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Why are exclamation marks used in Ruby methods?

... @AbhilashAK save! raises an error if it cannot save. This is opposed to regular save returning true/false. – BookOfGreg Feb 16 '14 at 15:22 ...
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Moving average or running mean

... warning: although cumsum is faster there will be increased floating point error that may cause your results to be invalid/incorrect/unacceptable the comments pointed out this floating point error issue here but i am making it more obvious here in the answer.. # demonstrate loss of precision with ...
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How to change language settings in R

My error messages are displayed in French. How can I change my system language setting so the error messages will be displayed in English? ...
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Why use bzero over memset?

...t in 10 occurrences of the first printing. A C compiler cannot catch this error because both occurrences are the same... it was an error, and could be avoided using bzero, because swapping the two arguments to bzero will always be caught by the C compiler if function prototypes are used. However as...
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Calling Python in Java?

...t. A simple example from the top of my head - but should work I hope: (no error checking done for brevity) PythonInterpreter interpreter = new PythonInterpreter(); interpreter.exec("import sys\nsys.path.append('pathToModules if they are not there by default')\nimport yourModule"); // execute a fun...
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Error message “Forbidden You don't have permission to access / on this server” [closed]

...ex_names = apr_table_get(r->notes, "dir-index-names"); ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01276) "Cannot serve directory %s: No matching DirectoryIndex (%s) found, and " "server-generated directory index forbidden by " ...
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How to apply bindValue method in LIMIT clause?

... Thanks! But in PHP 5.3, the above code threw an error saying "Fatal error: Cannot pass parameter 2 by reference". It doesn't like casting an int there. Instead of (int) trim($_GET['skip']), try intval(trim($_GET['skip'])). – Will Martin ...
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Web-scraping JavaScript page with Python

... I got this error: RuntimeError: Cannot use HTMLSession within an existing event loop. Use AsyncHTMLSession instead. – HuckIt Apr 23 '19 at 15:59 ...
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Is there a way to automate the android sdk installation?

... : Help on a specific command. -v --verbose : Verbose mode, shows errors, warnings and all messages. --clear-cache: Clear the SDK Manager repository manifest cache. -s --silent : Silent mode, shows errors only. Action "list sdk": Lists remote SDK repository....
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sql query to return differences between two tables

...e the same exposed names. Use correlation names to distinguish them. I get error if table names are same and you pull them from two different databases. – Hammad Khan Jul 20 '11 at 19:10 ...