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Use email address as primary key?
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@Vincent Malgrat: thanks for confirming that you have indeed misunderstood the concept of normalization. "you should not have the same information repeated on multiple rows" -- did you really mean to say "information"?! A compound key will usually involv...
How can I access my localhost from my Android device?
...twork), then use your desktop IP address assigned by the router (not localhost and not 127.0.0.1).
To find out the IP address of your desktop:
type into the command line ipconfig (Windows) or ifconfig (Unix)
on Linux the one-liner ifconfig | grep "inet " | grep -v 127.0.0.1 will yield only t...
Is there hard evidence of the ROI of unit testing?
... high domain expertise, yet they also have a 20% lower test coverage. This confirms my own experience, I find assurance much more important in systems I haven't worked with yet, while testing is a hindrance for everything else.
– LearnCocos2D
Oct 14 '13 at 17:4...
Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
...no unicode on Python 3. Unrelated: json files should not use BOM (though a confirming json parser may ignore BOM, see errate 3983).
– jfs
May 11 '15 at 7:55
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How do I expire a PHP session after 30 minutes?
...bability divided by session.gc_divisor. And using the default values for those options (1 and 100 respectively), the chance is only at 1%.
Well, you could simply adjust these values so that the garbage collector is started more often. But when the garbage collector is started, it will check the val...
Curious null-coalescing operator custom implicit conversion behaviour
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Now that I have the End User Preview of Roslyn, I can confirm that it's fixed there. (It's still present in the native C# 5 compiler though.)
– Jon Skeet
Apr 11 '14 at 9:59
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Android: AsyncTask vs Service
Why do I read in the answer to most questions here a lot about AsyncTask and Loaders but nothing about Services ? Are Services just not known very well or are they deprecated or have some bad attributes or something? What are the differences?
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Getting the IP address of the current machine using Java
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Works on Windows; can we confirm if OSX is still a problem?
– trilogy
Oct 2 '18 at 14:31
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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
...ytes 7f 45 4c 46 (which also happens to be human readable for .ELF). Let's confirm that by reading the 4 first bytes of /bin/ls, which is an ELF executable:
head -c 4 "$(which ls)" | hd
output:
00000000 7f 45 4c 46 |.ELF|
00000004 ...
How to extract the decision rules from scikit-learn decision-tree?
...w the classes are ordered? I would guess alphanumeric, but I haven't found confirmation anywhere.
– IanS
Sep 4 '15 at 8:27
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