Horse racing: Difference between revisions
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→{{header|Wren}}: Minor tidy
SqrtNegInf (talk | contribs) m (→{{header|Perl}}: oops) |
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=={{header|Go}}==
{{trans|Wren}}
<
import (
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sec := t - float64(min)*60
fmt.Printf("\nTime %d minute %3.1f seconds\n", min, sec)
}</
{{out}}
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=={{header|Julia}}==
{{trans|Go}}
<
# ratings on past form, assuming a rating of 100 for horse A
a = 100
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main()
</
<pre>
Race 4
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=={{header|Nim}}==
{{trans|Wren}}
<
# Ratings on past form, assuming a rating of 100 for horse A.
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var min = int(t / 60)
var sec = t mod 60
echo &"\nTime {min} minute {sec:.1f} seconds"</
{{out}}
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=={{header|Perl}}==
{{trans|Raku}}
<
use warnings;
my %card;
$card{a} = { name => 'Alberta Clipper', sex => 'M', rating => 100 };
$card{b} = { name => 'Beetlebaum', sex => 'F', rating => $card{a}{rating} - 8 - 2*2 };
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}
print for sort @predictions;</
{{out}}
<pre> 1 i Iphigenia in Brooklyn 8.11 0.0 filly 1:35.4
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Disclaimer: I know nothing about horse racing, all calculations were reverse-engineered from those in the Go entry.<br>
Made table-based so you can plug in different races and adjustments, but any horse appearing in more than one race input would too in the output.
<!--<
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #7060A8;">requires</span> <span style="color: #0000FF;">(</span><span style="color: #008000;">"1.0.1"</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">// [else sort_columns() needs a deep_copy()]</span>
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<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">elapsed</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">,</span><span style="color: #000000;">60</span><span style="color: #0000FF;">))</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\nTime %s %s\n"</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">s</span><span style="color: #0000FF;">})</span>
<!--</
{{out}}
<pre>
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=={{header|Raku}}==
I know nothing about horse racing and/or handicapping. This is mostly a straightforward translation of the logic from Go though I did take certain liberties with formatting and layout.
<syntaxhighlight lang="raku"
%card<a> = { name => 'Alberta Clipper', :sex<M>, rating => 100 };
%card<b> = { name => 'Beetlebaum', :sex<F>, rating => %card<a><rating> - 8 - 2*2 };
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printf "%2d %s %-22s %.2f %.1f %-6s %s\n", $position, .key, .value<name>, .value<weight>,
.value<back>, .value<sex> eq 'M' ?? 'colt' !! 'filly', .value.<time>.polymod(60 xx*).reverse.join: ':';
}</
{{out}}
<pre>Pos Horse Name Weight Back Sex Time
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8 c Canyonero 9.00 6.5 colt 1:36.7
9 g Grindstone 9.00 7.0 colt 1:36.8</pre>
=={{header|V (Vlang)}}==
{{trans|go}}
<syntaxhighlight lang="v (vlang)">struct Kv {
key string
value []f64
}
fn main() {
// ratings on past form, assuming a rating of 100 for horse A
a := 100.0
mut b := a - 8 - 2*2 // carried 8 lbs less, finished 2 lengths behind
mut c := a + 4 - 2*3.5
mut d := a - 4 - 10*0.4 // based on relative weight and time
e := d + 7 - 2*1
f := d + 11 - 2*(4-2)
g := a - 10 + 10*0.2
mut h := g + 6 - 2*1.5
mut i := g + 15 - 2*2
// adjustments to ratings for current race
b += 4
c -= 4
h += 3
mut j := a - 3 + 10*0.2
// filly's allowance to give weight adjusted weighting
b += 3
d += 3
i += 3
j += 3
// create map of horse to its weight adjusted rating and whether colt (1 == yes, 0 == no)
m := {
"A": [a, 1],
"B": [b, 0],
"C": [c, 1],
"D": [d, 0],
"E": [e, 1],
"F": [f, 1],
"G": [g, 1],
"H": [h, 1],
"I": [i, 0],
"J": [j, 0],
}
// convert to slice of Kv
mut l := []Kv{ len: m.len}
mut x := 0
for k, v in m {
l[x] = Kv{k, v}
x++
}
// sort in descending order of rating
//sort.Slice(l, func(i, j int) bool { return l[i].value[0] > l[j].value[0] })
l.sort_with_compare(fn(a &Kv, b &Kv) int {
if a.value[0] < b.value[0] {
return 1
}else if a.value[0] > b.value[0] {
return -1
}
return 0
})
// show expected result of race
println("Race 4\n")
println("Pos Horse Weight Dist Sex")
mut pos := ""
for v in 0..l.len {
mut wt := "9.00"
if l[v].value[1] == 0 {
wt = "8.11"
}
mut dist := 0.0
if v > 0 {
dist = (l[v-1].value[0]-l[v].value[0]) * 0.5
}
if v == 0 || dist > 0.0 {
pos = "${v+1}"
} else {
if pos.index('=') or {-1} < 0{
pos = "${v}="
}
}
mut sx := "colt"
if l[v].value[1] == 0 {
sx = "filly"
}
println("${pos:-2} ${l[v].key} $wt ${dist:3.1f} $sx")
}
// weight adjusted rating of winner
wr := l[0].value[0]
// expected time of winner (relative to A's time in Race 1)
t := 96.0 - (wr-100)/10
min := int(t / 60)
sec := t - f64(min)*60
println("\nTime $min minute ${sec:3.1f} seconds")
}</syntaxhighlight>
{{out}}
<pre>Same as go entry</pre>
=={{header|Wren}}==
{{libheader|Wren-fmt}}
<
// ratings on past form, assuming a rating of 100 for horse A
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var min = (t/60).floor
var sec = t % 60
System.print("\nTime %(min) minute %(sec) seconds")</
{{out}}
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