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Ruby on Rails patterns - decorator vs presenter
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It seems that now Draper identifies itself as presentation layer wrapper - so it's no longer a decorator, but a presenter actually. From their GH: "Draper adds an object-oriented layer of presentation logic to your Rails application."
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java.lang.RuntimeException: Unable to instantiate activity ComponentInfo
...er. It's pretty silly but thanks a lot. It had been Haunting me for a week now.
– meain
Jun 28 '15 at 11:30
was doing ...
Immutable class?
...mmutableList= new NotQuiteImmutableList(Arrays.asList("a", "b", "c"));
// now the list contains "a", "b", "c", "d" -- this list is mutable.
notQuiteImmutableList.getList().add("d");
One way to get around this problem is to return a copy of an array or collection when called from a getter:
public...
Why are the Level.FINE logging messages not showing?
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Thanks. That did the trick. I realize now why I was initially so confused. I had previously worked with logging levels, but my implementation at that time simply dropped every logged message into a list that was displayed with no regard to the Handler.
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What is the correct way to document a **kwargs parameter?
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The most meaningful continuation of that is now subprocess.Popen and I'm not sure that it's a particularly great example any more.
– Donal Fellows
Jan 11 '17 at 21:50
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How to make an immutable object in Python?
...ots__:
class A(object):
__slots__ = []
Instances of A are immutable now, since you can't set any attributes on them.
If you want the class instances to contain data, you can combine this with deriving from tuple:
from operator import itemgetter
class Point(tuple):
__slots__ = []
def...
How to deal with “data of class uneval” error from ggplot2?
... not! and yes you will! Glad I could steer you in the right direction and now its here for posterity.
– Justin
May 10 '13 at 16:39
add a comment
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Creating an empty bitmap and drawing though canvas in Android
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ARGB_4444 is deprecated now (developer.android.com/reference/android/graphics/…)
– Allen
Sep 21 '14 at 23:36
add a comment...
Create dynamic URLs in Flask with url_for()
...ex')
@app.route('/')
def index():
return 'you are in the index page'
Now if you have a link the index page:you can use this:
<a href={{ url_for('index') }}>Index</a>
You can do a lot o stuff with it, for example:
@app.route('/questions/<int:question_id>'): #int has bee...
How to write a Ruby switch statement (case…when) with regex and backreferences?
I know that I can write a Ruby case statement to check a match against a regular expressions.
However, I'd like to use the match data in my return statement. Something like this semi-pseudocode:
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