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If-then-else documentation for forking conditional (fix #942)

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David Tolnay committed 2015-10-17 21:15:24 -07:00
1 parent c8dc164566
commit 6c31850e86
5 files changed
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docs/content/3.manual/manual.yml
+3 -3
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@@ -1863,9 +1863,9 @@ sections:
need something more like `if (.name | length) > 0 then A else need something more like `if (.name | length) > 0 then A else
B end` instead. B end` instead.
If the condition A produces multiple results, it is If the condition `A` produces multiple results, then `B` is evaluated
considered "true" if any of those results is not false or once for each result that is not false or null, and `C` is evaluated
null. If it produces zero results, it's considered false. once for each false or null.
More cases can be added to an if using `elif A then B` syntax. More cases can be added to an if using `elif A then B` syntax.
docs/content/3.manual/v1.3/manual.yml
+3 -3
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@@ -913,9 +913,9 @@ sections:
need something more like `if (.name | count) > 0 then A else need something more like `if (.name | count) > 0 then A else
B end` instead. B end` instead.
If the condition A produces multiple results, it is If the condition `A` produces multiple results, then `B` is evaluated
considered "true" if any of those results is not false or once for each result that is not false or null, and `C` is evaluated
null. If it produces zero results, it's considered false. once for each false or null.
More cases can be added to an if using `elif A then B` syntax. More cases can be added to an if using `elif A then B` syntax.
docs/content/3.manual/v1.4/manual.yml
+3 -3
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@@ -1315,9 +1315,9 @@ sections:
need something more like `if (.name | length) > 0 then A else need something more like `if (.name | length) > 0 then A else
B end` instead. B end` instead.
If the condition A produces multiple results, it is If the condition `A` produces multiple results, then `B` is evaluated
considered "true" if any of those results is not false or once for each result that is not false or null, and `C` is evaluated
null. If it produces zero results, it's considered false. once for each false or null.
More cases can be added to an if using `elif A then B` syntax. More cases can be added to an if using `elif A then B` syntax.
docs/content/3.manual/v1.5/manual.yml
+3 -3
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@@ -1794,9 +1794,9 @@ sections:
need something more like `if (.name | length) > 0 then A else need something more like `if (.name | length) > 0 then A else
B end` instead. B end` instead.
If the condition A produces multiple results, it is If the condition `A` produces multiple results, then `B` is evaluated
considered "true" if any of those results is not false or once for each result that is not false or null, and `C` is evaluated
null. If it produces zero results, it's considered false. once for each false or null.
More cases can be added to an if using `elif A then B` syntax. More cases can be added to an if using `elif A then B` syntax.
tests/jq.test
+14 -1
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@@ -867,8 +867,21 @@ try (def x: reverse; x=10) catch .
[{"foo":0},{"foo":1},{"foo":[]},{"foo":true},{"foo":false},{"foo":null},{"foo":"foo"},{}] [{"foo":0},{"foo":1},{"foo":[]},{"foo":true},{"foo":false},{"foo":null},{"foo":"foo"},{}]
["yep","yep","yep","yep","nope","nope","yep","nope"] ["yep","yep","yep","yep","nope","nope","yep","nope"]
[if 1,null,2 then 3 else 4 end]
null
[3,4,3]
# FIXME: define/test behaviour of 'if (.foo,.bar) then A else B end' [if empty then 3 else 4 end]
null
[]
[if 1 then 3,4 else 5 end]
null
[3,4]
[if null then 3 else 5,6 end]
null
[5,6]
[.[] | [.foo[] // .bar]] [.[] | [.foo[] // .bar]]
[{"foo":[1,2], "bar": 42}, {"foo":[1], "bar": null}, {"foo":[null,false,3], "bar": 18}, {"foo":[], "bar":42}, {"foo": [null,false,null], "bar": 41}] [{"foo":[1,2], "bar": 42}, {"foo":[1], "bar": null}, {"foo":[null,false,3], "bar": 18}, {"foo":[], "bar":42}, {"foo": [null,false,null], "bar": 41}]