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Get decimal portion of a number with JavaScript
I have float numbers like 3.2 and 1.6 .
22 Answers
22
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Extracting the last n characters from a ruby string
... a one liner, you can put a number greater than the size of the string:
"123".split(//).last(5).to_s
For ruby 1.9+
"123".split(//).last(5).join("").to_s
For ruby 2.0+, join returns a string
"123".split(//).last(5).join
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Uninstall all installed gems, in OSX?
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Rubygems >= 2.1.0
gem uninstall -aIx
a removes all versions
I ignores dependencies
x includes executables
Rubgems < 2.1.0
for i in `gem list --no-versions`; do gem uninstall -aIx $i; done
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Best way to merge two maps and sum the values of same key?
...> import Scalaz._
import Scalaz._
scala> val map1 = Map(1 -> 9 , 2 -> 20)
map1: scala.collection.immutable.Map[Int,Int] = Map(1 -> 9, 2 -> 20)
scala> val map2 = Map(1 -> 100, 3 -> 300)
map2: scala.collection.immutable.Map[Int,Int] = Map(1 -> 100, 3 -> 300)
scala&g...
Javascript equivalent of Python's zip function
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2016 update:
Here's a snazzier Ecmascript 6 version:
zip= rows=>rows[0].map((_,c)=>rows.map(row=>row[c]))
Illustration equiv. to Python{zip(*args)}:
> zip([['row0col0', 'row0col1', 'row0col2'],
['row1c...
How to redirect and append both stdout and stderr to a file with Bash?
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2052
cmd >>file.txt 2>&1
Bash executes the redirects from left to right as follows:...
Add comma to numbers every three digits
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12 Answers
12
Active
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Reordering arrays
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224
The syntax of Array.splice is:
yourArray.splice(index, howmany, element1, /*.....,*/ elementX...
How to calculate a Mod b in Casio fx-991ES calculator
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Now do your calculation (in comp mode), like 50 / 3 and you will see 16 2/3, thus, mod is 2. Or try 54 / 7 which is 7 5/7 (mod is 5).
If you don't see any fraction then the mod is 0 like 50 / 5 = 10 (mod is 0).
The remainder fraction is shown in reduced form, so 60 / 8 will result in 7 1/2. Rema...