Fix unterminated comment in bidder.go and format.

auctionsim/auction.go

@@ -29,7 +29,6 @@ func RunAuction(g BidderGenerator) (float64, Bidder) {
 	return prevBid, highBidder
 }
 
-
 /**
  * RunAuctionVerbosely simulates a single-bid second-price auction with no
  * reserve price between all bidders emitted by the provided generator,
@@ -39,7 +38,7 @@ func RunAuction(g BidderGenerator) (float64, Bidder) {
  * Use CappedBidderGenerator to limit the size of the auction and therefore
  * the number of bidders on the list.
  */
-func RunAuctionVerbosely(g BidderGenerator) float64, []Bidder {
+func RunAuctionVerbosely(g BidderGenerator) (float64, []Bidder) {
 	var bidders []Bidder
 	for b, ok := g.Generate(); ok; b, ok = g.Generate() {
 		bidders = append(bidders, b)

auctionsim/bidder.go

@@ -5,25 +5,25 @@ package auctionsim
  * not threadsafe. It is a pure value type.
  */
 type Bidder struct {
-    /**
-     * Value stores the real value of the item being auctioned, to this bidder.
-     * If the bidder won the auction at this price, they would make exactly
-     * zero effective profit. It is the "rational bid" in a perfectly efficient
-     * marketplace.
-     *
-     * A bidder that wants some nonzero profit has a lower value on the item by
-     * the amount of profit they want -- that "minimum payoff" represents an
-     * unspecified cost for the time and effort of doing the project at all.
-     * Other costs for getting value out of the object also decrease its value.
-     *
-     * For example, a city to which hosting an F1 race is worth five billion
-     * dollars, but would spend three and a half billion dollars setting up for
-     * it, one billion dollars running it, and lose one billion dollars of tax
-     * revenue due to business disruption during setup and during the event,
-     * correctly values the race for negative five hundred million dollars. As
-     * demonstrated by this example, a value can be negative.
-     * 
-     */
+	/**
+	 * Value stores the real value of the item being auctioned, to this bidder.
+	 * If the bidder won the auction at this price, they would make exactly
+	 * zero effective profit. It is the "rational bid" in a perfectly efficient
+	 * marketplace.
+	 *
+	 * A bidder that wants some nonzero profit has a lower value on the item by
+	 * the amount of profit they want -- that "minimum payoff" represents an
+	 * unspecified cost for the time and effort of doing the project at all.
+	 * Other costs for getting value out of the object also decrease its value.
+	 *
+	 * For example, a city to which hosting an F1 race is worth five billion
+	 * dollars, but would spend three and a half billion dollars setting up for
+	 * it, one billion dollars running it, and lose one billion dollars of tax
+	 * revenue due to business disruption during setup and during the event,
+	 * correctly values the race for negative five hundred million dollars. As
+	 * demonstrated by this example, a value can be negative.
+	 *
+	 */
 	Value float64
 
 	/**
@@ -57,8 +57,9 @@ type Bidder struct {
 /**
  * ValueBelief returns how much the bidder *thinks* the item is worth to them.
  * The actual value to them is b.Value.
+ */
 func (b Bidder) ValueBelief() float64 {
-	return b.Value + b.Irrationality;
+	return b.Value + b.Irrationality
 }
 
 /**
@@ -79,7 +80,7 @@ func (b Bidder) BidCeiling() float64 {
  * than their calculated ceiling if they had the money to do so, but they don't.
  */
 func (b Bidder) CashCapped() bool {
-	return b.ValueBelief() > b.Cash;
+	return b.ValueBelief() > b.Cash
 }
 
 /**

auctionsim/defaults.go

@@ -10,9 +10,9 @@ import (
  */
 func NormalestDistribution() *NormalDistribution {
 	return &NormalDistribution{
-		Rand: rand.New(rand.NewSource(int64(rand.Uint64()))),
+		Rand:   rand.New(rand.NewSource(int64(rand.Uint64()))),
 		StdDev: 1,
-		Mean: 0,
+		Mean:   0,
 	}
 }
 
@@ -24,8 +24,8 @@ func NormalestDistribution() *NormalDistribution {
 func NormalestBidderGenerator() BidderGenerator {
 	d := NormalestDistribution()
 	return &BiddersFromDistributions{
-		Values: d,
+		Values:          d,
 		Irrationalities: d,
-		Bankrolls: ConstDistribution(math.Inf(1)),
+		Bankrolls:       ConstDistribution(math.Inf(1)),
 	}
 }

auctionsim/generators.go

@@ -12,7 +12,7 @@ type Distribution interface {
 	 * Draw returns the next float64 from the distribution and true, or
 	 * zero and false if the distribution is exhausted or otherwise unusable.
 	 */
-	Draw() float64, bool
+	Draw() (float64, bool)
 }
 
 /**
@@ -23,7 +23,7 @@ type BidderGenerator interface {
 	 * Generate returns the next Bidder and true, or a zero Bidder and false if
 	 * the generator is exhausted or otherwise unusable.
 	 */
-	Generate() Bidder, bool
+	Generate() (Bidder, bool)
 }
 
 /**
@@ -31,9 +31,9 @@ type BidderGenerator interface {
  * irrationality levels, and cash on hand from the provided distributions.
  */
 type BiddersFromDistributions struct {
-	Values Distribution
+	Values          Distribution
 	Irrationalities Distribution
-	Bankrolls Distribution
+	Bankrolls       Distribution
 }
 
 /**
@@ -53,10 +53,10 @@ func (b *BiddersFromDistributions) Generate() (Bidder, bool) {
 		return Bidder{}, false
 	}
 
-	return Bidder {
-		Value: value,
+	return Bidder{
+		Value:         value,
 		Irrationality: irrationality,
-		Cash: cash,
+		Cash:          cash,
 	}, true
 }
 
@@ -67,16 +67,16 @@ func (b *BiddersFromDistributions) Generate() (Bidder, bool) {
  * (since rand.Rand is not threadsafe).
  */
 type NormalDistribution struct {
-	Rand *rand.Rand
+	Rand   *rand.Rand
 	StdDev float64
-	Mean float64
+	Mean   float64
 }
 
 /**
  * Draw implements Distribution.
  */
 func (n *NormalDistribution) Draw() (float64, bool) {
-	return n.Rand.NormFloat64() * n.StdDev + n.Mean, true
+	return n.Rand.NormFloat64()*n.StdDev + n.Mean, true
 }
 
 /**
@@ -88,7 +88,7 @@ type ConstDistribution float64
  * Draw implements Distribution.
  */
 func (c ConstDistribution) Draw() (float64, bool) {
-	return (float64)c, true
+	return float64(c), true
 }
 
 /**
@@ -96,7 +96,7 @@ func (c ConstDistribution) Draw() (float64, bool) {
  * then stops returning values.
  */
 type CappedDistribution struct {
-	D Distribution
+	D   Distribution
 	Lim int64
 }
 
@@ -116,7 +116,7 @@ func (c *CappedDistribution) Draw() (float64, bool) {
  * BidderGenerator, then stops returning values.
  */
 type CappedBidderGenerator struct {
-	G BidderGenerator
+	G   BidderGenerator
 	Lim int64
 }
 

go.mod

@@ -0,0 +1,3 @@
+module git.chromaticdragon.app/kistaro/auctionsim
+
+go 1.20