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When to use nested classes and classes nested in modules?
...ave that behaviour.
In Ruby,
class Car
class Wheel
end
end
differs from
class Car
end
class Wheel
end
only in the name of the class Wheel vs. Car::Wheel. This difference in name can make explicit to programmers that the Car::Wheel class can only represent a car wheel, as opposed to a gen...
typeof for RegExp
...stanceof RegExp will report false when testing a regular expression object from another window, which won't be a problem if this kind of check is not required, but is something to be aware of.
– Tim Down
Dec 3 '10 at 10:49
...
How do I create a slug in Django?
...
You will need to use the slugify function.
>>> from django.template.defaultfilters import slugify
>>> slugify("b b b b")
u'b-b-b-b'
>>>
You can call slugify automatically by overriding the save method:
class Test(models.Model):
q = models.CharField(...
Is it expensive to use try-catch blocks even if an exception is never thrown?
... stack and seeing if any try blocks exist that would catch this exception. From a layman's perspective, try may as well be free. It's actually throwing the exception that costs you - but unless you're throwing hundreds or thousands of exceptions, you still won't notice the cost.
try has some mino...
In Flux architecture, how do you manage Store lifecycle?
... and decoupled as possible -- a self-contained universe that one can query from a Controller-View. The only road into the Store is through the callback it registers with the Dispatcher. The only road out is through getter functions. Stores also publish an event when their state has changed, so Co...
How to make Eclipse behave well in the Windows 7 taskbar?
...4. Pin to the taskbar. 5. Close Eclipse. 6. Removed compatibility settings from eclipse.exe. 7. Run Eclipse. Still not working! 8. Unpin from taskbar and pin again. (???) 9. And NOW it works...
– MarioVilas
Jul 14 '12 at 16:37
...
What are the differences between ArrayList and Vector?
... element. Structural modification means addition or deletion of element(s) from the list. Setting the value of an existing element is not a structural modification.
Collections.synchronizedList is normally used at the time of creation of the list to avoid any accidental unsynchronized access to the...
Integrated Markdown WYSIWYG text editor
...nto the <div>. The copying runs through Showdown which produces HTML from Markdown.
Another Javascript routine reacts every time the <div> contents change. It copies the contents back into the (now hidden) <textarea>. The content is run through to-markdown to convert from HTML to M...
How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
...der the problem of many<->one/many casemappings first and separately from handling different Normalization forms.
For example:
x heiße y
^--- cursor
Matches heisse but then moves cursor 1 too much. And:
x heisse y
^--- cursor
Matches heiße but then moves cursor 1 too less.
This w...
How do you calculate the average of a set of circular data? [closed]
...erage of a set of circular data. For example, I might have several samples from the reading of a compass. The problem of course is how to deal with the wraparound. The same algorithm might be useful for a clockface.
...