如何在“”内打印双引号？
How to print double quotes inside ""?
谁能告诉我如何按以下方式打印内容 "with" 双引号。
"Double Quotes"
在要插入字符串的双引号前加上反斜杠：
let sentence = "They said \"It's okay\", didn't they?"
现在 sentence 是：
They said "It's okay", didn't they?
它被称为"escaping"一个字符：您正在使用它的字面值，它不会被解释。
使用 Swift 4，您可以选择使用 """ 分隔符作为不需要转义的文字文本：
let sentence = """
They said "It's okay", didn't they?
Yes, "okay" is what they said.
"""
这给出：
They said "It's okay", didn't they?
Yes, "okay" is what they said.
对于 Swift 5，您可以使用增强的分隔符：
String literals can now be expressed using enhanced delimiters. A string literal with one or more number signs (#) before the opening quote treats backslashes and double-quote characters as literal unless they’re followed by the same number of number signs. Use enhanced delimiters to avoid cluttering string literals that contain many double-quote or backslash characters with extra escapes.
您的字符串现在可以表示为：
let sentence = #"They said "It's okay", didn't they?"#
如果你想给你的字符串添加变量，你还应该在反斜杠后添加 #：
let sentence = #"My "homepage" is \#(url)"#
为了完整起见，来自Apple docs：
String literals can include the following special characters:
- The escaped special characters [=12=] (null character), \ (backslash), \t
(horizontal tab), \n (line feed), \r (carriage return), \" (double
quote) and \' (single quote)
- An arbitrary Unicode scalar, written as
\u{n}, where n is a 1–8 digit hexadecimal number with a value equal to
a valid Unicode code point
这意味着除了可以用反斜杠转义字符外，还可以使用unicode值。以下两个语句是等价的：
let myString = "I love \"unnecessary\" quotation marks"
let myString = "I love \u{22}unnecessary\u{22} quotation marks"
myString 现在将包含：
I love "unnecessary" quotation marks
根据您的需要，您可以使用以下 4 种模式之一 打印包含双引号的 Swift String .
1。使用转义双引号
字符串文字可以包含特殊字符，例如 \":
let string = "A string with \"double quotes\" in it."
print(string) //prints: A string with "double quotes" in it.
2。使用 Unicode 标量
字符串文字可以包括写成 \u{n}:
的 Unicode 标量值
let string = "A string with \u{22}double quotes\u{22} in it."
print(string) //prints: A string with "double quotes" in it.
3。使用多行字符串文字（需要 Swift 4）
The Swift Programming Language / Strings and Characters 状态：
Because multiline string literals use three double quotation marks instead of just one, you can include a double quotation mark (") inside of a multiline string literal without escaping it.
let string = """
A string with "double quotes" in it.
"""
print(string) //prints: A string with "double quotes" in it.
4。使用原始字符串文字（需要 Swift 5）
The Swift Programming Language / Strings and Characters 状态：
You can place a string literal within extended delimiters to include special characters in a string without invoking their effect. You place your string within quotation marks (") and surround that with number signs (#). For example, printing the string literal #"Line 1\nLine 2"# prints the line feed escape sequence (\n) rather than printing the string across two lines.
let string = #"A string with "double quotes" in it."#
print(string) //prints: A string with "double quotes" in it.
谁能告诉我如何按以下方式打印内容 "with" 双引号。
"Double Quotes"
在要插入字符串的双引号前加上反斜杠：
let sentence = "They said \"It's okay\", didn't they?"
现在 sentence 是：
They said "It's okay", didn't they?
它被称为"escaping"一个字符：您正在使用它的字面值，它不会被解释。
使用 Swift 4，您可以选择使用 """ 分隔符作为不需要转义的文字文本：
let sentence = """
They said "It's okay", didn't they?
Yes, "okay" is what they said.
"""
这给出：
They said "It's okay", didn't they?
Yes, "okay" is what they said.
对于 Swift 5，您可以使用增强的分隔符：
String literals can now be expressed using enhanced delimiters. A string literal with one or more number signs (#) before the opening quote treats backslashes and double-quote characters as literal unless they’re followed by the same number of number signs. Use enhanced delimiters to avoid cluttering string literals that contain many double-quote or backslash characters with extra escapes.
您的字符串现在可以表示为：
let sentence = #"They said "It's okay", didn't they?"#
如果你想给你的字符串添加变量，你还应该在反斜杠后添加 #：
let sentence = #"My "homepage" is \#(url)"#
为了完整起见，来自Apple docs：
String literals can include the following special characters:
- The escaped special characters [=12=] (null character), \ (backslash), \t (horizontal tab), \n (line feed), \r (carriage return), \" (double quote) and \' (single quote)
- An arbitrary Unicode scalar, written as \u{n}, where n is a 1–8 digit hexadecimal number with a value equal to a valid Unicode code point
这意味着除了可以用反斜杠转义字符外，还可以使用unicode值。以下两个语句是等价的：
let myString = "I love \"unnecessary\" quotation marks"
let myString = "I love \u{22}unnecessary\u{22} quotation marks"
myString 现在将包含：
I love "unnecessary" quotation marks
根据您的需要，您可以使用以下 4 种模式之一 打印包含双引号的 Swift String .
1。使用转义双引号
字符串文字可以包含特殊字符，例如 \":
let string = "A string with \"double quotes\" in it."
print(string) //prints: A string with "double quotes" in it.
2。使用 Unicode 标量
字符串文字可以包括写成 \u{n}:
let string = "A string with \u{22}double quotes\u{22} in it."
print(string) //prints: A string with "double quotes" in it.
3。使用多行字符串文字（需要 Swift 4）
The Swift Programming Language / Strings and Characters 状态：
Because multiline string literals use three double quotation marks instead of just one, you can include a double quotation mark (
") inside of a multiline string literal without escaping it.
let string = """
A string with "double quotes" in it.
"""
print(string) //prints: A string with "double quotes" in it.
4。使用原始字符串文字（需要 Swift 5）
The Swift Programming Language / Strings and Characters 状态：
You can place a string literal within extended delimiters to include special characters in a string without invoking their effect. You place your string within quotation marks (
") and surround that with number signs (#). For example, printing the string literal#"Line 1\nLine 2"#prints the line feed escape sequence (\n) rather than printing the string across two lines.
let string = #"A string with "double quotes" in it."#
print(string) //prints: A string with "double quotes" in it.