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Float vs Decimal in ActiveRecord
... a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.10000000000000000555111512312578270...
Shuffle two list at once with same order
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– Jaroslav Klimčík
Apr 25 '14 at 10:15
4
(noob question) - what does the * mean?
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Remove first 4 characters of a string with PHP
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edited Nov 26 '10 at 15:23
answered Nov 26 '10 at 15:16
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Installing CocoaPods: no response
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10
Just a note for -V (it is in uppercase) :D
– onmyway133
Nov 6 '13 at 7:10
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Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
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user247702
21.2k1212 gold badges100100 silver badges142142 bronze badges
answered Jan 13 '10 at 17:30
Eric LippertEric Lippert
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How to declare constant map
... a pseudo-constant), you can do:
var romanNumeralDict = map[int]string{
1000: "M",
900 : "CM",
500 : "D",
400 : "CD",
100 : "C",
90 : "XC",
50 : "L",
40 : "XL",
10 : "X",
9 : "IX",
5 : "V",
4 : "IV",
1 : "I",
}
Inside a func you can declare it like:
romanNum...
JSON.parse vs. eval()
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110
You are more vulnerable to attacks if using eval: JSON is a subset of Javascript and json.pars...
vector vs. list in STL
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answered Feb 5 '10 at 17:56
Martin YorkMartin York
226k7171 gold badges302302 silver badges521521 bronze badges
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Comment out text in R Markdown (Rmd file)
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edited Mar 10 at 6:10
answered Apr 24 '19 at 2:18
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No “pull” in Git Gui?
...um post:
http://git.661346.n2.nabble.com/No-quot-pull-quot-in-git-gui-td1121058.html
A fetch and merge should be done.
It seems you need to go to "Remote" menu, then "Fetch from" option , in my case origin, and then go to "Merge Menu" and then "Local Merge...".
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