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type object 'datetime.datetime' has no attribute 'datetime'
...b/python2.6/lib-dynload/datetime.so'>
>>> datetime.datetime(2001,5,1)
datetime.datetime(2001, 5, 1, 0, 0)
But, if you import datetime.datetime:
>>> from datetime import datetime
>>> datetime
<type 'datetime.datetime'>
>>> datetime.datetime(2001,5,1) # ...
How to get random value out of an array?
I have an array called $ran = array(1,2,3,4);
20 Answers
20
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Making an array of integers in iOS
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160
You can use a plain old C array:
NSInteger myIntegers[40];
for (NSInteger i = 0; i < 40; ...
How to split data into training/testing sets using sample function
...row(mtcars))
## set the seed to make your partition reproducible
set.seed(123)
train_ind <- sample(seq_len(nrow(mtcars)), size = smp_size)
train <- mtcars[train_ind, ]
test <- mtcars[-train_ind, ]
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Does python have an equivalent to Java Class.forName()?
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169
Reflection in python is a lot easier and far more flexible than it is in Java.
I recommend re...
How to remove a field completely from a MongoDB document?
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14 Answers
14
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What is the usefulness of PUT and DELETE HTTP request methods?
...…
For the full specification visit:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
Since current browsers unfortunately do not support any other verbs than POST and GET in HTML forms, you usually cannot utilize HTTP to it's full extent with them (you can still hijack their submission ...
Get most recent file in a directory on Linux
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21 Answers
21
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Why is using the rails default_scope often recommend against?
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193
Problem 1
Lets consider the basic example:
class Post < ActiveRecord::Base
default_sco...