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quick random row selection in Postgres
...or(random()*N) LIMIT 1;
Consider a table of 2 rows; random()*N generates 0 <= x < 2 and for example SELECT myid FROM mytable OFFSET 1.7 LIMIT 1; returns 0 rows because of implicit rounding to nearest int.
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Where is the “Fold” LINQ Extension Method?
... use the Aggregate extension method:
double product = doubles.Aggregate(1.0, (prod, next) => prod * next);
See MSDN for more information. It lets you specify a seed and then an expression to calculate successive values.
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Python Request Post with param data
...could split out the URL parameters as well:
params = {'sessionKey': '9ebbd0b25760557393a43064a92bae539d962103', 'format': 'xml', 'platformId': 1}
then post your data with:
import requests
url = 'http://192.168.3.45:8080/api/v2/event/log'
data = {"eventType": "AAS_PORTAL_START", "data": {"uid":...
How can I change UIButton title color?
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answered Mar 19 '10 at 0:39
Ben GottliebBen Gottlieb
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writing some characters like '
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answered Jul 2 '10 at 15:13
reecereece
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How can building a heap be O(n) time complexity?
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I think there are several questions buried in this topic:
How do you implement buildHeap so it ...
How do I include a path to libraries in g++
... Ernest Friedman-HillErnest Friedman-Hill
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Accessing an array out of bounds gives no error, why?
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edited Mar 22 '17 at 0:40
Jonathan Leffler
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WPF Button with Image
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answered Apr 23 '10 at 9:15
wpfwannabewpfwannabe
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How to hide a View programmatically?
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Sufian
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answered Apr 22 '11 at 13:58
Erich DouglassE...