How did `find` actually locate a character in a string, when it was passed a string, not a character?
0
I was surprised to note that find "rspq" "q" actually found q in the series. The reason it surprised me is that the string "rpsq" is a series of characters and I expected to have to specify "q" as a character not as a string.
This leads to 2 questions for me:
1. how do I specify the character q in Red?
1. why did the search succeed even though I passed in a string not a character?
red
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
add a comment |
0
I was surprised to note that find "rspq" "q" actually found q in the series. The reason it surprised me is that the string "rpsq" is a series of characters and I expected to have to specify "q" as a character not as a string.
This leads to 2 questions for me:
1. how do I specify the character q in Red?
1. why did the search succeed even though I passed in a string not a character?
red
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
You probably expected a functionality offind's/samerefinement. In documentation (? find) you can read:/same => Use "same?" as comparator.But strangely, even withfind/same, result is not what you would expect, despite that(same? "q" "q") = false.
– Maciek Łoziński
Jan 19 at 15:20
2
Anyway, I think you should not ask two questions at once, and think about keeping your question's title reflect what you ask in the content.
– Maciek Łoziński
Jan 19 at 15:30
add a comment |
0
0
0
I was surprised to note that find "rspq" "q" actually found q in the series. The reason it surprised me is that the string "rpsq" is a series of characters and I expected to have to specify "q" as a character not as a string.
This leads to 2 questions for me:
1. how do I specify the character q in Red?
1. why did the search succeed even though I passed in a string not a character?
red
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
I was surprised to note that find "rspq" "q" actually found q in the series. The reason it surprised me is that the string "rpsq" is a series of characters and I expected to have to specify "q" as a character not as a string.
This leads to 2 questions for me:
1. how do I specify the character q in Red?
1. why did the search succeed even though I passed in a string not a character?
red
red
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
asked Jan 19 at 14:03
Terrence BrannonTerrence Brannon
1,73542448
1,73542448
You probably expected a functionality offind's/samerefinement. In documentation (? find) you can read:/same => Use "same?" as comparator.But strangely, even withfind/same, result is not what you would expect, despite that(same? "q" "q") = false.
– Maciek Łoziński
Jan 19 at 15:20
2
Anyway, I think you should not ask two questions at once, and think about keeping your question's title reflect what you ask in the content.
– Maciek Łoziński
Jan 19 at 15:30
add a comment |
You probably expected a functionality offind's/samerefinement. In documentation (? find) you can read:/same => Use "same?" as comparator.But strangely, even withfind/same, result is not what you would expect, despite that(same? "q" "q") = false.
– Maciek Łoziński
Jan 19 at 15:20
2
Anyway, I think you should not ask two questions at once, and think about keeping your question's title reflect what you ask in the content.
– Maciek Łoziński
Jan 19 at 15:30
You probably expected a functionality of
find's /same refinement. In documentation (? find) you can read: /same => Use "same?" as comparator. But strangely, even with find/same, result is not what you would expect, despite that (same? "q" "q") = false.– Maciek Łoziński
Jan 19 at 15:20
You probably expected a functionality of
find's /same refinement. In documentation (? find) you can read: /same => Use "same?" as comparator. But strangely, even with find/same, result is not what you would expect, despite that (same? "q" "q") = false.– Maciek Łoziński
Jan 19 at 15:20
2
2
Anyway, I think you should not ask two questions at once, and think about keeping your question's title reflect what you ask in the content.
– Maciek Łoziński
Jan 19 at 15:30
Anyway, I think you should not ask two questions at once, and think about keeping your question's title reflect what you ask in the content.
– Maciek Łoziński
Jan 19 at 15:30
add a comment |
2 Answers
2
active
oldest
votes
1
- Consult the official reference documentation.
- Functions in Red are highly polymorphic.
findcan either search for a given element or a first occurence of sub-series.
answered Jan 19 at 14:47
92149214
35817
add a comment |
1
- Characters are values of
char!type, and are specified like this:c: #"q". - I'd say it's because Red tries to copy behavior of Rebol. And in Rebol's documentation you can find this example:
probe find "here and now" "and"
"and now"
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
- Consult the official reference documentation.
- Functions in Red are highly polymorphic.
findcan either search for a given element or a first occurence of sub-series.
answered Jan 19 at 14:47
92149214
35817
add a comment |
1
- Consult the official reference documentation.
- Functions in Red are highly polymorphic.
findcan either search for a given element or a first occurence of sub-series.
answered Jan 19 at 14:47
92149214
35817
add a comment |
1
1
1
- Consult the official reference documentation.
- Functions in Red are highly polymorphic.
findcan either search for a given element or a first occurence of sub-series.
answered Jan 19 at 14:47
92149214
35817
- Consult the official reference documentation.
- Functions in Red are highly polymorphic.
findcan either search for a given element or a first occurence of sub-series.
answered Jan 19 at 14:47
92149214
35817
edited Jan 19 at 15:14
answered Jan 19 at 14:47
92149214
35817
answered Jan 19 at 14:47
92149214
35817
answered Jan 19 at 14:47
92149214
35817
35817
add a comment |
add a comment |
1
- Characters are values of
char!type, and are specified like this:c: #"q". - I'd say it's because Red tries to copy behavior of Rebol. And in Rebol's documentation you can find this example:
probe find "here and now" "and"
"and now"
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
add a comment |
1
- Characters are values of
char!type, and are specified like this:c: #"q". - I'd say it's because Red tries to copy behavior of Rebol. And in Rebol's documentation you can find this example:
probe find "here and now" "and"
"and now"
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
add a comment |
1
1
1
- Characters are values of
char!type, and are specified like this:c: #"q". - I'd say it's because Red tries to copy behavior of Rebol. And in Rebol's documentation you can find this example:
probe find "here and now" "and"
"and now"
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
- Characters are values of
char!type, and are specified like this:c: #"q". - I'd say it's because Red tries to copy behavior of Rebol. And in Rebol's documentation you can find this example:
probe find "here and now" "and"
"and now"
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
answered Jan 19 at 15:09
Maciek ŁozińskiMaciek Łoziński
445613
445613
add a comment |
add a comment |
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You probably expected a functionality of
find's/samerefinement. In documentation (? find) you can read:/same => Use "same?" as comparator.But strangely, even withfind/same, result is not what you would expect, despite that(same? "q" "q") = false.– Maciek Łoziński
Jan 19 at 15:20
2
Anyway, I think you should not ask two questions at once, and think about keeping your question's title reflect what you ask in the content.
– Maciek Łoziński
Jan 19 at 15:30