From ffc8b90e98ef3bb537017abee72770a43dd63336 Mon Sep 17 00:00:00 2001
From: surtur <a_mirre@utb.cz>
Date: Fri, 17 Jun 2022 19:55:23 +0200
Subject: [PATCH] chore(go): print algo-stamps without errors

---
 algo/algo.go                        |  9 ++-------
 algo/randomSearch.go                | 13 +++++++++----
 algo/randomSearch_test.go           |  4 +---
 algo/stochasticHillClimbing.go      | 13 +++++++++----
 algo/stochasticHillClimbing_test.go |  4 +---
 5 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/algo/algo.go b/algo/algo.go
index d6786f9..fe92778 100644
--- a/algo/algo.go
+++ b/algo/algo.go
@@ -4,7 +4,6 @@
 package algo
 
 import (
-	"log"
 	"sync"
 )
 
@@ -16,9 +15,7 @@ type Values []float64
 func DoRandomSearch(wg *sync.WaitGroup) {
 	defer wg.Done()
 
-	if err := printRandomSearch("starting..."); err != nil {
-		log.Printf("randomSearch: error printing RandomSearch to stderr: %q", err)
-	}
+	printRandomSearch("starting...")
 }
 
 // DoStochasticHillClimbing performs a search using the 'Stochastic Hill
@@ -26,7 +23,5 @@ func DoRandomSearch(wg *sync.WaitGroup) {
 func DoStochasticHillClimbing(wg *sync.WaitGroup) {
 	defer wg.Done()
 
-	if err := printSHC("starting..."); err != nil {
-		log.Printf("shc: error printing SHC to stderr: %q", err)
-	}
+	printSHC("starting...")
 }
diff --git a/algo/randomSearch.go b/algo/randomSearch.go
index 06bc896..37c4d20 100644
--- a/algo/randomSearch.go
+++ b/algo/randomSearch.go
@@ -20,10 +20,15 @@ func fmtRandomSearchOut(input string) string {
 	return getRandomSearchLogPrefix() + " " + input
 }
 
-func printRandomSearch(input string) error {
-	_, err := fmt.Fprintln(os.Stderr, fmtRandomSearchOut(input))
-
-	return err
+func printRandomSearch(input string) {
+	if _, err := fmt.Fprintln(os.Stderr, fmtRandomSearchOut(input)); err != nil {
+		fmt.Fprintf(
+			os.Stdout,
+			getRandomSearchLogPrefix(),
+			"error while printing to stderr: %q\n * original message was: %q",
+			err, input,
+		)
+	}
 }
 
 func genValsRandomSearch(dimens uint, vals []float64, uniform *distuv.Uniform) {
diff --git a/algo/randomSearch_test.go b/algo/randomSearch_test.go
index 826e6e0..bf9c893 100644
--- a/algo/randomSearch_test.go
+++ b/algo/randomSearch_test.go
@@ -15,7 +15,5 @@ func TestFmtRandomSearchOut(t *testing.T) {
 }
 
 func TestPrintRandomSearch(t *testing.T) {
-	if err := printRandomSearch("whatever"); err != nil {
-		t.Errorf("error while printing to stderr: %q", err)
-	}
+	printRandomSearch("whatever")
 }
diff --git a/algo/stochasticHillClimbing.go b/algo/stochasticHillClimbing.go
index 2c6912a..a263d0a 100644
--- a/algo/stochasticHillClimbing.go
+++ b/algo/stochasticHillClimbing.go
@@ -16,8 +16,13 @@ func fmtSHCOut(input string) string {
 	return getSHCLogPrefix() + " " + input
 }
 
-func printSHC(input string) error {
-	_, err := fmt.Fprintln(os.Stderr, fmtSHCOut(input))
-
-	return err
+func printSHC(input string) {
+	if _, err := fmt.Fprintln(os.Stderr, fmtSHCOut(input)); err != nil {
+		fmt.Fprintf(
+			os.Stdout,
+			getSHCLogPrefix(),
+			"error while printing to stderr: %q\n * original message was: %q",
+			err, input,
+		)
+	}
 }
diff --git a/algo/stochasticHillClimbing_test.go b/algo/stochasticHillClimbing_test.go
index 4ab1f35..846c9f5 100644
--- a/algo/stochasticHillClimbing_test.go
+++ b/algo/stochasticHillClimbing_test.go
@@ -15,7 +15,5 @@ func TestFmtSHCOut(t *testing.T) {
 }
 
 func TestPrintSHC(t *testing.T) {
-	if err := printSHC("whatever"); err != nil {
-		t.Errorf("error while printing to stderr: %q", err)
-	}
+	printSHC("whatever")
 }