Programming Gambas from Zip/Operators

Operators

Arithmetic

http://Gambaswiki.org/wiki/lang/arithop by example:

- 6 x = - x	Unary minus Changes number to a negative	5 / 2 = 2.5	Divide
3 + 2 = 5	Add	3 ^ 2 = 9	Power of
7 – 4 = 3	Subtract	13 \ 2 = 6 13 DIV 2 = 6	Integer division
5 * 2 = 10	Multiply	12 % 7 = 5 12 MOD 7 = 5	Remainder after dividing

Boolean

Two things combined, or one thing operated on	Overall Value	Examples
SomethingTrue AND SomethingTrue	True	(1=1) AND (2=2) is TRUE (1<2) AND (5>4) is TRUE Both have to be true to make the whole thing true.
SomethingTrue AND SomethingFalse	False	(1=1) AND (2=3) is FALSE (6>5) AND (4<3) is FALSE
SomethingFalse AND SomethingTrue	False	(5=6) AND (4=4) is FALSE
SomethingFalse AND SomethingFalse	False	(5=6) AND (2=3) is FALSE
NOT SomethingTrue	False	NOT (8=8) is FALSE NOT (1 > -1) is FALSE “Not” means “the opposite of”
NOT SomethingFalse	True	NOT (1=2) is TRUE NOT ("apple" > "banana") is TRUE i.e., the reverse of (a comes after b)
SomethingTrue OR SomethingTrue	True	(1=1) OR (2=2) is TRUE Either one being true will make the whole thing true.
SomethingTrue OR SomethingFalse	True	(1=1) OR (2=3) is TRUE
SomethingFalse OR SomethingTrue	True	(7=3) OR (3=3) is TRUE
SomethingFalse OR SomethingFalse	False	(1=1) OR (2=3) is FALSE
SomethingTrue XOR SomethingTrue	False	(1=1) XOR (4=4) is FALSE
SomethingTrue XOR SomethingFalse	True	(1=1) XOR (4=5) is TRUE
SomethingFalse XOR SomethingTrue	True	(1=5) XOR (4=4) is TRUE
SomethingFalse XOR SomethingFalse	False	(1=2) XOR (4=5) is FALSE

AND = both

OR = either

XOR = either, but not both (“exclusive OR”)

String Operators

Joining (Concatenation)
String & String	Concatenates two strings.
String &/ String	Concatenate two strings that contain file names. Add a path separator between the two strings if necessary. An example of a path is /home/gerard/Documents/Gambas/ How to get it: User.Home &/ "Documents" &/ "Gambas/"
Comparison
String = String	Returns if two strings are equal.
String == String	Case-insensitive comparison Returns if two strings are equal, regardless of upper or lower case
String LIKE String	Checks if a string matches a pattern. Is the first string like the second? There are special codes for the pattern string. Refer to the wiki for more codes, http://Gambaswiki.org/wiki/lang/like * means any character or string of characters "Gambas" Like "G*" means “Does Gambas begin with a G?” ? means any single character; [ ] means either/or the things in brackets: "Gambas" Like "?[Aa]*" means “Does Gambas have a capital or small A as its second letter?” "Gambas" Like "G[^Aa]*" means “Does Gambas not have a capital or small A as its second letter?” Dim Fruit As String = "pear" Label1.text = Fruit Like "{apple,pear,lemon}" shows True, but Label1.text = Fruit Like "{apple, pear, lemon}" shows False because spaces matter.
String MATCH String	Checks if a string matches a PCRE regular expression. Refer to http://Gambaswiki.org/wiki/doc/pcre PCRE means Perl Compatible Regular Expressions Regular expressions are the ultimate in finding things in strings.
String BEGINS String	Checks if a string begins a certain way "Gerard" Begins "G" means “Does Gerard begin with a G?”
String ENDS String	Checks if a string ends a certain way "Benôit" Ends "t" means “Does Benôit end with a t?”
String <> String	Does not equal, or “is not the same as”
String1 < String2	Does string1 come alphabetically before string2?
String1 > String2	Does string1 come alphabetically after string2?
String1 <= String2	Does string1 come alphabetically before, or is it the same as, string2?
String1 >= String2	Does string1 come alphabetically after, or is it the same as, string2?