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Unnamed/anonymous namespaces vs. static functions
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lukeluke
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List vs List
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truthealitytrutheality
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Gradle store on local file system
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rodionrodion
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Check that an email address is valid on iOS [duplicate]
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How to print register values in GDB?
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edited Mar 30 '14 at 19:59
Millie Smith
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How do I protect Python code? [closed]
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answered Nov 4 '08 at 12:00
Ned BatchelderNed Batchelder
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Can't install via pip because of egg_info error
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143
Found out what was wrong. I never installed the setuptools for python, so it was missing some v...
python max function using 'key' and lambda expression
... Applying max to a list of tuples.
>>> lis = [(1,'a'), (3,'c'), (4,'e'), (-1,'z')]
By default max will compare the items by the first index. If the first index is the same then it'll compare the second index. As in my example, all items have a unique first index, so you'd get this as the...
Can't connect Nexus 4 to adb: unauthorized
I have a Nexus 4 with Android 4.3 and I am trying to connect the device to a computer with Windows 7 64bit.
26 Answers
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find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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