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@dogbert17
dogbert17 / euler-12.raku
Created October 7, 2021 12:57
Runs faster with expr-jit turned off
# What is the value of the first triangle number to have over five hundred divisors?
use v6;
my $numFactors = 500;
my $sum = 0;
for (1...*) -> $term {
$sum += $term;
my $factors = (1..floor(sqrt($sum))).grep( -> $x { $sum % $x == 0} ).elems * 2;
$factors-- if floor(sqrt($sum)) == sqrt($sum);
if $factors > $numFactors {
@bduggan
bduggan / rsa.p6
Last active October 12, 2016 14:48
sub random-prime(:$digits) {
repeat { $_ = (10**$digits .. (10**($digits+1))).pick } until .is-prime;
return $_;
}
sub encrypt(:$message, :$key) {
return expmod($message,$key[0],$key[1])
}
sub decrypt(:$message, :$key) {
@jnthn
jnthn / s17-changes.md
Last active October 13, 2015 02:59
Overview of planned some S17 changes, for community review

Changes and syntactic relief for S17

This document describes the eventual intended semantics of await, lays out some syntactic relief for working with supplies, considers the status of channels, and proposes the end of the syntax formerly known as earliest, winner, etc. - which I've never really liked. One further area to be covered in a similar document to this is cancellation.

Feedback welcome! -- jnthn

@emil-perhinschi
emil-perhinschi / native_call.p6
Created June 26, 2014 21:46
perl6 native call libgsl segmentation fault
emilper@main:~/bin/nqp$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-