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How to get last N records with activerecord?
... That was the other method I was thinking of, but that seems like even more work since that's 2 queries against the database instead of 1. I guess I assume that you need to iterate over the array at some point, so you could let ruby sort it at at that time. (ie. records.reverse.each do ..)
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Regex to match string containing two names in any order
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Would somebody mind explaining in a bit more detail how this example works?
– bjmc
Jul 7 '14 at 21:37
2
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How is Docker different from a virtual machine?
...ts own set of resources allocated to it, and does minimal sharing. You get more isolation, but it is much heavier (requires more resources). With Docker you get less isolation, but the containers are lightweight (require fewer resources). So you could easily run thousands of containers on a host, an...
Get exit code of a background process
...ing. (ps | grep isn't idiot-proof. If you have time you can come up with a more robust way to tell whether the process is still running).
Here's a skeleton script:
# simulate a long process that will have an identifiable exit code
(sleep 15 ; /bin/false) &
my_pid=$!
while ps | grep " $my_pid ...
Is there a way to iterate over a range of integers?
... I don't think most people would call this three-expression version more simple than what @Vishnu wrote. Only perhaps after years and years of C or Java indoctrination ;-)
– Thomas Ahle
Jun 28 '14 at 21:06
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Python ValueError: too many values to unpack [duplicate]
...terating over just the keys (which are strings).
Since self.materials has more than two keys*, they can't be unpacked into the tuple "k, m", hence the ValueError exception is raised.
In Python 2.x, to iterate over the keys and the values (the tuple "k, m"), we use self.materials.iteritems().
Howe...
What is the proper way to re-throw an exception in C#? [duplicate]
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Couldn't agree more. It's truly surprising how many developers with 5+ years experience who don't truly understand exception handling best practices. I can't explain how much I want to poke my eyes out when I see try/catches that either s...
What is normalized UTF-8 all about?
...ut. This is the faster normalization form to calculate, but the results in more code points (i.e. uses more space).
If you just want to compare two strings that are not already normalized, this is the preferred normalization form unless you know you need compatibility normalization.
NFC
NFC recombin...
Verify object attribute value with mockito
...tName());
Take a look at Mockito documentation
In case when there are more than one parameters, and capturing of only single param is desired, use other ArgumentMatchers to wrap the rest of the arguments:
verify(mock).doSomething(eq(someValue), eq(someOtherValue), argument.capture());
assertEq...
What is an example of the Liskov Substitution Principle?
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