multiline

问题 Is it possible to split a PowerShell command line over multiple lines? In Visual Basic I can use the underscore ( _ ) to continue the command in the next line. 回答1: You can use a space followed by the grave accent (backtick): Get-ChildItem -Recurse ` -Filter *.jpg ` | Select LastWriteTime However, this is only ever necessary in such cases as shown above. Usually you get automatic line continuation when a command cannot syntactically be complete at that point. This includes starting a new

问题 This question already has answers here : Closed 10 years ago . Possible Duplicates: What’s the use of do while(0) when we define a macro? Why are there sometimes meaningless do/while and if/else statements in C/C++ macros? do { … } while (0) what is it good for? I\'ve seen some multi-line C macros that are wrapped inside a do/while(0) loop like: #define FOO \\ do { \\ do_stuff_here \\ do_more_stuff \\ } while (0) What are the benefits (if any) of writing the code that way as opposed to using

问题 For example, this regex (.*)<FooBar> will match: abcde<FooBar> But how do I get it to match across multiple lines? abcde fghij<FooBar> 回答1: It depends on the language, but there should be a modifier that you can add to the regex pattern. In PHP it is: /(.*)<FooBar>/s The s at the end causes the dot to match all characters including newlines. 回答2: Try this: ((.|\n)*)<FooBar> It basically says "any character or a newline" repeated zero or more times. 回答3: The question is, can . pattern match

问题 Coming from Perl, I sure am missing the \"here-document\" means of creating a multi-line string in source code: $string = <<\"EOF\" # create a three-line string text text text EOF In Java, I have to have cumbersome quotes and plus signs on every line as I concatenate my multiline string from scratch. What are some better alternatives? Define my string in a properties file? Edit : Two answers say StringBuilder.append() is preferable to the plus notation. Could anyone elaborate as to why they

问题 I need to ellipsize a multi-line textview. My component is large enough to display at least 4 lines with the ellipse, but only 2 lines are displayed. I tried to change the minimum and maximum number of rows of the component but it changes nothing. 回答1: Here is a solution to the problem. It is a subclass of TextView that actually works for ellipsizing. The android-textview-multiline-ellipse code listed in an earlier answer I have found to be buggy in certain circumstances, as well as being

问题 I\'m writing some data files in JSON format and would like to have some really long string values split over multiple lines. Using python\'s JSON module I get a whole lot of errors, whether I use \\ or \\n as an escape. Is it possible to have multi-line strings in JSON? It\'s mostly for visual comfort so I suppose I can just turn word wrap on in my editor, but I\'m just kinda curious... 回答1: JSON does not allow real line-breaks. You need to replace all the line breaks with \n . eg: "first

问题 I have the following code in Ruby. I want to convert this code into JavaScript. what\'s the equivalent code in JS? text = <<\"HERE\" This Is A Multiline String HERE 回答1: Update: ECMAScript 6 (ES6) introduces a new type of literal, namely template literals. They have many features, variable interpolation among others, but most importantly for this question, they can be multiline. A template literal is delimited by backticks : var html = ` <div> <span>Some HTML here</span> </div> `; (Note: I'm

问题 I have a very long query. I would like to split it in several lines in Python. A way to do it in JavaScript would be using several sentences and joining them with a + operator (I know, maybe it\'s not the most efficient way to do it, but I\'m not really concerned about performance in this stage, just code readability). Example: var long_string = \'some text not important. just garbage to\' + \'illustrate my example\'; I tried doing something similar in Python, but it didn\'t work, so I used \