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What is the purpose of the var keyword and when should I use it (or omit it)?
...on of undesired global properties. Some of the newer browsers have already started rolling support for strict mode. See, for example, my compat table.
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Singletons vs. Application Context in Android?
...ng, but there is no lifecycle of Application. It is created when your app starts (before any of its components are instantiated) and its onCreate() called at that point, and... that is all. It sits there and lives forever, until the process is killed. Just like a singleton. :)
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Loading Backbone and Underscore using RequireJS
... {
App.Router = new MainRouter();
Backbone.history.start();
}
});
return AppView;
});
I hope I was useful.!
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Checking network connection
....
A quick Nmap of the host 8.8.8.8 gave below result:
$ sudo nmap 8.8.8.8
Starting Nmap 6.40 ( http://nmap.org ) at 2015-10-14 10:17 IST
Nmap scan report for google-public-dns-a.google.com (8.8.8.8)
Host is up (0.0048s latency).
Not shown: 999 filtered ports
PORT STATE SERVICE
53/tcp open domain...
Checking out Git tag leads to “detached HEAD state”
I'm developing a deployment script for my git project and I just started using tags. I've added a new tag called v2.0 :
2 ...
What database does Google use?
...f machines
it is easy to add more machines to the system and automatically start taking advantage of those resources without any reconfiguration
each table has multiple dimensions (one of which is a field for time, allowing versioning)
tables are optimized for GFS (Google File System) by being split...
Is Meyers' implementation of the Singleton pattern thread safe?
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IANA(C++ language)L but section 3.6.3 [basic.start.term] p2 suggests that it is possible to hit undefined behavior by trying to access the object after it has been destroyed?
– stewbasic
Jul 10 '17 at 0:58
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Is an index needed for a primary key in SQLite?
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It's mention in the sqlite_master table with a name starting with sqlite_autoindex_.
– dan04
Jul 31 '10 at 19:17
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NSDefaultRunLoopMode vs NSRunLoopCommonModes
...run a thread (with the exception of the main thread) there is an option to start the thread in a run loop or not. If the thread runs some sort or long-running operation without interaction with external events and without timers, you do not need a run loop, but if your thread needs to respond to inc...
Mercurial: how to amend the last commit?
...n your repository:
hg qimport -r0:tip
hg qpop -a
Of course you need not start with revision zero or pop all patches, for the last just one pop (hg qpop) suffices (see below).
remove the last entry in the .hg/patches/series file, or the patches you do not like. Reordering is possible too.
hg qpush...