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How to remove all the null elements inside a generic list in one go?
...o go; however, this is still a working answer, so I've left it here for anyone unable to use the newer syntax (for whatever reason).
– Mark Bell
Nov 4 '14 at 15:54
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Java Pass Method as Parameter
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@Mac - good! this one comes up again and again in languages without first-class methods as the de-facto way of simulating them, so it's worth remembering.
– Dan Vinton
Feb 2 '10 at 19:37
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PreparedStatement IN clause alternatives?
...supported for multiple values due to SQL injection attack security issues: One ? placeholder represents one value, rather than a list of values.
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How to find the created date of a repository project on GitHub?
...he repository was created.
Considering the LibGit2Sharp repository above, one can see that it's been created on Feb, 2nd 2011 at 16:44:49 UTC.
Note: The created_at won't necessarily reflect the date of the first commit. It's the date the repository has been created on GitHub. For instance, the xun...
Getting activity from context in android
This one has me stumped.
11 Answers
11
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How to use a class from one C# project with another C# project
...bute (more information here: msdn.microsoft.com/en-us/library/…). 3) If none of the above can be done - you will have to use reflection to instantinate and invoke class P1 from P2
– Nissim
Aug 24 '10 at 8:54
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Most lightweight way to create a random string and a random hexadecimal number
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I got a faster one for the hex output. Using the same t1 and t2 as above:
>>> t1 = timeit.Timer("''.join(random.choice('0123456789abcdef') for n in xrange(30))", "import random")
>>> t2 = timeit.Timer("binascii.b2a_hex(o...
How to import a Python class that is in a directory above?
... inherit from a class in a file that lies in a directory above the current one.
7 Answers
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Python name mangling
... touch this!" to your users, the usual way is to precede the variable with one underscore. This is just a convention, but people understand it and take double care when dealing with such stuff:
class Stack(object):
def __init__(self):
self._storage = [] # This is ok but pythonistas use...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...ng at the source code, the synchronized map is only an implementation with one mutex (blocking) while the ConcurrentHashMap is more complex to deal with concurrent access
– Vinze
Feb 4 '09 at 9:36
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