<div dir="ltr">This would be prefer to follow Scala multiline string which look<div><br></div><div>1) //Default </div><div><font face="monospace, monospace">var code = <font color="#ff0000">"""</font></font><span style="font-family:monospace,monospace">header</span></div><div><font face="monospace, monospace">paragraph1</font><span style="color:rgb(255,0,0);font-family:monospace,monospace">"""</span></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace"><b>Output:</b></font></div><div><div><font face="monospace, monospace">>header</font></div><div><font face="monospace, monospace">>paragraph1</font></div></div><div><br></div><div><font face="monospace, monospace">2)</font></div><div><div><font face="monospace, monospace">var code = <font color="#ff0000">"""</font></font></div><div><font face="monospace, monospace">...header...</font></div><div><font face="monospace, monospace">...paragraph1...</font></div><div><font face="monospace, monospace"><font color="#ff0000">"""</font></font><span style="font-family:monospace,monospace">.replace("...")</span></div></div><div><font face="monospace, monospace"><br></font></div><div><div><font face="monospace, monospace"><b>Output:</b></font></div><div><div><font face="monospace, monospace">>header</font></div><div><font face="monospace, monospace">>paragraph1</font></div></div></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace">3)</font></div><div><div><font face="monospace, monospace">var code = <font color="#ff0000">"""</font></font></div><div><font face="monospace, monospace"> |..header...</font></div><div><font face="monospace, monospace"> |..paragraph1...</font></div><div><font color="#ff0000" style="font-family:monospace,monospace">"""</font><span style="font-family:monospace,monospace">.stripLeadingSpace()</span></div></div><div><font face="monospace, monospace"><br></font></div><div><div><font face="monospace, monospace"><b>Output:</b></font></div><div><div><font face="monospace, monospace">>header...</font></div><div><font face="monospace, monospace">>paragraph1...</font></div></div></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace">4)</font></div><div><div><font face="monospace, monospace">var code = <font color="#ff0000">"""</font></font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace">import Foundation</font></div><div><font face="monospace, monospace">print("Hello World!")</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace"><font color="#ff0000">"""</font>.code()</font></div></div><div><br></div><div><div><font face="monospace, monospace"><b>Output:</b></font></div><div><div><font face="monospace, monospace">></font></div><div><font face="monospace, monospace">></font><span style="font-family:monospace,monospace">import Foundation</span></div><div><font face="monospace, monospace">>print("Hello World!")</font></div></div></div><div><font face="monospace, monospace">></font></div><div><br></div><div>5)</div><div>//To remove all new lines</div><div><div><font face="monospace, monospace">var code = <font color="#ff0000">"""</font></font></div><div><font face="monospace, monospace">import Foundation</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace">import Cocoa</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace">....print("Hello World!")</font></div><div><font face="monospace, monospace"><font color="#ff0000">"""</font>.compactLine()</font></div></div><div><font face="monospace, monospace"><br></font></div><div><div><font face="monospace, monospace"><b>Output:</b></font></div><div></div><div><font face="monospace, monospace">>import Foundation</font></div><div><font face="monospace, monospace">></font><span style="font-family:monospace,monospace">import Cocoa</span></div><div><font face="monospace, monospace">>....print("Hello World!")</font></div></div><div><br></div><div><br></div><div><br></div><div>On Multiline String collection</div><div><br></div><div><div>6) If we are importing many sources from 3rd parties API, we won't know if their code is properly indent, some use tab and some use 2 or 4-space. This would look better on Swift Playground app.</div><div><br></div><div><font face="monospace, monospace"><font color="#ff0000">var </font><b>stories</b> = {</font></div><div><font face="monospace, monospace" color="#ff0000">"""</font></div><div><font face="monospace, monospace">Chapter1</font></div>第1章</div><div><br></div><div>Introduction to A<br><div><font face="monospace, monospace"><font color="#ff0000">"""</font>,</font></div><div><div><font face="monospace, monospace" color="#ff0000">"""</font></div><div><font face="monospace, monospace">Chapter2</font></div><div>第2章<br></div><div><br></div><div>Introduction to B<br></div><div><font face="monospace, monospace" color="#ff0000">"""</font><span style="font-family:monospace,monospace">,</span></div></div><div><div><font face="monospace, monospace" color="#ff0000">"""</font></div><div><font face="monospace, monospace">//Code Example</font></div><div> import Foundation<br></div><div><font face="monospace, monospace" color="#ff0000">"""</font></div></div><div><font face="monospace, monospace">}</font></div><div><font face="monospace, monospace"><br></font></div>We can loop or apply to certain collection<div><font face="monospace, monospace">stories(3).code()</font></div><div><font face="monospace, monospace"><br></font></div><div><font face="monospace, monospace"><br></font></div><div><br></div></div><div>On Saturday, April 15, 2017, Ricardo Parada via swift-evolution <<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>I agree that it is not obvious. </div><div><br></div><div>At one point I argued that the trailing newline on the last line should be stripped. But for this reason and others I am now in the camp that thinks we should leave the trailing newline alone. </div><div><br></div><div>If we don't want to include the trailing newline we can always do this:<br></div><div><br></div><div>let str = """</div><div> Line 1</div><div> Line 2\</div><div> """</div><div><br></div><div>This is were it's difficult to get consensus. </div><div><br></div><div>Regards,</div><div>Ricardo </div><div><br></div><div><br></div><div>On Apr 14, 2017, at 5:54 PM, BJ Homer via swift-evolution <<a>swift-evolution@swift.org</a>> wrote:<br><br></div><blockquote type="cite"><div>I’m not saying that the + operator should automatically add a newline. I’m saying that both strings should contain a trailing newline, such that the visible result is the same.<div><br></div><div>By contrast, this would feel really strange:</div><div><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><span style="font-family:menlo">let a = """<br></span><span style="font-family:menlo">This is line one<br></span><span style="font-family:menlo">This is line two</span></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><span style="font-family:menlo"><br></span><span style="font-family:menlo">"</span><font face="Menlo">""</font></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><font face="Menlo"><br></font><span style="font-family:menlo">let b = """<br></span><span style="font-family:menlo">This is line three<br></span><span style="font-family:menlo">This is line four</span></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><span style="font-family:menlo">"</span><font face="Menlo">""</font></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><font face="Menlo"><br></font><span style="font-family:menlo">(a + b) == """<br></span><span style="font-family:menlo">This is line one<br></span><span style="font-family:menlo">This is line two<br></span><span style="font-family:menlo">This is line three<br></span><span style="font-family:menlo">This is line four</span><div><div class="gmail_quote"><div style="word-wrap:break-word"><div><font face="Menlo">"""</font></div></div></div></div></blockquote><div><blockquote type="cite"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word"><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"></blockquote></div></blockquote></div></blockquote><div><br></div><div>On initial intuition, it seems strange that ‘a’ has a blatantly visible blank line at the end which seemingly “disappears” when the strings are concatenated. If I think about it for a bit, I can understand why that would be the case, but I think it’s non-obvious.</div><div><br></div><div>-BJ</div><div><br><div><blockquote type="cite"><div>On Apr 14, 2017, at 3:49 PM, Xiaodi Wu <<a>xiaodi.wu@gmail.com</a>> wrote:</div><br><div>I disagree. I expect the last result to be from `a + "\n" + b`, for the reasons I outlined earlier.<br><br>The concatenation operator + does not introduce implied separators when joining strings. There is no reason to think that it should for multi-line strings specifically.<br><div class="gmail_quote"><div dir="ltr">On Fri, Apr 14, 2017 at 16:35 BJ Homer via swift-evolution <<a>swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word"><div style="margin:15px 0px;font-family:helvetica,arial;font-size:13px"><br></div><blockquote type="cite"><p style="margin:15px 0px;font-family:helvetica,arial;font-size:13px">Consider these two examples:</p><pre style="margin-top:15px;margin-bottom:15px;font-family:menlo,consolas,"liberation mono",courier,monospace;font-size:10pt;border-radius:3px;background-color:rgb(248,248,248);border:1px solid rgb(204,204,204);overflow:auto;padding:4px 8px;word-break:normal;word-wrap:normal"><code style="font-family:menlo,consolas,"liberation mono",courier,monospace;font-size:10pt;border-radius:3px;color:inherit;border:0px;margin:0px;padding:0px;word-break:normal;word-wrap:normal">let string_1 = """foo"""
let string_2 = """
foo
"""
</code></pre><p style="margin:15px 0px;font-family:helvetica,arial;font-size:13px">What’s the intuitive result you’d expect without taking all the long talk from the list into account?</p><p style="margin:15px 0px;font-family:helvetica,arial;font-size:13px">Personally, I’d say <code style="font-family:menlo,consolas,"liberation mono",courier,monospace;font-size:10pt;border-radius:3px;background-color:rgb(248,248,248);color:inherit;border:1px solid rgb(234,234,234);margin:0px 2px;padding:0px 5px;word-break:normal;word-wrap:normal">string_1 == string_2</code> is true.</p></blockquote><div><br></div></div><div style="word-wrap:break-word"><div>I think it’s reasonable to expect them to be different, actually. I might call these “single-line” and “multi-line” mode strings. The single-line mode is primarily useful for being able to include unescaped double-quotes in the string. If you’re in multi-line mode, though, it’s reasonable to be thinking about things in terms of “lines”, and having a trailing newline there seems reasonable. For example, I think it’s reasonable to expect this:</div><div><font face="Menlo"><br></font></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><font face="Menlo"><span><div>let a = """</div></span></font><font face="Menlo"><span><div>This is line one</div></span></font><font face="Menlo"><span><div>This is line two"</div></span></font><font face="Menlo"><span><div>"""</div></span></font><font face="Menlo"><span><div><br></div></span></font><font face="Menlo"><span><div>let b = """</div></span></font><font face="Menlo"><span><div>This is line three</div></span></font><font face="Menlo"><span><div>This is line four</div></span></font><font face="Menlo"><span><div>"""</div></span></font><span><br></span><div><font face="Menlo">(a + b) == """</font></div><div><font face="Menlo">This is line one</font></div><div><font face="Menlo">This is line two</font></div><div><font face="Menlo">This is line three</font></div><div><font face="Menlo">This is line four</font></div><div><font face="Menlo">"""</font></div></blockquote><div><br></div><div>That seems like a reasonable model to work with multi-line strings.</div></div><div style="word-wrap:break-word"><div><br></div><div>-BJ</div></div>______________________________<wbr>_________________<br>
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