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What is the Scala annotation to ensure a tail recursive function is optimized?
...ps and tricks):
C:\Prog\Scala\tests>scala
Welcome to Scala version 2.8.0.RC5 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_18).
Type in expressions to have them evaluated.
Type :help for more information.
scala> import scala.annotation.tailrec
import scala.annotation.tailrec
scala> clas...
How do I set a column value to NULL in SQL Server Management Studio?
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Jan 14 '09 at 21:05
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C#: how to get first char of a string?
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Just MyString[0]. This uses the String.Chars indexer.
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Emulate ggplot2 default color palette
...on(n) {
hues = seq(15, 375, length = n + 1)
hcl(h = hues, l = 65, c = 100)[1:n]
}
For example:
n = 4
cols = gg_color_hue(n)
dev.new(width = 4, height = 4)
plot(1:n, pch = 16, cex = 2, col = cols)
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Base64 encoding and decoding in client-side Javascript
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Some browsers such as Firefox, Chrome, Safari, Opera and IE10+ can handle Base64 natively. Take a look at this Stackoverflow question. It's using btoa() and atob() functions.
For server-side JavaScript (Node), you can use Buffers to decode.
If you are going for a cross-browser solut...
JavaScript open in a new window, not tab
... here for all the possible options.
window.open(url, windowName, "height=200,width=200");
When you specify a width/height, it will open it in a new window instead of a tab.
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What is more efficient? Using pow to square or just multiply it with itself?
... expression) \
double test##num(double b, long loops) \
{ \
double x = 0.0; \
\
boost::posix_time::ptime startTime = now(); \
for (long i=0; i<loops; ++i) \
{ \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x +=...
Bash empty array expansion with `set -u`
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The only safe idiom is ${arr[@]+"${arr[@]}"}
This is already the recommendation in ikegami's an...
Why does parseInt yield NaN with Array#map?
...ex of the element.
In this case, you ended up calling parseInt with radix 0, 1 and 2 in turn. The first is the same as not supplying the parameter, so it defaulted based on the input (base 10, in this case). Base 1 is an impossible number base, and 3 is not a valid number in base 2:
parseInt('1'...
CSS selector for a checked radio button's label
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DazBaldwin
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answered Sep 16 '09 at 8:54
StephenStephen
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