How to correspond string to specific number and number to specific string
Lets say we have:
0:"APPLE"
1:"ORANGE"
2:"GRAPES"
- ...
Is there a structure in JavaScript that allows me to get "ORANGE" from 1 and 1 from "ORANGE"? I remembered there was such a thing (not Object or Array) but can't remember its name, and I couldn't figure out a way to Google it without already knowing what it's called :(
Unless what I'm remembering is from ruby, not JS? In which case what do you call this?
EDIT
I am aware that Object and Array can achieve the same result. At this point I just really want to know if there's a specific structure for it, and what its name is, because I thought I remembered seeing it somewhere, either in JS or ruby. Please tell me what it's called, or tell me it doesn't exist, so I can have an ease of mind again..
For JS, I don't think it is Map either, because the value -> key direction still needed a bit of work.
javascript
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
|
show 4 more comments
Lets say we have:
0:"APPLE"
1:"ORANGE"
2:"GRAPES"
- ...
Is there a structure in JavaScript that allows me to get "ORANGE" from 1 and 1 from "ORANGE"? I remembered there was such a thing (not Object or Array) but can't remember its name, and I couldn't figure out a way to Google it without already knowing what it's called :(
Unless what I'm remembering is from ruby, not JS? In which case what do you call this?
EDIT
I am aware that Object and Array can achieve the same result. At this point I just really want to know if there's a specific structure for it, and what its name is, because I thought I remembered seeing it somewhere, either in JS or ruby. Please tell me what it's called, or tell me it doesn't exist, so I can have an ease of mind again..
For JS, I don't think it is Map either, because the value -> key direction still needed a bit of work.
javascript
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
2
maybe you are looking forMap
– Nina Scholz
Nov 16 '18 at 10:10
You can easily do that with an object, though
– CertainPerformance
Nov 16 '18 at 10:14
@CertainPerformance Anyway getting key from value would require some loop, though
– hindmost
Nov 16 '18 at 10:17
1
Possible duplicate of How can I create a two-way mapping in JavaScript, or some other way to swap out values?
– Jeto
Nov 16 '18 at 10:17
@hindmost It's trivial though, and so would aMap, right?
– CertainPerformance
Nov 16 '18 at 10:18
|
show 4 more comments
Lets say we have:
0:"APPLE"
1:"ORANGE"
2:"GRAPES"
- ...
Is there a structure in JavaScript that allows me to get "ORANGE" from 1 and 1 from "ORANGE"? I remembered there was such a thing (not Object or Array) but can't remember its name, and I couldn't figure out a way to Google it without already knowing what it's called :(
Unless what I'm remembering is from ruby, not JS? In which case what do you call this?
EDIT
I am aware that Object and Array can achieve the same result. At this point I just really want to know if there's a specific structure for it, and what its name is, because I thought I remembered seeing it somewhere, either in JS or ruby. Please tell me what it's called, or tell me it doesn't exist, so I can have an ease of mind again..
For JS, I don't think it is Map either, because the value -> key direction still needed a bit of work.
javascript
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
Lets say we have:
0:"APPLE"
1:"ORANGE"
2:"GRAPES"
- ...
Is there a structure in JavaScript that allows me to get "ORANGE" from 1 and 1 from "ORANGE"? I remembered there was such a thing (not Object or Array) but can't remember its name, and I couldn't figure out a way to Google it without already knowing what it's called :(
Unless what I'm remembering is from ruby, not JS? In which case what do you call this?
EDIT
I am aware that Object and Array can achieve the same result. At this point I just really want to know if there's a specific structure for it, and what its name is, because I thought I remembered seeing it somewhere, either in JS or ruby. Please tell me what it's called, or tell me it doesn't exist, so I can have an ease of mind again..
For JS, I don't think it is Map either, because the value -> key direction still needed a bit of work.
javascript
javascript
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
edited Nov 16 '18 at 10:58
Stefan
77.4k895148
77.4k895148
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
asked Nov 16 '18 at 10:09
Lucia LuLucia Lu
8,52752839
8,52752839
2
maybe you are looking forMap
– Nina Scholz
Nov 16 '18 at 10:10
You can easily do that with an object, though
– CertainPerformance
Nov 16 '18 at 10:14
@CertainPerformance Anyway getting key from value would require some loop, though
– hindmost
Nov 16 '18 at 10:17
1
Possible duplicate of How can I create a two-way mapping in JavaScript, or some other way to swap out values?
– Jeto
Nov 16 '18 at 10:17
@hindmost It's trivial though, and so would aMap, right?
– CertainPerformance
Nov 16 '18 at 10:18
|
show 4 more comments
2
maybe you are looking forMap
– Nina Scholz
Nov 16 '18 at 10:10
You can easily do that with an object, though
– CertainPerformance
Nov 16 '18 at 10:14
@CertainPerformance Anyway getting key from value would require some loop, though
– hindmost
Nov 16 '18 at 10:17
1
Possible duplicate of How can I create a two-way mapping in JavaScript, or some other way to swap out values?
– Jeto
Nov 16 '18 at 10:17
@hindmost It's trivial though, and so would aMap, right?
– CertainPerformance
Nov 16 '18 at 10:18
2
2
maybe you are looking for
Map– Nina Scholz
Nov 16 '18 at 10:10
maybe you are looking for
Map– Nina Scholz
Nov 16 '18 at 10:10
You can easily do that with an object, though
– CertainPerformance
Nov 16 '18 at 10:14
You can easily do that with an object, though
– CertainPerformance
Nov 16 '18 at 10:14
@CertainPerformance Anyway getting key from value would require some loop, though
– hindmost
Nov 16 '18 at 10:17
@CertainPerformance Anyway getting key from value would require some loop, though
– hindmost
Nov 16 '18 at 10:17
1
1
Possible duplicate of How can I create a two-way mapping in JavaScript, or some other way to swap out values?
– Jeto
Nov 16 '18 at 10:17
Possible duplicate of How can I create a two-way mapping in JavaScript, or some other way to swap out values?
– Jeto
Nov 16 '18 at 10:17
@hindmost It's trivial though, and so would a
Map, right?– CertainPerformance
Nov 16 '18 at 10:18
@hindmost It's trivial though, and so would a
Map, right?– CertainPerformance
Nov 16 '18 at 10:18
|
show 4 more comments
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2
maybe you are looking for
Map– Nina Scholz
Nov 16 '18 at 10:10
You can easily do that with an object, though
– CertainPerformance
Nov 16 '18 at 10:14
@CertainPerformance Anyway getting key from value would require some loop, though
– hindmost
Nov 16 '18 at 10:17
1
Possible duplicate of How can I create a two-way mapping in JavaScript, or some other way to swap out values?
– Jeto
Nov 16 '18 at 10:17
@hindmost It's trivial though, and so would a
Map, right?– CertainPerformance
Nov 16 '18 at 10:18