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Is it worth using Python's re.compile?
...time it takes to check the cache (a key lookup on an internal dict type).
From module re.py (comments are mine):
def match(pattern, string, flags=0):
return _compile(pattern, flags).match(string)
def _compile(*key):
# Does cache check at top of function
cachekey = (type(key[0]),) + k...
How do you do Impersonation in .NET?
...
That link from the Dutch programmer's blog was excellent. Much more intuitive approach to impersonation than the other techniques presented.
– code4life
Aug 22 '16 at 23:26
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How can I wait for a thread to finish with .NET?
...th MTAThread - however this blocks your message pump and isn't recommended from what I've read.
3. Fire an event
See this page by Jon Skeet about events and multi-threading. It's possible that an event can become unsubcribed between the if and the EventName(this,EventArgs.Empty) - it's happened to ...
How to get the position of a character in Python?
...;stdin>", line 1, in <module>
ValueError: substring not found
From the Python manual
string.find(s, sub[, start[, end]])
Return the lowest index in s where the substring sub is found such that sub is wholly contained in s[start:end]. Return -1 on failure. Defaults for start and en...
How do you overcome the HTML form nesting limitation?
... but HTML5 offers a couple new options.
The first is to separate the form from the toolbar in the markup, add another form for the delete action, and associate the buttons in the toolbar with their respective forms using the form attribute.
<form id="saveForm" action="/post/dispatch/save" metho...
How to split text without spaces into list of words?
...logarithm of the inverse of the probability to avoid overflows.
The code
from math import log
# Build a cost dictionary, assuming Zipf's law and cost = -math.log(probability).
words = open("words-by-frequency.txt").read().split()
wordcost = dict((k, log((i+1)*log(len(words)))) for i,k in enumerat...
MongoDB with redis
Can anyone give example use cases of when you would benefit from using Redis and MongoDB in conjunction with each other?
3 ...
UIGestureRecognizer on UIImageView
...y setting its userInteractionEnabled property to YES. UIImageView inherits from UIView, whose user interaction property is set to YES by default, however, UIImageView's user interaction property is set to NO by default.
From the UIImageView docs:
New image view objects are configured to disrega...
AngularJS access scope from outside js function
...ed to use $scope.$apply() if you want to make any changes to a scope value from outside the control of angularjs like a jquery/javascript event handler.
function change() {
alert("a");
var scope = angular.element($("#outer")).scope();
scope.$apply(function(){
scope.msg = 'Superh...
What is getattr() exactly and how do I use it?
...ct.x, because you don't know in advance which attribute you want (it comes from a string). Very useful for meta-programming.
you want to provide a default value. object.y will raise an AttributeError if there's no y. But getattr(object, 'y', 5) will return 5.
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