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How to len(generator()) [duplicate]
Python generators are very useful. They have advantages over functions that return lists. However, you could len(list_returning_function()) . Is there a way to len(generator_function()) ?
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How do I move a redis database from one server to another?
... currently have a live redis server running on a cloud instance and I want to migrate this redis server to a new cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redis...
std::string formatting like sprintf
I have to format std::string with sprintf and send it into file stream. How can I do this?
40 Answers
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Entity Attribute Value Database vs. strict Relational Model Ecommerce
It is safe to say that the EAV/CR database model is bad. That said,
10 Answers
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How to optimize for-comprehensions and loops in Scala?
So Scala is supposed to be as fast as Java. I'm revisiting some Project Euler problems in Scala that I originally tackled in Java. Specifically Problem 5: "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?"
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What's the difference between HEAD, working tree and index, in Git?
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A few other good references on those topics:
My Git Workflow
I use the index as a checkpoint.
When I'm about to make a change that might go awry — when I want to explore some direction that I'm not sure if I can follow through on or even whether it's a g...
How to add a button to a PreferenceScreen?
I'm quite new to Android Development and just came across Preferences.
I found PreferenceScreen and wanted to create a login functionality with it. The only problem I have is that I don't know how I could add a "Login" button to the PreferenceScreen .
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Android - How To Override the “Back” button so it doesn't Finish() my Activity?
...stener or return true when you have KEY_BACK.
You just need the following to catch the back key (Make sure not to call super in onBackPressed()).
Also, if you plan on having a service run in the background, make sure to look at startForeground() and make sure to have an ongoing notification or els...
Use of 'const' for function parameters
...go the whole hog and use it everywhere? For example, imagine a simple mutator that takes a single boolean parameter:
31 An...
How can I access the MySQL command line with XAMPP for Windows?
...nd type:
cd c:\xampp\mysql\bin
mysql.exe -u root --password
If you want to use mysqldump.exe, you should also find it there.
Log into your mysql server, and start typing your commands.
Hope it helps...
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