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Track the time a command takes in UNIX/LINUX?

In UNIX/LINUX, is there an easy way to track the time a command takes? 3 Answers 3 ...
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How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]

If there's some cross-platform C/C++ code that should be compiled on Mac OS X, iOS, Linux, Windows, how can I detect them reliably during preprocessor process? ...
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Updating the list view when the adapter data changes

When the data associated with array adapter is changed, invalidating the listview is sufficient to show the updated values? Following piece of code is not working, did i misunderstood something here.? ...
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Selecting multiple classes with jQuery

I’ve had a good look and can’t seem to find out how to select all elements matching certain classes in one jQuery selector statement such as this: ...
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Adding a user to a group in django

How would I add a user to a group in django by the group's name? 2 Answers 2 ...
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How to toggle a boolean?

Is there a really easy way to toggle a boolean value in javascript ? 6 Answers 6 ...
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?

My numpy arrays use np.nan to designate missing values. As I iterate over the data set, I need to detect such missing values and handle them in special ways. ...
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Overriding class constants vs properties

I would like to better understand why, in the scenario below, there is a difference in the way class constants are inherited vs. instance variables. ...
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How to get String Array from arrays.xml file

I am just trying to display a list from an array that I have in my arrays.xml . When I try to run it in the emulator, I get a force close message. ...
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Python timedelta in years

I need to check if some number of years have been since some date. Currently I've got timedelta from datetime module and I don't know how to convert it to years. ...