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Using @property versus getters and setters
...could even have one version of a class that uses properties (say, for code-by-contract or debugging) and one that doesn't for production, without changing the code that uses it. At the same time, you don't have to write getters and setters for everything just in case you might need to better control...
Statistics: combinations in Python
...
A quick search on google code gives (it uses formula from @Mark Byers's answer):
def choose(n, k):
"""
A fast way to calculate binomial coefficients by Andrew Dalke (contrib).
"""
if 0 <= k <= n:
ntok = 1
ktok = 1
for t in xrange(1, min(k, n ...
python location on mac osx
...gt;>>
Items in /usr/bin should always be or link to files supplied by Apple in OS X, unless someone has been ill-advisedly changing things there. To see exactly where the /usr/local/bin/python is linked to:
$ ls -l /usr/local/bin/python
lrwxr-xr-x 1 root wheel 68 Jul 5 10:05 /usr/local...
How do you kill all current connections to a SQL Server 2005 database?
...have another set of DBA credentials before you attempt this. I fixed this by reverting to one of the previous snapshots. Lost some data. Luckily the data wasn't critical.
– RuntimeException
Dec 4 '14 at 15:12
...
How to return a value from __init__ in Python?
...t is required to return None, right? The newly created object is returned by new, init just sets some of its attributes. But yes, as you said, changing init, or new, to return something else really makes no sense.
– weronika
Sep 26 '11 at 17:25
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Determine which JAR file a class is from
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Yes. It works for all classes except classes loaded by bootstrap classloader. The other way to determine is:
Class klass = String.class;
URL location = klass.getResource('/' + klass.getName().replace('.', '/') + ".class");
As notnoop pointed out klass.getResource() method r...
TSQL - Cast string to integer or return default value
... INT) ELSE NULL END
-- returns NULL
ISNUMERIC() has a few issues pointed by Fedor Hajdu.
It returns true for strings like $ (is currency), , or . (both are separators), + and -.
share
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improve ...
jQuery - If element has class do this
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
How do I load my script into the node.js REPL?
...mand within the REPL, like such:
.load foo.js
It loads the file in line by line just as if you had typed it in the REPL. Unlike require this pollutes the REPL history with the commands you loaded. However, it has the advantage of being repeatable because it is not cached like require.
Which is...
How do you do a ‘Pause’ with PowerShell 2.0?
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/c Carries out the command specified by string and then terminates | out-null pipes the output to out-null, where you'll never see it If you want to see the "Press any key to continue..." message, remove the pipe. Also, this doesn't seem to work in PowerShel...