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Help: Clarify ordering of list(REMOVE_DUPLICATES)

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This also adds a test to enforce the order behavior of
list(REMOVE_DUPLICATES).
This commit is contained in:
Kyle Edwards
2019-02-27 11:22:57 -05:00
parent b13a8441cd
commit 258298f597
3 changed files with 9 additions and 1 deletions
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3
Help/command/list.rst
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@@ -196,7 +196,8 @@ Removes items at given indices from the list.
list(REMOVE_DUPLICATES <list>)
Removes duplicated items in the list.
Removes duplicated items in the list. The relative order of items is preserved,
but if duplicates are encountered, only the first instance is preserved.
.. _TRANSFORM:

5
Tests/RunCMake/list/REMOVE_DUPLICATES-PreserveOrder.cmake Normal file
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@@ -0,0 +1,5 @@
set(mylist "b;c;b;a;a;c;b;a;c;b")
list(REMOVE_DUPLICATES mylist)
if(NOT mylist STREQUAL "b;c;a")
message(SEND_ERROR "Expected b;c;a, got ${mylist}")
endif()

2
Tests/RunCMake/list/RunCMakeTest.cmake
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@@ -24,6 +24,8 @@ run_cmake(SUBLIST-TooManyArguments)
run_cmake(REMOVE_AT-EmptyList)
run_cmake(REMOVE_DUPLICATES-PreserveOrder)
run_cmake(FILTER-NotList)
run_cmake(REMOVE_AT-NotList)
run_cmake(REMOVE_DUPLICATES-NotList)