30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
'In Liberty BASIC variables are either string or numeric.
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'A variable name can start with any letter and it can contain both letters and numerals, as well as dots (for example: user.firstname).
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'There is no practical limit to the length of a variable name... up to ~2M characters.
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'The variable names are case sensitive.
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'assignments: -numeric variables. LB assumes integers unless assigned or calculated otherwise.
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'Because of its Smalltalk heritage, LB integers are of arbitrarily long precision.
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'They lose this if a calculation yields a non-integer, switching to floating point.
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i = 1
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r = 3.14
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'assignments -string variables. Any string-length, from zero to ~2M.
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t$ ="21:12:45"
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flag$ ="TRUE"
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'assignments -1D or 2D arrays
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'A default array size of 10 is available. Larger arrays need pre-'DIM'ming.
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height( 3) =1.87
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dim height( 50)
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height( 23) =123.5
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potential( 3, 5) =4.5
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name$( 4) ="John"
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'There are no Boolean /bit variables as such.
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'Arrays in a main program are global.
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'However variables used in the main program code are not visible inside functions and subroutines.
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'They can be declared 'global' if such visibility is desired.
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'Functions can receive variables by name or by reference.
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