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round() doesn't seem to be rounding properly
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answered Sep 11 '08 at 15:11
JimmyJimmy
77.8k1616 gold badges113113 silver badges135135 bronze badges
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How to get week number in Python?
...on.
– Jonathan Leffler
Apr 8 '10 at 15:08
5
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“Ago” date/time functions in Ruby/Rails
...tead of mins.
– cbron
Jan 13 '12 at 15:47
4
If you're outside of Rails, require 'active_support' ...
What does “@@ -1 +1 @@” mean in Git's diff output?
...r instance:
diff -u <(seq -w 16) <(seq -w 16 | grep -Ev '^(02|03|14|15)$')
Here we removed lines 2, 3, 14 and 15. Output:
@@ -1,6 +1,4 @@
01
-02
-03
04
05
06
@@ -11,6 +9,4 @@
11
12
13
-14
-15
16
@@ -1,6 +1,4 @@ means:
-1,6 means that this piece of the first file starts at line ...
Calculate the median of a billion numbers
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answered Apr 3 '10 at 14:15
Steve JessopSteve Jessop
251k3131 gold badges420420 silver badges659659 bronze badges
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What's the best way to store Phone number in Django models
...exp
One note for your model: E.164 numbers have a max character length of 15.
To validate, you can employ some combination of formatting and then attempting to contact the number immediately to verify.
I believe I used something like the following on my django project:
class ReceiverForm(forms.M...
How to know if two arrays have the same values
... they have the same members in any order-
var array1= [10, 6, 19, 16, 14, 15, 2, 9, 5, 3, 4, 13, 8, 7, 1, 12, 18, 11, 20, 17];
var array2= [12, 18, 20, 11, 19, 14, 6, 7, 8, 16, 9, 3, 1, 13, 5, 4, 15, 10, 2, 17];
if(array1.sort().join(',')=== array2.sort().join(',')){
alert('same members');
}
e...
Try-finally block prevents StackOverflowError
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edited Sep 15 '12 at 17:17
answered Sep 15 '12 at 16:25
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Float vs Decimal in ActiveRecord
...do this:
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 ...