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Check if an apt-get package is installed and then install it if it's not on Linux
...kage owns the command, try:
dpkg -S `which <command>`
For further details, see article Find out if package is installed in Linux and dpkg cheat sheet.
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Android: How can I pass parameters to AsyncTask's onPreExecute()?
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why, how and which parameters are passed to Asynctask<>, see detail here. I think it is the best explanation.
Google's Android Documentation Says that :
An asynchronous task is defined by 3 generic types, called Params, Progress and Result, and 4 steps, called onPreExecute, doInBackg...
What are POD types in C++?
...virtual members functions. Wikipedia's article on POD goes into a bit more detail and defines it as:
A Plain Old Data Structure in C++ is an aggregate class that contains only PODS as members, has no user-defined destructor, no user-defined copy assignment operator, and no nonstatic members of p...
What are the big improvements between guava and apache equivalent libraries?
...y answer to talk more about Guava's very active development, and to better detail the Java 1.5 features.
– Etienne Neveu
Dec 29 '10 at 20:39
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@ variables in Ruby on Rails
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A tutorial about What is Variable Scope? presents some details quite well, just enclose the related here.
+------------------+----------------------+
| Name Begins With | Variable Scope |
+------------------+----------------------+
| $ | A global variable ...
How can I properly handle 404 in ASP.NET MVC?
...eneral");
break;
}
}
// Pass exception details to the target error View.
routeData.Values.Add("error", exception);
// Clear the error on server.
Server.ClearError();
// Avoid IIS7 getting in the middle
Response.TrySkipIisCustomErrors = true;
// Cal...
adb not finding my device / phone (MacOS X)
...summary: Add the Vendor ID to ~/.android/adb_usb.ini and restart adb
Full Details:
Most of the time nothing will need to be done to get the Mac to recognize the phone/device. Seriously, 99% of the time "it just works."
That being said, the quickest way to reset adb is to restart it with the follow...
The identity used to sign the executable is no longer valid
...me. What fixed it for me was going to Accounts in Xcode (in preferences), Details for my developer account then clicking the refresh icon at lower left. That loaded a new team provisioning profile, which apparently was needed... yeah. We shouldn't have to deal with this Apple. Microsoft used to d...
How can I see the size of files and directories in linux? [closed]
...see the apparent space of the directory and true space of the files and in details the names of the files displayed, besides the size and creation date of each.
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What online brokers offer APIs? [closed]
...w.
IIRC, you can create a demo account for free. I don't remember all the details, but it let you connect to their test server and pull quotes and make fake trades and such to get your software fine tuned.
Don't know much about cost for an actual account or anything.
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