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Check OS version in Swift?
...ratingSystemVersion
If you just want to check if the users is running at least a specific version, you can also use the following Swift 2 feature which works on iOS and OS X:
if #available(iOS 9.0, *) {
// use the feature only available in iOS 9
// for ex. UIStackView
} else {
// or u...
Calculating Pearson correlation and significance in Python
...uncorrelated system
producing datasets that have a Pearson correlation at least as extreme
as the one computed from these datasets. The p-values are not entirely
reliable but are probably reasonable for datasets larger than 500 or so.
Parameters
----------
x : 1D array
y : 1D array the same ...
Xamarin 2.0 vs Appcelerator Titanium vs PhoneGap [duplicate]
...ugh you might not have much experience with these languages, there will at least be a plethora of examples to work from.
Xamarin
Xamarin.iOS and Xamarin.Android (also known as MonoTouch and MonoDroid), are designed to allow you to have one library of business logic, and use this within your applic...
Self-references in object literals / initializers
...lly a thing anymore. Looks like deleting isn't as bad as it used to be, at least not in V8 (Chrome, etc.) or SpiderMonkey. Still slower, but only a tiny bit, and these things are freaky fast these days.
– T.J. Crowder
May 7 at 16:02
...
diff current working copy of a file with another branch's committed copy
...sa. I don't understand it either. With git 1.7.9.5 / Ubuntu 12.04 I can at least do git diff -R master:foo foo to get the diff I actually want. When I try that with msysgit 1.9.4 / Windows 7 x64 I get fatal: unable to read 0000000000000000000000000000000000000000. Without -R I get the same error mes...
Initial size for the ArrayList
...ze() < 10) arr.add(0); It can be useful to say, the size needs to be at least 10. e.g. so you can use arr.set(9, n);
– Peter Lawrey
Jan 17 '12 at 16:33
10
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Using Node.JS, how do I read a JSON file into (server) memory?
...
At least in Node v8.9.1, you can just do
var json_data = require('/path/to/local/file.json');
and access all the elements of the JSON object.
share
...
final keyword in method parameters [duplicate]
...nymous inner class must be final, but still it offers a good reason for at least some method parameters to be final.
– Erick G. Hagstrom
Jun 11 '15 at 21:03
1
...
How to loop over directories in Linux?
...y"; done
note: using the list */ .*/ works in zsh only if there exist at least one hidden directory in the folder. In bash it will show also . and ..
Another possibility for bash to include hidden directories would be to use:
shopt -s dotglob;
for file in */ ; do echo "$file is a directory";...
How to create an HTTPS server in Node.js?
...e but if you are using macOS make sure that the generated key length is at least 2048: openssl genrsa -out key.pem 2048
– sakisk
Oct 17 '16 at 7:21
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