在 Purescript 中去除缩进三引号字符串的边距?
Strip margin of indented triple-quote string in Purescript?
当在缩进位置使用三引号时,我肯定也会在输出 js 字符串中缩进:
在嵌套的 let 中比较这两个
let input1 = "T1\nX55.555Y-44.444\nX52.324Y-40.386"
let input2 = """T1
X66.324Y-40.386
X52.324Y-40.386"""
给予
// single quotes with \n
"T1\x0aX55.555Y-44.444\x0aX52.324Y-40.386"
// triple quoted
"T1\x0a X66.324Y-40.386\x0a X52.324Y-40.386"
在 Scala 中是否有像 stripMargin
这样的约定,这样我就可以使用它们而不必取消缩进到顶层?
更新,为了澄清我的意思,我目前正在做的事情:
describe "header" do
it "should parse example header" do
let input = """M48
;DRILL file {KiCad 4.0.7} date Wednesday, 31 January 2018 'AMt' 11:08:53
;FORMAT={-:-/ absolute / metric / decimal}
FMAT,2
METRIC,TZ
T1C0.300
T2C0.400
T3C0.600
T4C0.800
T5C1.000
T6C1.016
T7C3.400
%
"""
doesParse input header
describe "hole" do
it "should parse a simple hole" do
doesParse "X52.324Y-40.386" hole
更新:
我被要求澄清来自 Scala 的 stripMargin。它是这样使用的:
val speech = """T1
|X66.324Y-40.386
|X52.324Y-40.386""".stripMargin
然后删除前导空格。 stripMargin
可以使用任何分隔符,但默认为 |.
更多示例:
Rust 有 https://docs.rs/trim-margin/0.1.0/trim_margin/
Kotlin 在 stdlib 中有:https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/trim-margin.html
我想这听起来像是要左垫 (:) ),但如果已经有东西了,我宁愿不自己酿造它……
很抱歉你没有得到及时的回复,但我已经实现了这个功能here. In case the pull request isn't merged, here's an implementation that just depends on purescript-strings
:
import Data.String (joinWith, split) as String
import Data.String.CodeUnits (drop, dropWhile) as String
import Data.String.Pattern (Pattern(..))
stripMargin :: String -> String
stripMargin =
let
lines = String.split (Pattern "\n")
unlines = String.joinWith "\n"
mapLines f = unlines <<< map f <<< lines
in
mapLines (String.drop 1 <<< String.dropWhile (_ /= '|'))
当在缩进位置使用三引号时,我肯定也会在输出 js 字符串中缩进:
在嵌套的 let 中比较这两个
let input1 = "T1\nX55.555Y-44.444\nX52.324Y-40.386"
let input2 = """T1
X66.324Y-40.386
X52.324Y-40.386"""
给予
// single quotes with \n
"T1\x0aX55.555Y-44.444\x0aX52.324Y-40.386"
// triple quoted
"T1\x0a X66.324Y-40.386\x0a X52.324Y-40.386"
在 Scala 中是否有像 stripMargin
这样的约定,这样我就可以使用它们而不必取消缩进到顶层?
更新,为了澄清我的意思,我目前正在做的事情:
describe "header" do
it "should parse example header" do
let input = """M48
;DRILL file {KiCad 4.0.7} date Wednesday, 31 January 2018 'AMt' 11:08:53
;FORMAT={-:-/ absolute / metric / decimal}
FMAT,2
METRIC,TZ
T1C0.300
T2C0.400
T3C0.600
T4C0.800
T5C1.000
T6C1.016
T7C3.400
%
"""
doesParse input header
describe "hole" do
it "should parse a simple hole" do
doesParse "X52.324Y-40.386" hole
更新:
我被要求澄清来自 Scala 的 stripMargin。它是这样使用的:
val speech = """T1
|X66.324Y-40.386
|X52.324Y-40.386""".stripMargin
然后删除前导空格。 stripMargin
可以使用任何分隔符,但默认为 |.
更多示例:
Rust 有 https://docs.rs/trim-margin/0.1.0/trim_margin/ Kotlin 在 stdlib 中有:https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/trim-margin.html
我想这听起来像是要左垫 (:) ),但如果已经有东西了,我宁愿不自己酿造它……
很抱歉你没有得到及时的回复,但我已经实现了这个功能here. In case the pull request isn't merged, here's an implementation that just depends on purescript-strings
:
import Data.String (joinWith, split) as String
import Data.String.CodeUnits (drop, dropWhile) as String
import Data.String.Pattern (Pattern(..))
stripMargin :: String -> String
stripMargin =
let
lines = String.split (Pattern "\n")
unlines = String.joinWith "\n"
mapLines f = unlines <<< map f <<< lines
in
mapLines (String.drop 1 <<< String.dropWhile (_ /= '|'))