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Using python map and other functional tools
...sions), but this will help you understand what map does a bit better:
def my_transform_function(input):
return [input, [1, 2, 3]]
new_list = map(my_transform, input_list)
Notice at this point, you've only done a data manipulation. Now you can print it:
for n,l in new_list:
print n, ll
...
Using module 'subprocess' with timeout
...mand.run(timeout=3)
command.run(timeout=1)
The output of this snippet in my machine is:
Thread started
Process started
Process finished
Thread finished
0
Thread started
Process started
Terminating process
Thread finished
-15
where it can be seen that, in the first execution, the process
finishe...
Avoiding instanceof in Java
... if it is confined to one method and I would happily use it (probably over my own suggestion above). As you say, its quite readable, typesafe and maintainable. As always, keep it simple.
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im...
How do I get a value of datetime.today() in Python that is “timezone aware”?
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@AndiDog: My comment implies that I thought (incorrectly) that datetime.today() is combine(date.today(), time()). datetime has both .now() and .today() methods that (as you've correctly pointed out) return (almost) the same thing. Ther...
Why use a prime number in hashCode?
...a class's hashCode() method? For example, when using Eclipse to generate my hashCode() method there is always the prime number 31 used:
...
How do I parallelize a simple Python loop?
...Input)(i) for i in inputs)
print(results)
The above works beautifully on my machine (Ubuntu, package joblib was pre-installed, but can be installed via pip install joblib).
Taken from https://blog.dominodatalab.com/simple-parallelization/
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PHP + MySQL transactions examples
I really haven't found normal example of PHP file where MySQL transactions are being used. Can you show me simple example of that?
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Why is there no String.Empty in Java?
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@StephenC When I see an empty "" the first thing jumps in my mind that it's a bug, someone not finished the function etc. With String.EMPTY I know exactly that the developer intended to return an empty string.
– Lakatos Gyula
Mar 3 '15 at 18:32...
Is it safe to push_back an element from the same vector?
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I'm upvoting now as this is my recollection as well, but a reference is needed.
– bames53
Sep 13 '13 at 14:55
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How to empty a redis database?
...y to empty the db (remove the sets, the existing key....) easily.
During my tests, I created several sets with a lot of members, even created sets that I do not remember the name (how can I list those guys though ?).
Any idea about how to get rid of all of them ?
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