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How can I use numpy.correlate to do autocorrelation?
...nction, is to itself at a certain time difference. At a time difference of 0, the auto-correlation should be the highest because the signal is identical to itself, so you expected that the first element in the autocorrelation result array would be the greatest. However, the correlation is not starti...
Likelihood of collision using most significant bits of a UUID in Java
...east significant half. So the most significant half of your UUID contains 60 bits of randomness, which means you on average need to generate 2^30 UUIDs to get a collision (compared to 2^61 for the full UUID).
So I would say that you are rather safe. Note, however that this is absolutely not true fo...
Any way to force strict mode in node?
...d you can now place
"use strict";
at the top of your file in node >= 0.10.7, but if you want your whole app to run in strict (including external modules) you can do this
node --use_strict
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Django's SuspiciousOperation Invalid HTTP_HOST header
...re is discussion right now by the Django developers to change this from a 500 internal server error to a 400 response. See this ticket.
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The order of elements in Dictionary
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edited Oct 24 '10 at 18:38
answered Oct 24 '10 at 10:03
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What is android:weightSum in android, and how does it work?
...tent"
android:layout_weight="1"
android:layout_width="0dp"/>
.....
weightSum is useful for having the layout rendered correctly for any device, which will not happen if you set width and height directly.
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Representing graphs (data structure) in Python
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answered Jun 10 '15 at 4:16
mVChrmVChr
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How do I reference a Django settings variable in my models.py?
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Arbazz Hussain
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answered Oct 23 '11 at 17:31
juankysmithjuankysmith
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ALTER TABLE, set null in not null column, PostgreSQL 9.1
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ALTER TABLE person ALTER COLUMN phone DROP NOT NULL;
More details in the manual: http://www.p...
R data formats: RData, Rda, Rds etc
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KenMKenM
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