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ASIC
Reference Manual 5.Standard Functions
5-14 TPS1100-Version 1.30
5.4.5 Left$ - Left substring
Left$(S,N)
yields the substring consisting of the first
N
characters of the string
expression
S
.
N
must be an expression of type
Integer
. The result is of type
string * N
.
Example:
Left$ ("Railwaytrack", 4) -> "Rail"
5.4.6 Right$ - Right substring
Right$(S,N)
yields the substring consisting of the last
N
characters of the
string expression
S
.
N
must be an expression of type
Integer
. The result is of
type
string * N
.
Example:
Right$ ("Railwaytrack", 5) -> "track"
5.4.7 Mid$ - Substring anywhere
Mid$(S,K,N)
yields the substring consisting of
N
characters of the string
expression
S
, starting at the
K
-th character.
K
and
N
must be expressions of type
Integer
. The length of the resulting string is
N
. If parameter
N
is omitted, the
substring runs to the end of
S
.
Examples:
Mid$ ("Railwaytrack", 5, 3) -> "way"
Mid$ ("Railwaytrack", 9) -> "rack"
Mid$
can also be used to assign a character or a substring to another string at a
certain place. With
Mid$(S,K,N) = T
single characters of a string can be set
or replaced. If the length of T is higher than N , only the first N characters of T
are set in
S
. Is parameter
N
omitted, the whole substring
T
will be inserted in
S
(if the length of
S
this allows).