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Quickly reading very large tables as dataframes
...ns the difference between the two functions (readr currently claims to be "1.5-2x slower" than data.table::fread).
read.csv.raw from iotools provides a third option for quickly reading CSV files.
Trying to store as much data as you can in databases rather than flat files. (As well as being a bett...
Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
...ou'll need high bandwidth to use the service effectively. It's usable over 1.5 Mbps DSL but kind of slow in response. You'd want to use it from a corporate network with Gbps bandwidth for optimal use. Or at least a higher speed cable/DSL broadband connection. On my last test ~3Mbps seemed sufficient...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...bles or sorted results.
I have helped MySQL users who unknowingly created 1.5GB temp tables frequently and filled up their disk space. They had lots of VARCHAR(255) columns that in practice stored very short strings.
It's best to define the column based on the type of data that you intend to stor...
Jelly Bean DatePickerDialog — is there a way to cancel?
...ava checks for a null whenever it reads mCallback (since the days of API 3/1.5 it seems --- can't check Honeycomb of course), it won't trigger the exception. Considering Lollipop fixed the issue, I'm not going to look into it: just use the default implementation (covered in the class I provided).
A...
Storing Image Data for offline web application (client-side storage database)
...e (8.247s), Total Elapsed Time: (13.714s)
FireFox: Fetch (0.422s), Store (31.519s), Total Elapsed Time: (32.836s)
IE 10: Fetch (0.668s), Store: (0.896s), Total Elapsed Time: (3.758s)
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What is the maximum amount of RAM an app can use?
...tion, please guide me because mobile comes with 3GB RAM and tab comes with 1.5GB RAM, so tablet occupy large ram because of large screen ?
– Rahul Mandaliya
Jul 17 '17 at 6:38
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How many socket connections can a web server handle?
... (responses not connections)
The second one Fasthttp for golang advertises 1.5M concurrent connections - see https://github.com/valyala/fasthttp
The leading languages are Rust, Go, C++, Java, C, and even C# ranks at 11 (6.9M per second). Scala and Clojure rank further down. Python ranks at 29th at 2...
How to make an Android Spinner with initial text “Select One”?
...e prompt string for position less than 0.
This has been tested on Android 1.5 through 4.2, but buyer beware! Because this solution relies on reflection to call the private AdapterView.setNextSelectedPositionInt() and AdapterView.setSelectedPositionInt(), it's not guaranteed to work in future OS upd...
“To Do” list before publishing Android app to market [closed]
...a good time). Why so? Well, no companies would like to publish an app only 1.5 day before the week end -> too dangerous (in case there is a problem that needs a quick reaction time).
Use proguard on your app (usually, you just have to add this line: proguard.config=proguard.cfg in the default.pro...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
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Andreas Mueller
21.5k66 gold badges4949 silver badges6363 bronze badges
answered Apr 3 '11 at 17:17
ogriselogrisel
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