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Should functions return null or an empty object?

...ned as "no data". That's like stating that a SQL database should return an error if a where clause produces no results. While an Exception is a valid design choice (though one that would irritate me as a consumer), it's not any "more correct" than returning null. And no, I'm not the DV. ...
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Downloading a large file using curl

...ing is ok with: if (!$result) throw new Exception('Download error...'); share | improve this answer | follow | ...
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How often does python flush to a file?

..._init__.py file before any other code, messages printed with print and any errors will no longer be logged to Ableton's Log.txt but to separate files on your disk: import sys path = "/Users/#username#" errorLog = open(path + "/stderr.txt", "w", 1) errorLog.write("---Starting Error Log---\n") sys....
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What are the differences between the different saving methods in Hibernate?

... there are many errors here... e.g. 1) ´save()´ doesn't return an "attached object", it returns the ´id´; 2) ´persist()´ isn't guaranteed to set the ´id´, neither it "persists object to DB"; ... – Eugen Labun ...
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Servlet for serving static content

... } catch (IllegalArgumentException e) { response.sendError(HttpServletResponse.SC_BAD_REQUEST); return; } if (resource == null) { response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } String fileNam...
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Integrate ZXing in Android Studio

... When trying run my app using ContinuousCapture in Fragment: Error:Execution failed for task ':app:transformClassesWithDexForDebug'. > com.android.build.transform.api.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Proc...
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How to pretty-print a numpy.array without scientific notation and with given precision?

...) and len(arg) == 0): tf[ 2*j + 1 ] = "%s" # %f -> %s, not error continue args[j], isarray = _tonumpyarray(arg) if isarray and fmt[-1] in "defgEFG": tf[ 2*j + 1 ] = "%s" fmtfunc = (lambda x: fmt % x) formatter = dict( f...
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How to send data to local clipboard from a remote SSH session

... use old unicode -version version information -silent errors only, run in background (default) -quiet run in foreground, show what's happening -verbose running commentary Report bugs to <astrand@lysator.liu.se> $ xsel -help Usage: xsel [options] M...
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What's the difference between hard and soft floating point numbers?

...patible. hard - the ABI uses float or VFP registers. The linker (loader) error is because you have a shared library that will pass floating point values in integer registers. You can still compile your code with a -mfpu=vfp, etc but you should use -mfloat-abi=softfp so that if the libc needs a fl...
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Compression/Decompression string with C#

...fter that I am doing compression and decompression.There is no compilation error in my code except when I decompression my code and return my string, its returning only half of the XML. ...