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Clojure: reduce vs. apply
... answered Jun 30 '10 at 21:30
G__G__
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Python Progress Bar
... but maybe something very simple would do:
import time
import sys
toolbar_width = 40
# setup toolbar
sys.stdout.write("[%s]" % (" " * toolbar_width))
sys.stdout.flush()
sys.stdout.write("\b" * (toolbar_width+1)) # return to start of line, after '['
for i in xrange(toolbar_width):
time.sleep(...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
...+ b[k]) for k in set(b) & set(a)])
or even more generic:
def combine_dicts(a, b, op=operator.add):
return dict(a.items() + b.items() +
[(k, op(a[k], b[k])) for k in set(b) & set(a)])
For example:
>>> a = {'a': 2, 'b':3, 'c':4}
>>> b = {'a': 5, 'c':6, 'x':7...
Static Indexers?
...
+1 for Malfist's comment. Just because it uses "this" for an instance indexer doesn't mean they couldn't come up with other syntax.
– Jon Skeet
Dec 30 '08 at 20:19
...
How to get notified about changes of the history via history.pushState?
...late the whole code into an IIFE: en.wikipedia.org/wiki/Immediately-invoked_function_expression
– gblazex
Nov 16 '13 at 14:55
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show 15 more...
How can I restore the MySQL root user’s full privileges?
...ue the following commands in the mysql client:
UPDATE mysql.user SET Grant_priv='Y', Super_priv='Y' WHERE User='root';
FLUSH PRIVILEGES;
After that, you should be able to run GRANT ALL ON *.* TO 'root'@'localhost'; and have it work.
...
Evenly distributing n points on a sphere
... And here's a simple implementation in python.
import math
def fibonacci_sphere(samples=1):
points = []
phi = math.pi * (3. - math.sqrt(5.)) # golden angle in radians
for i in range(samples):
y = 1 - (i / float(samples - 1)) * 2 # y goes from 1 to -1
radius = math....
Difference Between One-to-Many, Many-to-One and Many-to-Many?
...ate is the one side and City is the many side. There will be a column state_id in the table cities.
In unidirectional, Person class will have List<Skill> skills but
Skill will not have Person person. In bidirectional, both
properties are added and it allows you to access a Person given a
ski...
How can I pass a parameter to a setTimeout() callback?
...o = "Hello World";
setTimeout(alert, 1000, hello);
More details:
https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers.setTimeout
http://arguments.callee.info/2008/11/10/passing-arguments-to-settimeout-and-setinterval/
...
Python append() vs. + operator on lists, why do these give different results?
...ut answering the questions asked? People ask why PHP is called PHP and why __lt__ could not be overloaded in Python (nowadays it can). Why-questions are the most essential ones but often the trickiest to answer: they ask for the essence, not for a pointer to the manual. And of course: if you dislike...