Minor

JL.Core.Tests/Deconjugation/DeconjugatorTests.cs

@@ -27,7 +27,7 @@ public void Deconjugate_わからない()
         bool success = false;
         foreach (Form form in result)
         {
-            if (form.Text is expectedText && form.Process.FirstOrDefault() is expectedProcess)
+            if (form.Text is expectedText && form.Process.Count > 0 && form.Process[0] is expectedProcess)
             {
                 success = true;
                 break;

JL.Core/Dicts/CustomWordDict/CustomWordRecord.cs

@@ -235,4 +235,7 @@ public override int GetHashCode()
             return hash;
         }
     }
+
+    public static bool operator ==(CustomWordRecord? left, CustomWordRecord? right) => left is not null ? left.Equals(right) : right is null;
+    public static bool operator !=(CustomWordRecord? left, CustomWordRecord? right) => left is not null ? !left.Equals(right) : right is not null;
 }

JL.Core/Dicts/EPWING/Nazeka/EpwingNazekaRecord.cs

@@ -147,4 +147,7 @@ public override int GetHashCode()
             return hash;
         }
     }
+
+    public static bool operator ==(EpwingNazekaRecord? left, EpwingNazekaRecord? right) => left is not null ? left.Equals(right) : right is null;
+    public static bool operator !=(EpwingNazekaRecord? left, EpwingNazekaRecord? right) => left is not null ? !left.Equals(right) : right is not null;
 }

JL.Core/Dicts/EPWING/Yomichan/EpwingYomichanRecord.cs

@@ -166,4 +166,7 @@ public override int GetHashCode()
             return hash;
         }
     }
+
+    public static bool operator ==(EpwingYomichanRecord? left, EpwingYomichanRecord? right) => left is not null ? left.Equals(right) : right is null;
+    public static bool operator !=(EpwingYomichanRecord? left, EpwingYomichanRecord? right) => left is not null ? !left.Equals(right) : right is not null;
 }

JL.Core/Dicts/JMdict/JmdictRecord.cs

@@ -338,4 +338,7 @@ public override int GetHashCode()
             return Id * PrimarySpelling.GetHashCode(StringComparison.Ordinal);
         }
     }
+
+    public static bool operator ==(JmdictRecord? left, JmdictRecord? right) => left is not null ? left.Equals(right) : right is null;
+    public static bool operator !=(JmdictRecord? left, JmdictRecord? right) => left is not null ? !left.Equals(right) : right is not null;
 }

JL.Core/Dicts/JMnedict/JmnedictRecord.cs

@@ -107,4 +107,7 @@ public override int GetHashCode()
             return Id * PrimarySpelling.GetHashCode(StringComparison.Ordinal);
         }
     }
+
+    public static bool operator ==(JmnedictRecord? left, JmnedictRecord? right) => left is not null ? left.Equals(right) : right is null;
+    public static bool operator !=(JmnedictRecord? left, JmnedictRecord? right) => left is not null ? !left.Equals(right) : right is not null;
 }

JL.Core/Dicts/KanjiDict/YomichanKanjiRecord.cs

@@ -200,4 +200,7 @@ public override int GetHashCode()
             return hash;
         }
     }
+
+    public static bool operator ==(YomichanKanjiRecord left, YomichanKanjiRecord right) => left.Equals(right);
+    public static bool operator !=(YomichanKanjiRecord left, YomichanKanjiRecord right) => !left.Equals(right);
 }

JL.Core/Dicts/PitchAccent/PitchAccentRecord.cs

@@ -72,4 +72,7 @@ public override int GetHashCode()
     {
         return HashCode.Combine(Spelling, Reading);
     }
+
+    public static bool operator ==(PitchAccentRecord left, PitchAccentRecord right) => left.Equals(right);
+    public static bool operator !=(PitchAccentRecord left, PitchAccentRecord right) => !left.Equals(right);
 }

JL.Core/WordClass/JmdictWordClass.cs

@@ -53,4 +53,7 @@ public override int GetHashCode()
             return hash;
         }
     }
+
+    public static bool operator ==(JmdictWordClass? left, JmdictWordClass? right) => left is not null ? left.Equals(right) : right is null;
+    public static bool operator !=(JmdictWordClass? left, JmdictWordClass? right) => left is not null ? !left.Equals(right) : right is not null;
 }