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Why are dates calculated from January 1st, 1970?
...ed java.util.Date class and the Joda-Time library.
MicrosecondsUsed by databases such as Postgres.
NanosecondsUsed by the new java.time package in Java 8.
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Check if application is on its first run [duplicate]
...droid development and and I want to setup some of application's attributes based on Application first run after installation. Is there any way to find that the application is running for the first time and then to setup its first run attributes?
...
Android encryption / decryption using AES [closed]
...ithHmacSHA1 derivation is used as it is more secured.
import android.util.Base64;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.cry...
LINQ to Entities case sensitive comparison
...vider (e.g. SqlClient), which convert the command tree into the native database command text. Query get executed on the data store and the results are Materialized into Entity Objects by Object Services. No logic has been put in between to take case sensitivity into account. So no matter what case y...
Content Security Policy “data” not working for base64 Images in Chrome 28
...m trying to set a CSP header with the meta http-equiv header. I included a base64 image and I'm trying to make Chrome load the image.
...
How is “=default” different from “{}” for default constructor and destructor?
...me noexcept specification depending upon the noexcept specification of the bases and members.
The only difference I'm detecting so far is that if Widget contains a base or member with an inaccessible or deleted destructor:
struct A
{
private:
~A();
};
class Widget {
A a_;
public:
#if 1
...
How do I integrate Ajax with Django applications?
..."
Mixin to add AJAX support to a form.
Must be used with an object-based FormView (e.g. CreateView)
"""
def render_to_json_response(self, context, **response_kwargs):
data = json.dumps(context)
response_kwargs['content_type'] = 'application/json'
return HttpRe...
What causes java.lang.IncompatibleClassChangeError?
...rror and AbstractMethodError.
The better paper about BC is "Evolving Java-based APIs 2: Achieving API Binary Compatibility" written by Jim des Rivières.
There are also some automatic tools to detect such changes:
japi-compliance-checker
clirr
japitools
sigtest
japi-checker
Usage of japi-compl...
When is layoutSubviews called?
...
Based on my experiment, the second rule may be not accurate: when I add view1.2 into view1, layoutSubviews of view1.2 and view1 are called, but layoutSubviews of view1.1 is not called. (view1.1 and view1.2 are subviews of vi...
Can someone explain Microsoft Unity?
...the container to resolve those dependencies for you. So with a constructor-based injection scheme, you just pass the interface to the IMyService dependency into the constructor. When you create the MyClass with your container, your container will resolve the IMyService dependency for you.
Using St...