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The pipe-bind operator => · Issue #432 · REditorSupport/languageserver · GitHub
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Description
Currently, the pipe-bind operator =>
is disabled by default. It could be enabled by
Sys.setenv("_R_USE_PIPEBIND_" = "true")
It seems that the documentation does not mention it? Just to put a note here. Not suggesting that we should do anything about it at the moment.
mtcars |>
transform(kmL = mpg / 2.35) |>
d => lm(kmL ~ hp, data = d)
The XML parse tree of the third line is:
<expr line1="3" col1="3" line2="3" col2="29" start="102" end="128">
<expr line1="3" col1="3" line2="3" col2="3" start="102" end="102">
<SYMBOL line1="3" col1="3" line2="3" col2="3" start="102" end="102">d</SYMBOL>
</expr>
<PIPEBIND line1="3" col1="5" line2="3" col2="6" start="104" end="105">=></PIPEBIND>
<expr line1="3" col1="8" line2="3" col2="29" start="107" end="128">
<expr line1="3" col1="8" line2="3" col2="9" start="107" end="108">
<SYMBOL_FUNCTION_CALL line1="3" col1="8" line2="3" col2="9" start="107" end="108">lm</SYMBOL_FUNCTION_CALL>
</expr>
<OP-LEFT-PAREN line1="3" col1="10" line2="3" col2="10" start="109" end="109">(</OP-LEFT-PAREN>
<expr line1="3" col1="11" line2="3" col2="18" start="110" end="117">
<expr line1="3" col1="11" line2="3" col2="13" start="110" end="112">
<SYMBOL line1="3" col1="11" line2="3" col2="13" start="110" end="112">kmL</SYMBOL>
</expr>
<OP-TILDE line1="3" col1="15" line2="3" col2="15" start="114" end="114">~</OP-TILDE>
<expr line1="3" col1="17" line2="3" col2="18" start="116" end="117">
<SYMBOL line1="3" col1="17" line2="3" col2="18" start="116" end="117">hp</SYMBOL>
</expr>
</expr>
<OP-COMMA line1="3" col1="19" line2="3" col2="19" start="118" end="118">,</OP-COMMA>
<SYMBOL_SUB line1="3" col1="21" line2="3" col2="24" start="120" end="123">data</SYMBOL_SUB>
<EQ_SUB line1="3" col1="26" line2="3" col2="26" start="125" end="125">=</EQ_SUB>
<expr line1="3" col1="28" line2="3" col2="28" start="127" end="127">
<SYMBOL line1="3" col1="28" line2="3" col2="28" start="127" end="127">d</SYMBOL>
</expr>
<OP-RIGHT-PAREN line1="3" col1="29" line2="3" col2="29" start="128" end="128">)</OP-RIGHT-PAREN>
</expr>
</expr>
If the =>
operator is enabled and supported by default, we could make it behave like another kind of function and support scope completion, definition, hover, etc.
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