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使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
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使用虚拟现实和App Inventor进行实验
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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
5,4761212 gold badges6161 silver badges103103 bronze badges
answered May 5 '09 at 1:04
JasonSmithJasonSmith
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How to git reset --hard a subdirectory?
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VonCVonC
985k405405 gold badges33953395 silver badges39913991 bronze badges
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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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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...
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...