Brace expansion using ranges: Difference between revisions
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* [[Range_expansion|range expansion]]
<br><br>
=={{header|11l}}==
{{trans|Nim}}
<lang 11l>F intFromString(s) -> Int?
X.try
R Int(s)
X.catch ValueError
R N
F parseRange(r)
I r.empty {R [‘{}’]}
V sp = r.split(‘..’)
I sp.len == 1 {R [‘{’r‘}’]}
V first = sp[0]
V last = sp[1]
V incr = I sp.len == 2 {‘1’} E sp[2]
Int? val1 = intFromString(first)
Int? val2 = intFromString(last)
Int? val3 = intFromString(incr)
I val3 == N {R [‘{’r‘}’]}
V n3 = val3
V numeric = val1 != N & val2 != N
Int n1
Int n2
I numeric
n1 = val1
n2 = val2
E
I (val1 != N & val2 == N) | (val1 == N & val2 != N)
R [‘{’r‘}’]
I first.len != 1 | last.len != 1
R [‘{’r‘}’]
n1 = first[0].code
n2 = last[0].code
V width = 1
I numeric
width = max(first.len, last.len)
I n3 == 0
R I numeric {[String(n1).zfill(width)]} E [first]
V asc = n1 < n2
I n3 < 0
asc = !asc
swap(&n1, &n2)
n3 = -n3
[String] result
V i = n1
I asc
L i <= n2
result.append(I numeric {String(i).zfill(width)} E Char(code' i))
i += n3
E
L i >= n2
result.append(I numeric {String(i).zfill(width)} E Char(code' i))
i -= n3
R result
F rangeExpand(s)
V result = [‘’]
V rng = ‘’
V inRng = 0B
L(c) s
I c == ‘{’ & !inRng
inRng = 1B
rng = ‘’
E I c == ‘}’ & inRng
V rngRes = parseRange(rng)
[String] res
L(r) result
L(rr) rngRes
res.append(r‘’rr)
result = move(res)
inRng = 0B
E I inRng
rng ‘’= c
E
L(&s) result
s ‘’= c
I inRng
L(&s) result
s ‘’= ‘{’rng
R result
-V examples = [‘simpleNumberRising{1..3}.txt’,
‘simpleAlphaDescending-{Z..X}.txt’,
‘steppedDownAndPadded-{10..00..5}.txt’,
‘minusSignFlipsSequence {030..20..-5}.txt’,
‘combined-{Q..P}{2..1}.txt’,
‘li{teral’,
‘rangeless{}empty’,
‘rangeless{random}string’,
‘mixedNumberAlpha{5..k}’,
‘steppedAlphaRising{P..Z..2}.txt’,
‘stops after endpoint-{02..10..3}.txt’]
L(s) examples
print(s" ->\n ", end' ‘’)
V res = rangeExpand(s)
print(res.join("\n "))
print()</lang>
{{out}}
<pre>
simpleNumberRising{1..3}.txt ->
simpleNumberRising1.txt
simpleNumberRising2.txt
simpleNumberRising3.txt
simpleAlphaDescending-{Z..X}.txt ->
simpleAlphaDescending-Z.txt
simpleAlphaDescending-Y.txt
simpleAlphaDescending-X.txt
steppedDownAndPadded-{10..00..5}.txt ->
steppedDownAndPadded-10.txt
steppedDownAndPadded-05.txt
steppedDownAndPadded-00.txt
minusSignFlipsSequence {030..20..-5}.txt ->
minusSignFlipsSequence 020.txt
minusSignFlipsSequence 025.txt
minusSignFlipsSequence 030.txt
combined-{Q..P}{2..1}.txt ->
combined-Q2.txt
combined-Q1.txt
combined-P2.txt
combined-P1.txt
li{teral ->
li{teral
rangeless{}empty ->
rangeless{}empty
rangeless{random}string ->
rangeless{random}string
mixedNumberAlpha{5..k} ->
mixedNumberAlpha{5..k}
steppedAlphaRising{P..Z..2}.txt ->
steppedAlphaRisingP.txt
steppedAlphaRisingR.txt
steppedAlphaRisingT.txt
steppedAlphaRisingV.txt
steppedAlphaRisingX.txt
steppedAlphaRisingZ.txt
stops after endpoint-{02..10..3}.txt ->
stops after endpoint-02.txt
stops after endpoint-05.txt
stops after endpoint-08.txt
</pre>
=={{header|Go}}==
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