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Klik op het logo voor hulp op afstand
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JoPPS-Script provides all standard operators that you would expect in a development environment:
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Arithmetic operators
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Example (b := 10, c := 3)
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+
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addition
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a := b + c
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13
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-
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subtraction
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a := b - c
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7
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*
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multiplication
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a := b * c
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30
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/
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division
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a := b / c
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3.33333333333333
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//
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integer division (DIV)
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a := b // c
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3
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\
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modulo
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a := b \ c
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1
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\\
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integer modulo
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a := b \\ c
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1
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**
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power
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a := b ** c
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1000
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&&
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logical and
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a := b && c
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TRUE
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&
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bitwise and
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a := b & c
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2
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||
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logical or
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a := b || c
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TRUE
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bitwise or
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a := b | c
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11
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^^
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logical xor
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a := b ^^ c
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FALSE
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^
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bitwise xor
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a := b ^ c
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9
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=
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equality
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a := b = c
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FALSE
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<> or !=
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inequality
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a := b <> c
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TRUE
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!
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logical negation
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a := !(b = c)
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TRUE
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~
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bitwise negation
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a := ~(b = c)
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-1
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>
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greater than
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a := b > c
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TRUE
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<
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less than
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a := b < c
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FALSE
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<=
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less than or equal to
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a := b <= c
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FALSE
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>=
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greater than or equal to
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a := b >= c
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TRUE
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String operators
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Example (e := "JoPPS-Script is ", f :="great")
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+
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concatenation
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d := e + f
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"JoPPS-Script is great"
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=
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equality
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d := e = f
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FALSE
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<>or !=
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negation
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d := e <> f
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TRUE
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>
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greater than
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d := e > f
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FALSE
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<
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less than
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d := e < f
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TRUE
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<=
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less than or equal to
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d := e <= f
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TRUE
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>=
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greater than or equal to
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d := e >= f
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FALSE
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Binary operators operate on two operands, unary operators operate on only one operand.
- The + and - operators can be used as binary or as unary operator.
- The ! (negation) and the ~ (bitwise negation) operator are strict unary operators.
Bitwise operations are always performed 32-bit, results are threated as signed 32-bit integers.
Predefined language constants
You can use the following constants in expressions in JoPPS, JScripter or JCALL :
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Constant
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Value
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TRUE
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1 or logical true, note that all numeric values <> 0 are actually TRUE
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FALSE
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0 or logical false
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CRLF
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String representing a CR/LF pair. (ascii characters 13 and 10)
Can be used to write textlines to a DOS ascii file.
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NIL
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Represents the value of a non-allocated object variable.
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Note: constants specific to JoPPS itself are discussed in section Function reference.
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History
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