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What's the function like sum() but for multiplication? product()?
...gested, it is not hard to make your own using reduce() and operator.mul():
from functools import reduce # Required in Python 3
import operator
def prod(iterable):
return reduce(operator.mul, iterable, 1)
>>> prod(range(1, 5))
24
Note, in Python 3, the reduce() function was moved to t...
How to cast int to enum in C++?
...at value. Otherwise the produced enum value will be whatever value results from converting the expression to the enum's underlying type. If VC++ does something different then I think it's non-conformant.
– bames53
Jul 12 '12 at 17:09
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Does Flask support regular expressions in its URL routing?
...sk just in case anyone wants a working example of how this could be done.
from flask import Flask
from werkzeug.routing import BaseConverter
app = Flask(__name__)
class RegexConverter(BaseConverter):
def __init__(self, url_map, *items):
super(RegexConverter, self).__init__(url_map)
...
Submit HTML form on self page
...s not allow action="" (empty attribute). It is against the specification.
From this other Stack Overflow answer.
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Rendering JSON in controller
... not (by default) be able to make XMLHttpRequest (XHR - aka ajax) requests from services to api. The way people have been sneaking around that limitation (before the Cross-Origin Resource Sharing spec was finalized) is by sending the JSON data over from the server as if it was JavaScript instead of...
What's the purpose of git-mv?
From what I understand, Git doesn't really need to track file rename/move/copy operations, so what's the real purpose
of git mv ? The man page isn't specially descriptive...
...
Best way to create custom config options for my Rails app?
...s
production:
<<: *defaults
This configuration file gets loaded from a custom initializer in config/initializers:
# Rails 2
APP_CONFIG = YAML.load_file("#{RAILS_ROOT}/config/config.yml")[RAILS_ENV]
# Rails 3+
APP_CONFIG = YAML.load_file(Rails.root.join('config/config.yml'))[Rails.env]
...
What is the difference between “text” and new String(“text”)?
...inct instance of a String object; String s = "text"; may reuse an instance from the string constant pool if one is available.
You very rarely would ever want to use the new String(anotherString) constructor. From the API:
String(String original) : Initializes a newly created String object so th...
Do I need to close() both FileReader and BufferedReader?
...der.close() closes the underlying reader. Its description is simply copied from Reader.close(). This may be the actual behavior in practice, but it's not documented.
– John Kugelman
Mar 30 '15 at 22:12
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offsetting an html anchor to adjust for fixed header [duplicate]
... (I hope that makes sense). I need a way to offset the anchor by the 25px from the height of the header. I would prefer HTML or CSS, but Javascript would be acceptable as well.
...