and I feel like I am suffering for it now.
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Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?
...by UIKit that convert the various CG structs into NSStrings. The reason it doesn't work is because %@ signifies an object. A CGPoint is a C struct (and so are CGRects and CGSizes).
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How to connect to my http://localhost web server from Android Emulator
What can I do in the Android emulator to connect it to my localhost web server page at http://localhost or http://127.0.0.1 ?
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Error: could not find function … in R
...ntains the function? install.packages("thePackage") (this only needs to be done once)
Did you attach that package to the workspace ?
require(thePackage) or library(thePackage) (this should be done every time you start a new R session)
Are you using an older R version where this function didn't exis...
Securely storing environment variables in GAE with app.yaml
...I push app.yaml to GitHub, this information becomes public (not good). I don't want to store the info in a datastore as it does not suit the project. Rather, I'd like to swap out the values from a file that is listed in .gitignore on each deployment of the app.
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How to insert an item into an array at a specific index (JavaScript)?
... I thought I would feel stupid for asking but now that I know the answer I don't! Why on earth did they decide to call it splice when a more searchable term was in common use for the same function?!
– tags2k
Feb 25 '09 at 14:46
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How to wait for a number of threads to complete?
...ly is the advantage of using a thread group? Just because the API is there doesn't mean you have to use it...
– Martin v. Löwis
Aug 9 '09 at 20:35
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Why cast an unused function parameter value to void?
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@Benoit what does casting to void actually do? Is its only function to show the compiler that you're intentionally ignoring something or does (void) actually do something and when the compiler sees it, it'll just count it as having done s...