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Co<em>nem>vert a float64 to a<em>nem> i<em>nem>t i<em>nem> Go
... a stri<em>nem>g. I k<em>nem>ow I ca<em>nem> use fmt.Spri<em>nem>tf to co<em>nem>vert a<em>nem>ythi<em>nem>g to a stri<em>nem>g, <em>a<em>nem>dem> the<em>nem> strco<em>nem>v it to the data type I <em>nem>eed, but this extra co<em>nem>versio<em>nem> seems a bit clumsy - is there a better way to do this?
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How to co<em>nem>vert a stri<em>nem>g or i<em>nem>teger to bi<em>nem>ary i<em>nem> Ruby?
How do you create i<em>nem>tegers 0..9 <em>a<em>nem>dem> math operators + - * / i<em>nem> to bi<em>nem>ary stri<em>nem>gs.
For example:
6 A<em>nem>swers
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HTTP header li<em>nem>e break style
...ch li<em>nem>e break style is preferable for use i<em>nem> HTTP headers: \r\<em>nem> or \<em>nem> , <em>a<em>nem>dem> why?
3 A<em>nem>swers
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HashMap get/put complexity
...ta<em>nem>t time... but you could have a hash which takes a lo<em>nem>g time to compute, <em>a<em>nem>dem> if there are multiple items i<em>nem> the hash map which retur<em>nem> the same hash code, get will have to iterate over them calli<em>nem>g equals o<em>nem> each of them to fi<em>nem>d a match.
I<em>nem> the worst case, a HashMap has a<em>nem> O(<em>nem>) lookup due to walki...
Divide a <em>nem>umber by 3 without usi<em>nem>g *, /, +, -, % operators
... because:
<em>nem> = 4 * a + b
<em>nem> / 3 = a + (a + b) / 3
So sum += a, <em>nem> = a + b, <em>a<em>nem>dem> iterate
Whe<em>nem> a == 0 (<em>nem> < 4), sum += floor(<em>nem> / 3); i.e. 1, if <em>nem> == 3, else 0
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Overlayi<em>nem>g histograms with ggplot2 i<em>nem> R
I am <em>nem>ew to R <em>a<em>nem>dem> am tryi<em>nem>g to plot 3 histograms o<em>nem>to the same graph.
Everythi<em>nem>g worked fi<em>nem>e, but my problem is that you do<em>nem>'t see where 2 histograms overlap - they look rather cut off.
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What is the Scala a<em>nem><em>nem>otatio<em>nem> to e<em>nem>sure a tail recursive fu<em>nem>ctio<em>nem> is optimized?
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From the "Tail calls, @tailrec <em>a<em>nem>dem> trampoli<em>nem>es" blog p<em>osem>t:
I<em>nem> Scala 2.8, you will also be able to use the <em>nem>ew @tailrec a<em>nem><em>nem>otatio<em>nem> to get i<em>nem>formatio<em>nem> about which methods are optimised.
This a<em>nem><em>nem>otatio<em>nem> lets you mark specific methods that you hope th...
Remove a<em>nem> eleme<em>nem>t from a Bash array
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The followi<em>nem>g works as you would like i<em>nem> bash <em>a<em>nem>dem> zsh:
$ array=(pluto pippo)
$ delete=pluto
$ echo ${array[@]/$delete}
pippo
$ array=( "${array[@]/$delete}" ) #Quotes whe<em>nem> worki<em>nem>g with stri<em>nem>gs
If <em>nem>eed to delete more tha<em>nem> o<em>nem>e eleme<em>nem>t:
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$ delete=(pluto pippo)
for de...
Efficie<em>nem>t evaluatio<em>nem> of a fu<em>nem>ctio<em>nem> at every cell of a <em>Nem>umPy array
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You could just vectorize the fu<em>nem>ctio<em>nem> <em>a<em>nem>dem> the<em>nem> apply it directly to a <em>Nem>umpy array each time you <em>nem>eed it:
import <em>nem>umpy as <em>nem>p
def f(x):
retur<em>nem> x * x + 3 * x - 2 if x > 0 else x * 5 + 8
f = <em>nem>p.vectorize(f) # or use a differe<em>nem>t <em>nem>ame if you wa<em>nem>t to keep the...
How to save traceback / sys.exc_i<em>nem>fo() values i<em>nem> a variable?
I wa<em>nem>t to save the <em>nem>ame of the error <em>a<em>nem>dem> the traceback details i<em>nem>to a variable. Here's is my attempt.
5 A<em>nem>swers
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