trim

问题 Rust provides a trim method for strings: str.trim() removing leading and trailing whitespace. I want to have a method that does the same for bytestrings. It should take a Vec<u8> and remove leading and trailing whitespace (space, 0x20 and htab, 0x09). Writing a trim_left() is easy, you can just use an iterator with skip_while() : Rust Playground fn main() { let a: &[u8] = b" fo o "; let b: Vec<u8> = a.iter().map(|x| x.clone()).skip_while(|x| x == &0x20 || x == &0x09).collect(); println!("{:?}

问题 I can't find a way to crop an image with white borders included. Currently it's an UIImage, and I tried some solutions like UIImage+Trim and CKImageAddons but those libraries didn't work. I think part of the problem is that the borders is not perfectly white because of image compression (I think). Has anyone find a solution for this? Thanks, 回答1: Well, I would use UIImage+Trim and changed the way it works to count visibly white pixels (so if RGB > 255 - small_number_that_still_makes_it_white

问题 How can I trim all spaces from a string, even when they are caused by a non-breaking spaces (   ) For example: var foo = $.trim($('<p> foo </p>').text()); The value of foo is " foo " instead of "foo" UPDATE So, the problem wasn't jQuery's trim function. It works great. The problem is MSAjax's trim function. jQuery, rightly, uses function detection and if they don't exist, uses it's implementation. Unfortunately, MSAJax's implementation of trim doesn't strip char 160 (non breaking space).

问题 I already have data I scraped from a web table and I've noticed some leading spaces and nbsp in some entries. I realize I should have cleaned the data while scraping before inserting it into MySQL but it was a while ago and I don't feel like repeating the process if I don't have to. I came up with this PHP script (late) last night and it works up until I try to update the entries. <?php require_once("login.php"); $db_server = mysql_connect($db_hostname, $db_username, $db_password); if (!$db

问题 Can anyone please tell how to trim the video using UIVideoEditorController? 来源： https://stackoverflow.com/questions/4130996/trimming-the-video-using-uivideoeditorcontroller

问题 I have a column of data with this date format mm/dd/yyyy . I would like to covert to this to the format yyyy-mm-dd for (SQLite usage). How could I achieve this? UPDATE Table_Name SET Column_Name = 'yyyy-mm-dd' format I have tried substr, ltrim, rtrim (None of this work for my case). My data are dynamic. Sample Column_Name 6/1/2004 06/25/2004 7/1/2003 6/1/2004 6/1/2004 09/19/2003 09/30/2003 09/30/2003 09/30/2003 09/30/2003 The Goal: Extract only month from this Column (Without displaying

问题 I have a column of data with this date format mm/dd/yyyy . I would like to covert to this to the format yyyy-mm-dd for (SQLite usage). How could I achieve this? UPDATE Table_Name SET Column_Name = 'yyyy-mm-dd' format I have tried substr, ltrim, rtrim (None of this work for my case). My data are dynamic. Sample Column_Name 6/1/2004 06/25/2004 7/1/2003 6/1/2004 6/1/2004 09/19/2003 09/30/2003 09/30/2003 09/30/2003 09/30/2003 The Goal: Extract only month from this Column (Without displaying

问题 I'm trying to create a web application which requires this feature: Suppose I have a .mp3 file, I want to select/upload this file, and then, make a new file of it from 0:15 to 0:30 (example), and then save as new .mp3/.wav. As it's supposed to go on web, would be preferrable in PHP, but as I highly doubt it's possible, Java(Applets) or C#(ASP.NET) are acceptable and highly appreciated. Thanks in advance. 回答1: The best way to do this is with FFMPEG. There is a PHP extension for it, but I've

问题 I need a PHP function that will count the number of characters of a phrase. If the phrase is longer than "140" character then this function should delete all the other character and add three points at then end of the phrase. So for example we have. $message= "I am what I am and you are what you are etc etc etc etc" IF this is longer than 140 characters, then $message= "I am what I am and you are what you are..." Is this possible? How? Thank you 回答1: if(strlen($str) > 140){ $str = substr($str

问题 I want to hide all the <li> if they are empty or if there any blank space in <li> . I am doing it like this: $("li:empty").filter(function(i,v){return $.trim($(v).text()).length == 0;}).css('display', 'none'); Is this the wrong syntax? If I create a class to make empty <li> invisible, it works fine. Like this: $("li[class='hideLi']").filter(function(i,v){return $.trim($(v).text()).length == 0;}).css('display', 'none'); But I don't know which <li> will be empty . Can anybody help me plz. I