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How come a non-const reference cannot bind to a temporary object?
Why is it not allowed to get non-const reference to a temporary object,
which function getx() returns? Clearly, this is prohibited by C++ Standard
but I am interested in the purpose of such restriction, not a reference to the standard.
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How to check if running as root in a bash script
I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
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How to listen for a WebView finishing loading a URL?
I have a WebView that is loading a page from the Internet. I want to show a ProgressBar until the loading is complete.
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How do I wait for an asynchronously dispatched block to finish?
I am testing some code that does asynchronous processing using Grand Central Dispatch. The testing code looks like this:
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In vim, how do I get a file to open at the same line number I closed it at last time?
I want to configure vim to open a file at the same place I left off at.
7 Answers
7
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Printing without newline (print 'a',) prints a space, how to remove?
I have this code:
12 Answers
12
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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
It's a sad fact of life on Scala that if you instantiate a List[Int], you can verify that your instance is a List, and you can verify that any individual element of it is an Int, but not that it is a List[Int], as can be easily verified:
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Encoding an image file with base64
I want to encode an image into a string using the base64 module. I've ran into a problem though. How do I specify the image I want to be encoded? I tried using the directory to the image, but that simply leads to the directory being encoded. I want the actual image file to be encoded.
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Makefile variable as prerequisite
In a Makefile, a deploy recipe needs a environment variable ENV to be set to properly execute itself, whereas others don't care, e.g.:
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How to find server name of SQL Server Management Studio
I installed Microsoft SQL Server 2008.
15 Answers
15
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