Operators - Revision history

Marc Gurevitx: /* Comparison Operators */ Added chaining of ==/!=

2023-11-20T21:35:11Z

Comparison Operators: Added chaining of ==/!=

JoeStrout: added "Precedence" column

2023-11-20T19:45:05Z

added "Precedence" column

Marc Gurevitx: Removing space between - and A

2023-11-03T10:06:59Z

Removing space between - and A

Marc Gurevitx: Removing space between A and brackets

2023-11-03T10:05:04Z

Removing space between A and brackets

Marc Gurevitx: About tricky spaces

2023-11-03T09:31:56Z

About tricky spaces

Marc Gurevitx: /* Math-assignment operators */ Removing ambiguous "in-place"

2023-10-30T06:03:32Z

Math-assignment operators: Removing ambiguous "in-place"

Marc Gurevitx: + Math-assignment operators

2023-10-07T07:54:05Z

+ Math-assignment operators

Marc Gurevitx at 07:22, 7 October 2023

2023-10-07T07:22:05Z

Marc Gurevitx: +func call

2023-10-07T07:04:36Z

+func call

Marc Gurevitx: +indexing and slicing

2023-10-07T06:38:20Z

+indexing and slicing

@@ Line 75: / Line 75: @@
 === Comparison Operators ===
-In the case of comparison operators (<c>></c>, <c><</c>, <c>>=</c> and <c><=</c>), operands are compared in pairs from left to right.  All comparisons must be true for the complete chained expression to be considered true.  The most common use of this is to check whether a variable is in a certain range, with an expression like <c>0 < x < 10</c>, which is true only if <c>x</c> is between 0 and 10 (non-inclusive).
+In the case of comparison operators (<c>==</c>, <c>!=</c>, <c>></c>, <c><</c>, <c>>=</c> and <c><=</c>), operands are compared in pairs from left to right.  All comparisons must be true for the complete chained expression to be considered true.  The most common use of this is to check whether a variable is in a certain range, with an expression like <c>0 < x < 10</c>, which is true only if <c>x</c> is between 0 and 10 (non-inclusive).
 {| class="wikitable"
@@ Line 88: / Line 88: @@
 |-
 | <c>0 < x < 10 < y</c> || x = 5; y = 15 || true || x is between 0 and 10, and 10 is less than y
 |}

@@ Line 3: / Line 3: @@
 {| class="wikitable"
 |-
-! Operator !! Meaning
+! Operator !! Meaning !! Precedence
 |-
-| A <c>=</c> B || assignment
+| A <c>=</c> B || assignment || 0
 |-
-| A <c>or</c> B || logical OR: true if either operand is true
+| A <c>or</c> B || logical OR: true if either operand is true || 1
 |-
-| A <c>and</c> B || logical AND: true if both operands are true
+| A <c>and</c> B || logical AND: true if both operands are true || 2
 |-
-| <c>not</c> A || logical negation: true if its operand is false, and vice versa
+| <c>not</c> A || logical negation: true if its operand is false, and vice versa || 3
 |-
-| A <c>[[isa]]</c> B || type checking
+| A <c>[[isa]]</c> B || type checking || 4
 |-
-| A <c>==</c> B || equality comparison: true if operands are equal
+| A <c>==</c> B || equality comparison: true if operands are equal || 5
 |-
-| A <c>!=</c> B || inequality comparison: true if operands are not equal
+| A <c>!=</c> B || inequality comparison: true if operands are not equal || 5
 |-
-| A <c>></c> B || greater-than comparison
+| A <c>></c> B || greater-than comparison || 5
 |-
-| A <c><</c> B || less-than comparison
+| A <c><</c> B || less-than comparison || 5
 |-
-| A <c>>=</c> B || greater-than or equal-to comparison
+| A <c>>=</c> B || greater-than or equal-to comparison || 5
 |-
-| A <c><=</c> B || less-than or equal-to comparison
+| A <c><=</c> B || less-than or equal-to comparison || 5
 |-
-| A <c>+</c> B || addition or concatenation
+| A <c>+</c> B || addition or concatenation || 6
 |-
-| A <c>-</c> B || subtraction or string trimming
+| A <c>-</c> B || subtraction or string trimming || 6
 |-
-| A <c>*</c> B || multiplication or replication
+| A <c>/</c> B || division or reduction || 7
 |-
-| A <c>/</c> B || division or reduction
+| A <c>%</c> B || modulo (remainder) || 7
 |-
-| A <c>%</c> B || modulo (remainder)
+| <c>-A</c> || unary minus (numeric negation) || 8
 |-
-| <c>-A</c> || unary minus (numeric negation)
+| <c>[[new]]</c> A || instantiation || 9
 |-
-| <c>[[new]]</c> A || instantiation
+| <c>@</c>A || [[@ operator|address-of]] (reference function without invoking it) || 10
 |-
-| <c>@</c>A || [[@ operator|address-of]] (reference function without invoking it)
+| A <c>^</c> B || power: A raised to the power of B || 11
 |-
-| A <c>^</c> B || power: A raised to the power of B
+| <c>A[</c>B<c>]</c> || indexing || 12
 |-
-| <c>A[</c>B<c>]</c> || indexing
+| <c>A[</c>B<c>:</c>C<c>]</c> || slicing || 12
 |-
-| <c>A[</c>B<c>:</c>C<c>]</c> || slicing
+| <c>A(</c>B, C...<c>)</c> || [[Function#Calling_a_Function | calling a function]] || 12
 |-
-| <c>A(</c>B, C...<c>)</c> || [[Function#Calling_a_Function | calling a function]]
+| A<c>.</c>B || [[Dot syntax|dot operator]] || 12
 |}

@@ Line 37: / Line 37: @@
 | A <c>%</c> B || modulo (remainder)
 |-
-| <c>-</c>A || unary minus (numeric negation)
+| <c>-A</c> || unary minus (numeric negation)
 |-
 | <c>[[new]]</c> A || instantiation

@@ Line 45: / Line 45: @@
 | A <c>^</c> B || power: A raised to the power of B
 |-
-| A<c>[</c>B<c>]</c> || indexing
+| <c>A[</c>B<c>]</c> || indexing
 |-
-| A<c>[</c>B<c>:</c>C<c>]</c> || slicing
+| <c>A[</c>B<c>:</c>C<c>]</c> || slicing
 |-
-| A<c>(</c>B, C...<c>)</c> || [[Function#Calling_a_Function | calling a function]]
+| <c>A(</c>B, C...<c>)</c> || [[Function#Calling_a_Function | calling a function]]
 |-
 | A<c>.</c>B || [[Dot syntax|dot operator]]

@@ Line 133: / Line 133: @@
 | A <c>^=</c> B || A = A ^ B
 |}
 [[Category:Language]]

@@ Line 105: / Line 105: @@
 == Math-assignment operators ==
-In version ''1.6'' the math-assignment operators were added. They perform an operation in-place on a variable provided as first operand. They overwrite the value of the first operand variable with the result of the operation when performing the operator without assignment.
+In version ''1.6'' the math-assignment operators were added. They overwrite the value of the first operand variable with the result of the operation when performing the operator without assignment.
 <ms>

← Older revision		Revision as of 07:54, 7 October 2023
Line 102:		Line 102:

	This can continue for an arbitrarily long chain of dot operators.		This can continue for an arbitrarily long chain of dot operators.
		+
		+	== Math-assignment operators ==
		+
		+	In version ''1.6'' the math-assignment operators were added. They perform an operation in-place on a variable provided as first operand. They overwrite the value of the first operand variable with the result of the operation when performing the operator without assignment.
		+
		+	<ms>
		+	x = 42
		+	x += 13 // x = x + 13
		+	print x // 55
		+
		+	s = "hello.ms"
		+	s -= ".ms" // s = s - ".ms"
		+	print s // "hello"
		+	</ms>
		+
		+	{\| class="wikitable"
		+	\|-
		+	! Operator !! Meaning
		+	\|-
		+	\| A <c>+=</c> B \|\| A = A + B
		+	\|-
		+	\| A <c>-=</c> B \|\| A = A - B
		+	\|-
		+	\| A <c>=</c> B \|\| A = A B
		+	\|-
		+	\| A <c>/=</c> B \|\| A = A / B
		+	\|-
		+	\| A <c>%=</c> B \|\| A = A % B
		+	\|-
		+	\| A <c>^=</c> B \|\| A = A ^ B
		+	\|}

	[[Category:Language]]		[[Category:Language]]

@@ Line 48: / Line 48: @@
 |-
 | A<c>[</c>B<c>:</c>C<c>]</c> || [[Slice | slicing]]
 |-
 | A<c>.</c>B || [[Dot syntax|dot operator]]