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Why use sprintf function in PHP?
...f has all the formatting capabilities ... actually is missing an important one, %,8d for instance to get the rightly aligned 8 digit and commas separated integer. Using number_format is less convenient in a printf style.
– e2-e4
Nov 16 '10 at 6:41
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Get all related Django model objects
...ng to figure this out so I could implement a kind of "Observer Pattern" on
one of my models. Hope it's helpful.
Django 1.8+
Use _meta.get_fields(): https://docs.djangoproject.com/en/1.10/ref/models/meta/#django.db.models.options.Options.get_fields (see reverse in the _get_fields() source also)
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Call a Server-side Method on a Resource in a RESTful Way
...an be not object-oriented, just using HTTP does not make a design RESTful. One may be caught up in the rush of thinking about their services in terms of actions and remote methods that should be called. No wonder this will mostly end up in a RPC-Style service (or a REST-RPC-hybrid). The first step i...
How to write the Fibonacci Sequence?
...Go on on the sites I linked to you and will see this (on wolfram):
This one is pretty easy to implement and very, very fast to compute, in Python:
from math import sqrt
def F(n):
return ((1+sqrt(5))**n-(1-sqrt(5))**n)/(2**n*sqrt(5))
An other way to do it is following the definition (from w...
What are the differences between Mustache.js and Handlebars.js?
... "A little too logic-less". I'd argue that alternating rows CSS should be done with a CSS pseudo class such as tr:nth-child(even) and tr:nth-child(odd) or tr:nth-child(2n). Although that's just an example, I feel that (most of the time) if something is hard or awkward with Mustache, then you're doin...
Removing an activity from the history stack
... It is difficult to copy the needed flag as it is a link, so here one that can easily be copied. android:noHistory="true"
– MirroredFate
Sep 28 '15 at 21:47
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How to select following sibling/xml tag using xpath
...of all tr elements -- not shown in your question.
Each tr element has only one td with class attribute valued 'name' and only one td with class attribute valued 'desc'.
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Generator Expressions vs. List Comprehension
...list comprehension.
Since performance is the most common reason to choose one over the other, my advice is to not worry about it and just pick one; if you find that your program is running too slowly, then and only then should you go back and worry about tuning your code.
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It is more efficient to use if-return-return or if-else-return?
...of the current function, the two forms are equivalent (although the second one is arguably more readable than the first).
The efficiency of both forms is comparable, the underlying machine code has to perform a jump if the if condition is false anyway.
Note that Python supports a syntax that allow...
MongoDB Many-to-Many Association
...or instance, if the document structures require acquiring a lock, updating one document, then another, and possibly more documents, then releasing the lock, likely the model has failed. Just because we can build distributed locks doesn't mean that we are supposed to use them.
For the case of the U...