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Why dict.get(key) instead of dict[key]?
...r i in range(100):
s = d[i]
Now timing these two functions using timeit
>>> import timeit
>>> print(timeit.timeit("getway({i:i for i in range(100)})","from __main__ import getway"))
20.2124660015
>>> print(timeit.timeit("lookup({i:i for i in range(100)})","from ...
map vs. hash_map in C++
... but also iterate over all the keys in the map. I saved a large amount of time in lookup, but gained it back via the iterations, so I switched back to map and am looking for other ways to improve application performance.
– Erik Garrison
Sep 6 '10 at 21:36
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Error inflating when extending a class
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Sometimes the simplest things can be a problem :) good to know that both parameters are used for inflating.
– Warpzit
Feb 20 '12 at 12:19
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How can I include a YAML file inside another?
...**” pattern in large directory trees may consume an inordinate amount of time because of recursive search.
In order to enable recursive argument, we shall write the !include tag in Mapping or Sequence mode:
Arguments in Sequence mode:
!include [tests/data/include.d/**/*.yaml, true]
Arg...
Persist javascript variables across pages? [duplicate]
...re than that, check out @Annie's great tips in the other answer. For small time data storage, I would say Cookies are the easiest thing.
Note that cookies are stored client side.
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Table overflowing outside of div
...attributes like table-row, table-cell. Tabular layouts are not floated. At time the display:table property alone is not sufficient
– questzen
Jul 18 '12 at 6:11
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When should you use constexpr capability in C++11?
...f you call max with constant values it is explicitly calculated at compile time and not at runtime.
Another good example would be a DegreesToRadians function. Everyone finds degrees easier to read than radians. While you may know that 180 degrees is 3.14159265 (Pi) in radians it is much clearer wr...
JPA - Returning an auto generated id after persist()
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The ID is only guaranteed to be generated at flush time. Persisting an entity only makes it "attached" to the persistence context. So, either flush the entity manager explicitely:
em.persist(abc);
em.flush();
return abc.getId();
or return the entity itself rather than its ...
Setup RSpec to test a gem (not Rails)
...u'd have to do to make sure you're using the same version of rspec all the time. That 0.56 seconds it took to run two tests was 99% taken up by the time it took my computer to load up rspec. Running hundreds of specs should be extremely fast. The only issue you could run into that I'm aware of is...
Transform DateTime into simple Date in Ruby on Rails
I have a datetime column in db that I want to transform into a simple date when I show it to users.
6 Answers
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