cleanup from PR#1216 review

Author: Alex-Jordan

lib/Value/Matrix.pm

@@ -417,9 +417,7 @@ sub isOne {
 		}
 	} else {
 		for my $row (@{ $self->{data} }) {
-			if (!$row->isOne) {
-				return 0;
-			}
+			return 0 unless $row->isOne;
 		}
 	}
 	return 1;
@@ -469,9 +467,7 @@ sub isUpperTriangular {
 		}
 	} else {
 		for my $row (@{ $self->{data} }) {
-			if (!$row->isUpperTriangular) {
-				return 0;
-			}
+			return 0 unless $row->isUpperTriangular;
 		}
 	}
 	return 1;
@@ -498,9 +494,7 @@ sub isLowerTriangular {
 		}
 	} else {
 		for my $row (@{ $self->{data} }) {
-			if (!$row->isLowerTriangular) {
-				return 0;
-			}
+			return 0 unless $row->isLowerTriangular;
 		}
 	}
 	return 1;
@@ -536,9 +530,7 @@ sub isSymmetric {
 		}
 	} else {
 		for my $row (@{ $self->{data} }) {
-			if (!$row->isSymmetric) {
-				return 0;
-			}
+			return 0 unless $row->isSymmetric;
 		}
 	}
 	return 1;
@@ -587,15 +579,13 @@ sub isREF {
 		}
 	} else {
 		for my $row (@{ $self->{data} }) {
-			if (!$row->isREF) {
-				return 0;
-			}
+			return 0 unless $row->isREF;
 		}
 	}
 	return 1;
 }
 
-=head3 C<isREF>
+=head3 C<isRREF>
 
 Check if a Matrix is in reduced row echelon form (for degree > 2, applies to frontal slice matrices)
 
@@ -630,9 +620,7 @@ sub isRREF {
 		}
 	} else {
 		for my $row (@{ $self->{data} }) {
-			if (!$row->isRREF) {
-				return 0;
-			}
+			return 0 unless $row->isREF;
 		}
 	}
 	return 1;