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Python extract pattern matches

... You need to capture from regex. search for the pattern, if found, retrieve the string using group(index). Assuming valid checks are performed: >>> p = re.compile("name (.*) is valid") >>> result = p.search(s) >>> result <_sre.SRE_Matc...
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KIO4_Gradient 拓展:布局中的颜色渐变 - App Inventor 2 中文网 - 清泛IT...

http://kio4.com/appinventor/287_extension_gradiente_color.htm - 让我们看一下在布局中制作颜色渐变的扩展。- 我们放置一个布局,然后在该扩展的块中插入该布局的名称,放置一个包含所需颜色的列表,以及一个从 1 到 8 的数字,用于表示...
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How to count the number of set bits in a 32-bit integer?

... will be mostly 0's or mostly 1's then there are very efficient algorithms for these scenarios. I believe a very good general purpose algorithm is the following, known as 'parallel' or 'variable-precision SWAR algorithm'. I have expressed this in a C-like pseudo language, you may need to adjust it t...
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Google Maps: how to get country, state/province/region, city given a lat/long value?

...es based on a collection of lat/long values I have. I need to store this information in a manner that hierarchy is preserve and without duplicates (e.g. "USA" and "United States" and "United States of America" are the same country; I only want one instance of this country in my database). ...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

...kes place in several steps, as specified by 2.2 (credits to Keith Thompson for the reference): The precedence among the syntax rules of translation is specified by the following phases [see footnote]. Physical source file characters are mapped, in an implementation-defined manner, to the basic sou...
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What is the difference between Python's list methods append and extend?

... So with extend, each element of the iterable gets appended onto the list. For example: >>> my_list ['foo', 'bar'] >>> another_list = [1, 2, 3] >>> my_list.extend(another_list) >>> my_list ['foo', 'bar', 1, 2, 3] Keep in mind that a string is an iterable, so if...
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urllib2.HTTPError: HTTP Error 403: Forbidden

...Mee did you take a look at the answer below? it was addressed specifically for python 3, check if it works for you... – andrean Jan 19 '15 at 21:07 1 ...
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Generic deep diff between two objects

... can be further enhanced to take function as argument that will be used to format diff object in arbitrary way based on passed primitive values (now this job is done by "compareValues" method). var deepDiffMapper = function () { return { VALUE_CREATED: 'created', VALUE_UPDATED: 'update...
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Check if OneToOneField is None in Django

... Thank you for this solution. Unfortunately, this doesn't work all the time. In case you want to work with select_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere...
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How do I concatenate or merge arrays in Swift?

...elligence extends to determining whether the b part of a is modified (therefore possibly eliding a copy of b during a.appendContentsOf(b))? – Ephemera Sep 20 '15 at 7:34 1 ...