ASCII control characters: Difference between revisions
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'\x7f': ASCII/Unicode U+007F (category Cc: Other, control)
</syntaxhighlight>
An enum can be used for the task:
<syntaxhighlight lang="julia">@enum Control begin
nul = 0
soh = 1
stx = 2
etx = 3
eot = 4
enq = 5
ack = 6
bel = 7
bs = 8
ht = 9
lf = 10
vt = 11
ff = 12
cr = 13
so = 14
si = 15
dle = 16
dc1 = 17
dc2 = 18
dc3 = 19
dc4 = 20
nak = 21
syn = 22
etb = 23
can = 24
em = 25
sub = 26
esc = 27
fs = 28
gs = 29
rs = 30
us = 31
del = 127
end
@show nul, ht, us, del
</syntaxhighlight>
A named tuple is a another way to reference such control Chars by name:
<syntaxhighlight lang="julia">const CNTRL = (
nul = 0,
soh = 1,
stx = 2,
etx = 3,
eot = 4,
enq = 5,
ack = 6,
bel = 7,
bs = 8,
ht = 9,
lf = 10,
vt = 11,
ff = 12,
cr = 13,
so = 14,
si = 15,
dle = 16,
dc1 = 17,
dc2 = 18,
dc3 = 19,
dc4 = 20,
nak = 21,
syn = 22,
etb = 23,
can = 24,
em = 25,
sub = 26,
esc = 27,
fs = 28,
gs = 29,
rs = 30,
us = 31,
del = 127,
)
@show CNTRL.nul, CNTRL.ht, CNTRL.us, CNTRL.del
</syntaxhighlight>{{out}}
<pre>
(nul, ht, us, del) = (nul, ht, us, del)
(CNTRL.nul, CNTRL.ht, CNTRL.us, CNTRL.del) = (0, 9, 31, 127)
</pre>
=={{header|Perl}}==
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