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Update 'when' statements.

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David Schmenk 2014-07-04 20:20:06 -07:00
parent 33ef3f86a1
commit bddcd41327
1 changed files with 6 additions and 0 deletions
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Docs/Tutorials/PLASMA/User Manual.md
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@ -403,13 +403,16 @@ The complex test case is handled with `when`. Basically a `if`, `elsifF`, `else`
when key when key
is 'A' is 'A'
; handle A character ; handle A character
break
is 'B' is 'B'
; handle B character ; handle B character
break
``` ```
... ...
``` ```
is 'Z' is 'Z'
; handle Z character ; handle Z character
break
otherwise otherwise
; Not a known key ; Not a known key
wend wend
@ -424,12 +427,15 @@ byte a
when TRUE when TRUE
is (a <= 10) is (a <= 10)
; 10 or less ; 10 or less
break
is (a > 10) AND (a < 20) is (a > 10) AND (a < 20)
; between 10 and 20 ; between 10 and 20
break
is (a >= 20) is (a >= 20)
; 20 or greater ; 20 or greater
wend wend
``` ```
A `when` clause can fall-through to the following clause, just like C `switch` statements by leaving out the `break` at the end of a clause.
##### FOR \<TO,DOWNTO\> [STEP]/NEXT ##### FOR \<TO,DOWNTO\> [STEP]/NEXT
Iteration over a range is handled with the `for`/`next` loop. When iterating from a smaller to larger value, the `to` construct is used; when iterating from larger to smaller, the `downto` construct is used. Iteration over a range is handled with the `for`/`next` loop. When iterating from a smaller to larger value, the `to` construct is used; when iterating from larger to smaller, the `downto` construct is used.