Not those added with escape sequences) to LF ( \n / \u000A).
In fact, the first thing it does is normalizing "real" line breaks (i.e. No matter what line-ending policy your source files use, the compiler will always behave the same. Text blocks work just like regular Java string literals except that they have a different delimiter (allowing you to forego \" in most cases) and can span several lines (making \n unnecessary). So in case you're still having trouble squaring text blocks with other language's raw strings (where no special sequences exist), this is your wake-up call! It's just that their use is discouraged because you rarely need them. Of course, \" and \n also work in text blocks. translateEscapes ( ) // this is true: "\t". The second point leads to the removal of shared leading white space while keeping indentation within the string intact: in what's called a significant trailing line policy the line containing the closing """ is always included in that check (even though it is blank if """ is on its own line!).the result is that at least one of the lines has no leading white space take the smallest of those numbers and remove that many white space characters from each line (once again ignoring the exact kind of character) count the number of leading white space characters in each (the exact character doesn't matter, i.e. all trailing whitespace is removed (and good riddance!).The compiler removes indentation in a fairly interesting and non-trivial algorithm that deserves its own blog post, but the gist is: It doesn't do that directly - instead it removes incidental white space and considers everything else essential. So far we've glossed over how exactly the compiler determines essential white space, though. Treat the closing delimiter as fixed in place and change the content's indentation Now, if you want to change the string's indentation, you have to change the lines you want to indent.
Instead I recommend to let your formatter place the closing """ as it usually does for continued statements (commonly two more indents) and treat it as fixed in place. JEP 355 seems to suggest moving the closing delimiter to change the string's indentation. """ // > Hello, text blocks! // > String hello = """
#Tumblr 100 text blocks code#
Text blocks will usually be indented according to the surrounding code and that indentation is meaningless (or incidental) for the resulting string.Īt the same time, the developer may add additional, meaningful (or essential) white space like in this JSON example: Putting the closing delimiter on its own line, appends a newline That's indeed the case - let's see why (and how). It looks like moving the closing delimiter to the left or the content to the right has the same effect: additional indentation of the final string. The last two examples are a little less obvious. The second example shows that putting a text block's closing delimiter on its own line appends a newline to the end of the resulting string. """ ) // > Hello, multiline text blocks! // > """ ) // > Hello, multiline text blocks! // > System. Hello, multiline text blocks!""" ) // > Hello, multiline text blocks! System. We'll come to placing the closing """ in a second.
#Tumblr 100 text blocks free#
If you know similar features from other languages, channel your inner Duke and ignore them for a moment to free your mind for Java's variant. Raw strings are on the table, though, and thanks to the fast releases we may see them as early as 2020.īut that's for another post - in this one we'll dive into text blocks. Text blocks are a straightforward feature (introduced by JEP 355) without any bells and whistles: no raw strings and no variable or even expression interpolation - all we get now are literals that span several lines.
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