trim

问题 How to use character function of where the result is of unknown length initially? The trim() function, I understand, shows that it is possible not to specify the length of returning string. For example: write (*,*) trim(str) will return only part of the string without trailing spaces. This function does not have any idea about the length of returning string before the call. Or trim() function has limitations? On more variant is to find original code of trim() function. I have found (Returning

问题 I have a voice memo component in my app, and I want to allow the user to trim the audio, similar to QuickTime X on Mac OS Ten point Six handles it, or like the Voice Memos app on the iPhone. Here's an example of both: Any help is appreciated. 回答1: I am not a UI programmer by any means. This was a test I wrote to see how to write custom controls. This code may or may not work. I have not touched it in some time. header @interface SUIMaxSlider : UIControl { @private float_t minimumValue; float

问题 I have a voice memo component in my app, and I want to allow the user to trim the audio, similar to QuickTime X on Mac OS Ten point Six handles it, or like the Voice Memos app on the iPhone. Here's an example of both: Any help is appreciated. 回答1: I am not a UI programmer by any means. This was a test I wrote to see how to write custom controls. This code may or may not work. I have not touched it in some time. header @interface SUIMaxSlider : UIControl { @private float_t minimumValue; float

问题 Is it me or are there no standard trim functions in the c or c++ library? is there any single function that acts as a trim? If not can anyone tell me Why trim is not part of the standard library? (i know trim is in boost) My trim code is std::string trim(const std::string &str) { size_t s = str.find_first_not_of(" \n\r\t"); size_t e = str.find_last_not_of (" \n\r\t"); if(( string::npos == s) || ( string::npos == e)) return ""; else return str.substr(s, e-s+1); } test: cout << trim(" \n\r\r\n

问题 Incorrect decrement of the reference count of an object that is not owned at this point by the caller on iPhone. It is happening with NSString which I clearly init and release within the for loop. I have tried to do the same as an autoreleases string but I get leaks. I assume the culprit is the stringbytrimming call. Any suggestions, by the way this does not leak, but I get the warning in build and analyze. Everything also works fine and the app does not crash. for(int i=0;i<storyQuantity;i++

问题 In javascript, how to I do a right trim? I have the following: var s1 = "this is a test~"; var s = s1.rtrim('~') but was not successful 回答1: Use a RegExp. Don't forget to escape special characters. s1 = s1.replace(/~+$/, ''); //$ marks the end of a string // ~+$ means: all ~ characters at the end of a string 回答2: You can modify the String prototype if you like. Modifying the String prototype is generally frowned upon, but I personally prefer this method, as it makes the code cleaner IMHO.

问题 Is there a way to force Xcode to trim trailing whitespaces when I save file? I'm using version 3.1.3 if that matters. 回答1: You can create a script and bind it to a keyboard shortcut: Select Scripts Menu > Edit User Scripts... Press the + button and select New Shell Script Give it a name like "Strip Trailing Spaces", and give it a shortcut like ⌃⇧R. Set Input to "Selection" and Output to "Replace Selection" Then enter the following script: #!/usr/bin/perl while (<>) { s/\s+$//; print "$_\n"; }

问题 This question already has answers here : How to trim white spaces of array values in php (11 answers) Closed 6 years ago . If I have this array: array(" hey ", "bla ", " test"); and I want to trim all of them, How can I do that? The array after the trim: array("hey", "bla", "test"); 回答1: array_map() is what you need: $result = array_map('trim', $source_array); 回答2: array_map() applies a given callback to every value of an array and return the results as a new array. $array = array_map('trim',

问题 I try to left trim the newlines in tsql. So I want to remove the leading CHAR(13) + CHAR(10) of my data in a Field. And ensure that the other newlines will not be removed. I mean this: ' Kanne Oliver Rosa-Luxemburg-Str. 3 07817 Alton ( Elster)' Should be this: 'Kanne Oliver Rosa-Luxemburg-Str. 3 07817 Alton ( Elster)' Thanks in advance :D 回答1: If every row of the data have the CR LF at the begin just strip them from the rows SELECT SUBSTRING(3, LEN(field)) field FROM Table otherwise, if not

问题 I'm using array_map to trim all my array values but I need to pass a third parameter because I need to more than just trim whitespaces so I'm passing in a third parameter. Basically I want to trim all array values of whitespaces, single quotes, and double quotes. I have a utility class where I created the function and it looks like this: public function convertToArray($string, $trim = false) { $split = explode(",", $string); if($trim) { $split = array_map("trim", $split, array(" '\"")); }