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Float vs Decimal in ActiveRecord
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irb:001:0> "%.47f" % (1.0/10)
=> "0.10000000000000000555111512312578270211815834045" # not "0.1"!
whereas if you just do
irb:002:0> (1.0/10).to_s
=> "0.1" # the interprer rounds the number for you
So if you are dealing with small fractions, like compounding interests, or maybe even...
ElasticSearch - Return Unique Values
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bradvidobradvido
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2
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How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
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In OS X Lion, LANG is not set to UTF-8, how to fix it?
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Difference between await and ContinueWith
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Jon SkeetJon Skeet
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Shuffle two list at once with same order
...ond argument, it uses the function random.random(). You can see it at line 277 here.)
This example illustrates what I described:
import random
a = ['a', 'b', 'c', 'd', 'e']
b = [1, 2, 3, 4, 5]
r = random.random() # randomly generating a real in [0,1)
random.shuffle(a, lambda : r) # ...
What are the differences between a clustered and a non-clustered index?
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271
Clustered Index
Only one per table
Faster to read than non clustered as data is physically s...
Best practices for using Markers in SLF4J/Logback
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answered Aug 27 at 11:48
Philippe TcherniatinskyPhilippe Tcherniatinsky
111 bronze badge
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C++ error: undefined reference to 'clock_gettime' and 'clock_settime'
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Pavel
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answered Sep 18 '15 at 10:05
P.PP.P
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Why main does not return 0 here?
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