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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... one above(ie @karlphilip 's answer) ? I am sorry I couldn't find any in a fast look (except 3 channel-1 channel and Mathematica-OpenCV).
– Abid Rahman K
Feb 15 '13 at 17:31
2
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What is two way binding?
... one-way binding through a circular pattern. It is based on the concept of fast, holistic re-rendering of UI components upon any data change to ensure cohesiveness and make it easier to reason about the code/dataflow. In the same trend, you might want to check the concept of MVI (Model-View-Intent),...
When splitting an empty string in Python, why does split() return an empty list while split('\n') re
...e is missing, the str.splitlines approach will give the accurate answer.
A faster technique that is also accurate uses the count method but then corrects it for the final newline:
>>> data = '''\
Line 1
Line 2
Line 3
Line 4'''
>>> data.count('\n') # ...
Strip HTML from strings in Python
...rkupSafe library for cross-site scripting prevention. It's convenient and fast (with C speedups to its native Python version). It's included in Google App Engine, and used by Jinja2 (2.7 and up), Mako, Pylons, and more. It works easily with Django templates from Django 1.7.
Django's strip_tags a...
text-overflow:ellipsis in Firefox 4? (and FF5)
... out?!?
Easy there, imaginary, over-reactive person. Firefox is on the fast dev track. FF6 is set for release six weeks after Firefox 5. Firefox 5 is set for release June 21st, 2011.
So that puts the fix sometime in the beginning of August 2011...hopefully.
You can sign up for the mailing li...
How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...orce. Passwords are often dictionary words which can be broken relativity fast. However a private key is a massive number that isn't easy to guess. If the attacker had the public key then they could perform many guesses "offline" on a super computer, but even then it would take a lot of time an...
performSelector may cause a leak because its selector is unknown
...at compile. It is not garbage collection (which is why it is so incredibly fast and low overhead). It is not arbitrary at all. The default rules are based on well-established ObjC conventions that have been consistently applied for decades. This avoids the need to explicitly add an __attribute to ev...
Learn C first before learning Objective-C [closed]
...50% smaller, needs only 25% of the memory it used before and is about 400% faster at runtime.
What I'm trying to say here: Every language has its pros and cons. C has pros and cons and so does Obj-C. However, the really great feature of Obj-C (that's why I even like it more than Java) is that you c...
How do you change Background for a Button MouseOver in WPF?
...y revert to its original BG after the mouseOver state.You can even set how fast the transition.
Resource Dictionary
<Style x:Key="Flat_Button" TargetType="{x:Type Button}">
<Setter Property="Width" Value="100"/>
<Setter Property="Height" Value="50"/>
<Setter Prope...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
... than doubles, so for many calculations single precision will end up being faster.
5) Set your properties as nonatomic. They're atomic by default and upon synthesis, semaphore code will be created to prevent multi-threading problems. 99% of you probably don't need to worry about this and the code i...