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Can an Android NFC phone act as an NFC tag?
...ment might require the hardware vendor or some other person to verify your app / give it permissions to access the secure element. It's not as simple as creating a regular NFC android app.
More details here:
http://www.mail-archive.com/android-developers@googlegroups.com/msg152222.html
A real qu...
foldl versus foldr behavior with infinite lists
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This is mostly a great explanation, but I find the description of foldl as "backward" and foldr as "forward" problematic. This is in part because flip is being applied to (:) in the illustration of why fold is backward. The natural reaction is, "of course it's backward: you...
log messages appearing twice with Python Logging
I'm using Python logging, and for some reason, all of my messages are appearing twice.
8 Answers
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Rename package in Android Studio
...id Studio, you can do this:
For example, if you want to change com.example.app to my.awesome.game, then:
In your Project pane, click on the little gear icon ( )
Uncheck / De-select the Compact Empty Middle Packages option
Your package directory will now be broken up in individual directories
I...
How can I get the full/absolute URL (with domain) in Django?
...ed as: def reverse(viewname, urlconf=None, args=None, kwargs=None, current_app=None)
– matias elgart
Jan 31 '19 at 3:26
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Convert .pem to .crt and .key
...k] [-pubin] [-pubout] [-RSAPublicKey_in] [-RSAPublicKey_out] [-engine id]
DESCRIPTION
The rsa command processes RSA keys. They can be converted between various forms and their components printed out. Note this command uses the traditional SSLeay compatible format for private key encryption: new...
Common MySQL fields and their appropriate data types
... |
| description | TINYTEXT | often may not be enough, use TEXT
instead
| post body | TEXT | ...
How persistent is localStorage?
... cache.
Persistence
On disk until deleted by user (delete cache) or by the app
https://developers.google.com/web-toolkit/doc/latest/DevGuideHtml5Storage
As for a "replacement for the Cookie", not entirely
Cookies and local storage really serve difference purposes. Cookies are primarily for readin...
How to disable Crashlytics during development
...atement that checks a debug flag. You could use either a custom flag or an approach like the ones proposed here: How to check if APK is signed or "debug build"?
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How to determine a user's IP address in node
...xample, the request passed through proxy1, proxy2, and then proxy3. proxy3 appears as remote address of the request.
This is the solution suggested by Arnav Gupta with a fix Martin has suggested below in the comments for cases when x-forwarded-for is not set :
var ip = (req.headers['x-forwarded-f...