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How to use concerns in Rails 4
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So I found it out by myself. It is actually a pretty simple but powerful concept. It has to do with code reuse as in the example below. Basically, the idea is to extract common and / or context specific chunks of code in order to clean up the ...
How to move one word left in the vi editor
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I'm not sure to understand what you mean by "a reference". If you want to try these motions you can just open a file in vim and try the motions, right?
– statox
Jan 10 '16 at 8:36
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How to Animate Addition or Removal of Android ListView Rows
...e not creating an unneeded Handler. Second, it makes the code less complex by already using a built-in callback for when the animation finishes. Third, you don't know how the implementation of Handler and Animation will work on each platform; it may be possible that your delayed runnable happens bef...
HTML5 Local storage vs. Session storage
...ifferent expiration time, sessionStorage will only be accessible while and by the window that created it is open. localStorage lasts until you delete it or the user deletes it.
Lets say that you wanted to save a login username and password you would want to use sessionStorageover localStorage for se...
Fastest way to list all primes below N
...meit -s"import primes" "primes.{method}(1000000)"
with {method} replaced by each of the method names.
primes.py:
#!/usr/bin/env python
import psyco; psyco.full()
from math import sqrt, ceil
import numpy as np
def rwh_primes(n):
# https://stackoverflow.com/questions/2068372/fastest-way-to-li...
Calculate the number of business days between two dates?
... --businessDays;
}
return businessDays;
}
Edit by Slauma, August 2011
Great answer! There is little bug though. I take the freedom to edit this answer since the answerer is absent since 2009.
The code above assumes that DayOfWeek.Sunday has the value 7 which is not the ...
How do I escape reserved words used as column names? MySQL/Create Table
...rvers you should use ANSI SQL queries. String escaping in ANSI SQL is done by using double quotes ("). Unfortunately, this escaping method is not portable to MySQL, unless it is set in ANSI compatibility mode.
Personally, I always start my MySQL server with the --sql-mode='ANSI' argument since this...
How to keep a git branch in sync with master
...en.com/development/visualized-git-practices-for-team/…. That was written by the Git maintainer, so it's probably fair to say he knows what he's talking about with regard to this particular topic.
– Dan Moulding
Mar 12 '14 at 23:44
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git merge: apply changes to code that moved to a different file
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I had a similar issue, and I resolved it by rebasing my work to match the target file organization.
Say that you modified original.txt on your branch (the local branch), but on the master branch, original.txt has been copied to another one, say copy.txt.
This copy h...
What is a monad?
...ctions may not always return a valid value. In Haskell this is represented by the Maybe-type, which is an option which is either Some value or Nothing.
Chaining operations which always return a valid value is of course straightforward:
streetName = getStreetName (getAddress (getUser 17))
But what ...