Today I learned that bash has hashmaps (2024)
1–10 of 137 posts
Re: Today I learned that bash has hashmaps (2024)
#2Not only do they exist, but they have some fantastic foot guns! https://mywiki.wooledge.org/BashPitfalls#A.5B.5B_-v_hash.5B....
Re: Today I learned that bash has hashmaps (2024)
#3Not only do they exist, but they have some fantastic foot guns! https://mywiki.wooledge.org/BashPitfalls#A.5B.5B_-v_hash.5B....
Interesting, definitely need to keep that in mind.
Re: Today I learned that bash has hashmaps (2024)
#4A couple of weeks ago I learnt that Bash on Mac does not have associative arrays. We worked around the issue by changing the script to run under Zsh, but beware.
Re: Today I learned that bash has hashmaps (2024)
#5A couple of weeks ago I learnt that Bash on Mac does not have associative arrays. We worked around the issue by changing the script to run under Zsh, but beware.
Sounds like a bash 3 issue.
$ bash --version
GNU bash, version 5.2.32(1)-release (aarch64-apple-darwin23.4.0)
$ declare -A aaa; aaa[a]=a; aaa[b]=bb; for i in ${!aaa[@]}; do echo "$i --> ${aaa[$i]}"; done
b --> bb
a --> a
Re: Today I learned that bash has hashmaps (2024)
#6A couple of weeks ago I learnt that Bash on Mac does not have associative arrays. We worked around the issue by changing the script to run under Zsh, but beware.
You should be getting bash from homebrew anyways.
Re: Today I learned that bash has hashmaps (2024)
#7> Q: How do I declare a Hashmap?
> A: You use the command `declare -A HASHMAP_NAME`
This is why I think Bash is a horrible language
Re: Today I learned that bash has hashmaps (2024)
#8> Q: How do I declare a Hashmap? > A: You use the command `declare -A HASHMAP_NAME` This is why I think Bash is a horrible language
Because of the -A instead of an -H? -A is for "Associative array".
Re: Today I learned that bash has hashmaps (2024)
#9Not only do they exist, but they have some fantastic foot guns! https://mywiki.wooledge.org/BashPitfalls#A.5B.5B_-v_hash.5B....
>they have some fantastic foot guns!
Otherwise wouldn't be getting the full shell experience.
Re: Today I learned that bash has hashmaps (2024)
#10A couple of weeks ago I learnt that Bash on Mac does not have associative arrays. We worked around the issue by changing the script to run under Zsh, but beware.
Sounds like a bash 3 issue. $ bash --version GNU bash, version 5.2.32(1)-release (aarch64-apple-darwin23.4.0) $ declare -A aaa; aaa[a]=a; aaa[b]=bb; for i in ${!aaa[@]}; do echo "$i --> ${aaa[$i]}"; done b --> bb a --> a
To elaborate on this, macOS default bash is still stuck (assuming due to licensing) in v3.2.x (released in 2007). Bash got associative arrays in v4 (released in 2009).