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Is a GUID unique 100% of the time?
...he total
number of unique keys (2128 or
3.4×1038) is so large that the probability of the same number being
generated twice is very small. For
example, consider the observable
universe, which contains about 5×1022
stars; every star could then have
6.8×1015 universally unique GUIDs.
From Wikipedi...
Is there an “exists” function for jQuery?
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2520
In JavaScript, everything is 'truthy' or 'falsy', and for numbers 0 means false, everything e...
Showing which files have changed between two revisions
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Norfeldt
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answered May 5 '09 at 1:04
JasonSmithJasonSmith
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How to git reset --hard a subdirectory?
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VonCVonC
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python's re: return True if string contains regex pattern
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import re
word = 'fubar'
regexp = re.compile(r'ba[rzd]')
if regexp.search(word):
print 'matched'
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URL encoding in Android
...dj-videos.us/Music/XclusiveSinGleTrack/320%20Kbps/… The %20 is coded to %2520
– berserk
Jan 7 '14 at 7:17
2
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使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索
使用虚拟现实和App Inventor进行实验
...
Best way to replace multiple characters in a string?
...','+','-','.','!','$','\'']:
text = text.replace(ch,"\\"+ch)
def ba(text):
chars = "\\`*_{}[]()>#+-.!$"
for c in chars:
if c in text:
text = text.replace(c, "\\" + c)
With the shorter input:
ab) 100000 loops, best of 3: 7.05 μs per loop
ba) 100000 loops,...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...at the extensions mechanism is still unstable and under development. Any aia files you build in steps (1) a
Using App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector extension
App Inventor does...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...at the extensions mechanism is still unstable and under development. Any aia files you build in steps (1) a
Using App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector extension
App Inventor does...