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Android : Check whether the phone is dual SIM
...he phone is a DUAL SIM or not.
Try following activity :
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanc...
Is there a REAL performance difference between INT and VARCHAR primary keys?
...te key. Only you can assess if the benefit of this is significant in your application.
That is, you can measure the queries in your application that are the most important to be speedy, because they work with large volumes of data or they are executed very frequently. If these queries benefit f...
Master-master vs master-slave database architecture?
...
There's a fundamental tension:
One copy: consistency is easy, but if it happens to be down everybody is out of the water, and if people are remote then may pay horrid communication costs. Bring portable devices, which may need to operate disconnected, into the picture and one copy won't cut it.
M...
How can I change my Cygwin home folder after installation?
... those and configure Cygwin using the new Windows Security model to POSIX mappings.
[[ -f /etc/passwd ]] && mv /etc/passwd /etc/passwd.bak
[[ -f /etc/group ]] && mv /etc/group /etc/group.bak
The /etc/nsswitch.conf file's db_home: setting defines how Cygwin fetches the user's home ...
Why declare unicode by string in python?
...from __future__ import unicode_literals to make it the default.
This only applies to Python 2; in Python 3 the default is Unicode, and you need to specify a b in front (like b'These are bytes', to declare a sequence of bytes).
...
Ignore Xcode warnings when using Cocoapods
...undefined method `inhibit_all_warnings!' for #<Pod::Specification for MyApp(1.0)>
– KrauseFx
Nov 3 '12 at 21:27
...
How to implement the activity stream in a social network
...se for storage of unique activities (1 record per activity / "thing that happened") Make the records as compact as you can. Structure so that you can quickly grab a batch of activities by activity ID or by using a set of friend IDs with time constraints.
Publish the activity IDs to Redis whenever a...
return statement vs exit() in main()
... executable you're building (i.e., who's calling main). Are you coding an app that uses the C-runtime? A Maya plugin? A Windows service? A driver? Each case will require research to see if exit is equivalent to return. IMHO using exit when you really mean return just makes the code more confus...
Making code internal but available for unit testing from other projects
... testing projects. It's probably not a good choice for use in your actual application assemblies, for the reason stated above.
Example:
[assembly: InternalsVisibleTo("NameAssemblyYouWantToPermitAccess")]
namespace NameOfYourNameSpace
{
...
Reference: What is variable scope, which variables are accessible from where and what are “undefined
...e accessible". Just because you wrote $foo = 'bar'; once somewhere in your application doesn't mean you can refer to $foo from everywhere else inside the application. The variable $foo has a certain scope within which it is valid and only code in the same scope has access to the variable.
How is a ...