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Portable shell code to print alternative text
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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}
Playing on a question for codegolf.se I am out of ideas. Is there some other approach (reasonably short, of course) that I haven't tried?
Given i contains either heads or tails, correspondingly output 1 or -1.
Alternatives tried:
<<<$[#i%7-5] # 12 bytes but only zsh.
Try It Online!
<<<$[30#$i%7-1] # 15 bytes but only zsh.
Try It Online!
echo $[30#$i%7-1] # 17 bytes but only in bash, zsh.
Try It Online!
echo $((30#$i%7-1)) # 19 bytes but only bash,ksh,zsh.
Try It Online!
he=2;echo $[${i%a*}-1] # 22 bytes But only in bash,zsh.
Try It Online!
a=${i%h*};echo ${a:+-}1 # 23 bytes. best portable code
Try It Online!
he=2;echo $((${i%a*}-1)) # 24 bytes, portable.
Try It Online!
(IFS=h;set $i;echo ${1:+-}1) # 28 (subshell) or 26 (changing IFS).
Try It Online!
(IFS=h;set $i;echo $(($#*2-3))) # 31 bytes, portable.
Try It Online!
Note: Using dash as a reasonable simile of a portable shell tester.
shell-script shell
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
asked 2 days ago
IsaacIsaac
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add a comment |
Playing on a question for codegolf.se I am out of ideas. Is there some other approach (reasonably short, of course) that I haven't tried?
Given i contains either heads or tails, correspondingly output 1 or -1.
Alternatives tried:
<<<$[#i%7-5] # 12 bytes but only zsh.
Try It Online!
<<<$[30#$i%7-1] # 15 bytes but only zsh.
Try It Online!
echo $[30#$i%7-1] # 17 bytes but only in bash, zsh.
Try It Online!
echo $((30#$i%7-1)) # 19 bytes but only bash,ksh,zsh.
Try It Online!
he=2;echo $[${i%a*}-1] # 22 bytes But only in bash,zsh.
Try It Online!
a=${i%h*};echo ${a:+-}1 # 23 bytes. best portable code
Try It Online!
he=2;echo $((${i%a*}-1)) # 24 bytes, portable.
Try It Online!
(IFS=h;set $i;echo ${1:+-}1) # 28 (subshell) or 26 (changing IFS).
Try It Online!
(IFS=h;set $i;echo $(($#*2-3))) # 31 bytes, portable.
Try It Online!
Note: Using dash as a reasonable simile of a portable shell tester.
shell-script shell
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
There'sexpr $i : he - 1
– Stéphane Chazelas
yesterday
@StéphaneChazelas Good one! Thanks.
– Isaac
yesterday
add a comment |
Playing on a question for codegolf.se I am out of ideas. Is there some other approach (reasonably short, of course) that I haven't tried?
Given i contains either heads or tails, correspondingly output 1 or -1.
Alternatives tried:
<<<$[#i%7-5] # 12 bytes but only zsh.
Try It Online!
<<<$[30#$i%7-1] # 15 bytes but only zsh.
Try It Online!
echo $[30#$i%7-1] # 17 bytes but only in bash, zsh.
Try It Online!
echo $((30#$i%7-1)) # 19 bytes but only bash,ksh,zsh.
Try It Online!
he=2;echo $[${i%a*}-1] # 22 bytes But only in bash,zsh.
Try It Online!
a=${i%h*};echo ${a:+-}1 # 23 bytes. best portable code
Try It Online!
he=2;echo $((${i%a*}-1)) # 24 bytes, portable.
Try It Online!
(IFS=h;set $i;echo ${1:+-}1) # 28 (subshell) or 26 (changing IFS).
Try It Online!
(IFS=h;set $i;echo $(($#*2-3))) # 31 bytes, portable.
Try It Online!
Note: Using dash as a reasonable simile of a portable shell tester.
shell-script shell
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
Playing on a question for codegolf.se I am out of ideas. Is there some other approach (reasonably short, of course) that I haven't tried?
Given i contains either heads or tails, correspondingly output 1 or -1.
Alternatives tried:
<<<$[#i%7-5] # 12 bytes but only zsh.
Try It Online!
<<<$[30#$i%7-1] # 15 bytes but only zsh.
Try It Online!
echo $[30#$i%7-1] # 17 bytes but only in bash, zsh.
Try It Online!
echo $((30#$i%7-1)) # 19 bytes but only bash,ksh,zsh.
Try It Online!
he=2;echo $[${i%a*}-1] # 22 bytes But only in bash,zsh.
Try It Online!
a=${i%h*};echo ${a:+-}1 # 23 bytes. best portable code
Try It Online!
he=2;echo $((${i%a*}-1)) # 24 bytes, portable.
Try It Online!
(IFS=h;set $i;echo ${1:+-}1) # 28 (subshell) or 26 (changing IFS).
Try It Online!
(IFS=h;set $i;echo $(($#*2-3))) # 31 bytes, portable.
Try It Online!
Note: Using dash as a reasonable simile of a portable shell tester.
shell-script shell
shell-script shell
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
edited 2 days ago
muru
43.8k5 gold badges110 silver badges181 bronze badges
43.8k5 gold badges110 silver badges181 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
asked 2 days ago
IsaacIsaac
14.4k1 gold badge23 silver badges61 bronze badges
14.4k1 gold badge23 silver badges61 bronze badges
There'sexpr $i : he - 1
– Stéphane Chazelas
yesterday
@StéphaneChazelas Good one! Thanks.
– Isaac
yesterday
add a comment |
There'sexpr $i : he - 1
– Stéphane Chazelas
yesterday
@StéphaneChazelas Good one! Thanks.
– Isaac
yesterday
There's
expr $i : he - 1– Stéphane Chazelas
yesterday
There's
expr $i : he - 1– Stéphane Chazelas
yesterday
@StéphaneChazelas Good one! Thanks.
– Isaac
yesterday
@StéphaneChazelas Good one! Thanks.
– Isaac
yesterday
add a comment |
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There's
expr $i : he - 1– Stéphane Chazelas
yesterday
@StéphaneChazelas Good one! Thanks.
– Isaac
yesterday