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Which kind of pointer do I use when?
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+100
Shared ownership:
The shared_ptr and weak_ptr the standard adopted are pretty much the same as their Boost counterparts. Use them wh...
Find column whose name contains a specific string
...a = {'spike-2': [1,2,3], 'hey spke': [4,5,6], 'spiked-in': [7,8,9], 'no': [10,11,12]}
df = pd.DataFrame(data)
spike_cols = [col for col in df.columns if 'spike' in col]
print(list(df.columns))
print(spike_cols)
Output:
['hey spke', 'no', 'spike-2', 'spiked-in']
['spike-2', 'spiked-in']
Explana...
Split by comma and strip whitespace in Python
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answered Nov 1 '10 at 17:30
Sean VieiraSean Vieira
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How do Mockito matchers work?
...nts left-to-right before invoking a method:
when(foo.quux(anyInt(), and(gt(10), lt(20)))).thenReturn(true);
[6] [5] [1] [4] [2] [3]
This will:
Add anyInt() to the stack.
Add gt(10) to the stack.
Add lt(20) to the stack.
Remove gt(10) and lt(20) and add and(gt(10), lt(20)).
Call foo...
Redis key naming conventions?
...ema. For instance "object-type:id:field" can be
a nice idea, like in "user:1000:password". I like to use dots for
multi-words fields, like in "comment:1234:reply.to".
Are you able to query for just the beginning of the key to return all
users?
If you mean someting like directly querying for ...
HTTP GET with request body
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edited Jul 26 at 10:10
gagarwa
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answered Jun 11 '09 at 20:...
What is the maximum value for an int32?
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My mnemonic: 2^10 is very near to 1000, so 2^(3*10) is 1000^3 or about 1 billion. One of the 32 bits is used for sign, so the max value is really only 2^31, which is about twice the amount you get for 2^(3*10): 2 billion.
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How to make join queries using Sequelize on Node.js
... pkyeck
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answered Dec 9 '13 at 9:28
Jan Aagaard MeierJan Aagaard Meier
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How can I build multiple submit buttons django form?
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Ayman HouriehAyman Hourieh
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Understanding the difference between __getattr__ and __getattribute__
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answered Nov 28 '10 at 6:55
pyfuncpyfunc
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