Tektronix Keithley SourceMeter 2470 Reference Manual

2470
High Voltage SourceMeter Instrument Reference Manual Section 13:
Introduction to TSP commands
2470-901-01 Rev. A / May 2019 13-29
String library functions
Function Description
string.byte(s)
string.byte(s, i)
string.byte(
s
,
i
,
j
)
Returns the internal numeric codes of the characters s[i],
s[i+1], ···, s[j]. The default value for i is 1; the default
value for
j
is
i
.
string.char(···)
Receives zero or more integers separated by commas. Returns a
string with length equal to the number of arguments, in which each
character has the internal numeric code equal to its corresponding
argument.
string.format(
formatstring, ...)
Returns a formatted version of its variable number of arguments
following the description given in its first argument, which must be
a string. The format string follows the same rules as the printf
family of standard C functions. The only differences are that the
modifiers *, l, L, n, p, and h are not supported and there is an
extra option, q. The q option formats a string in a form suitable to
be safely read back by the Lua interpreter; the string is written
between double quotes, and all double quotes, newlines,
embedded zeros, and backslashes in the string are correctly
escaped when written.
For example, the call:
string.format('%q', 'a string with "quotes" and \
n
new line')
will produce the string:
"a string with \"quotes\" and \
new line"
The options c, d, E, e, f, g, G, i, o, u, X, and x all expect a number
as argument. q and s expect a string. This function does not
accept string values containing embedded zeros, except as
arguments to the q option.
string.len(s)
Receives a string and returns its length. The empty string "" has
length 0. Embedded zeros are counted, so "a\000bc\000" has
length
5
.
string.lower(s)
Receives a string and returns a copy of this string with all
uppercase letters changed to lowercase. All other characters are
left unchanged.
string.rep(s, n)
Returns a string that is the concatenation of n copies of the
string
s
.
string.sub(s, i)
string.sub(s, i, j)
Returns the substring of s that starts at i and continues until j; i
and j can be negative. If j is absent, it is assumed to be equal
to -1 (which is the same as the string length). In particular, the call
string.sub(s, 1, j) returns a prefix of s with length j, and
string.sub(s, -i) returns a suffix of s with length i.
string.upper(s)
Receives a string and returns a copy of this string with all
lowercase letters changed to uppercase. All other characters are
left unchanged.

Tektronix Keithley SourceMeter 2470 Specifications

General

Brand	Tektronix
Model	Keithley SourceMeter 2470
Category	Measuring Instruments
Language	English