trim

问题 HI, I have an input field in which I want to trim any leading/trailing whitespaces. We are using JSF and binding the input field to a backing bean in the jsp using: <h:inputText id="inputSN" value="#{regBean.inputSN}" maxlength="10"/> My question is that besides validation can this be done in the jsp? I know we can also do this using the trim() java function in the Handler, but just wondering if there is a more elegant way to achieve this in JSF. Thanks. 回答1: You could use a Converter

问题 In VB6, the Trim() function trims spaces off the front and back of a string. I am wondering if there is a function that will trim not just spaces, but all whitespace (tabs in this case) off of each end of a string. 回答1: You'll have to combine the Trim function with the Replace function: s = " ABC " & vbTab & " " MsgBox Len(s) MsgBox Len(Trim$(s)) s = Replace$(Trim$(s), vbTab, "") MsgBox Len(s) Note: The above code will also remove embedded tabs. Probably can resolve this with regular

问题 I have the following code: program main character (len=15) :: abc = "te st tex t" print *, trim(abc) end program main Which outputs: te st tex t I excepted all the whitespace to be removed but it wasn't. How can I remove all the whitespace from the string? 回答1: Trim will remove spaces only at the edges, not in the middle (this is common behaviour on almost all languages/libraries). If you want to remove all spaces in the string, you will have to create your own function to do this, iterating

问题 Play will assign the parameters from request to action parameters, like: public static void createArticle(String title, String content) { } But it won't trim them, so we usually to such code in the actions: public static void createArticle(String title, String content) { if(title!=null) title = title.trim(); if(content!=null) content = content.trim(); } Is there any way to let play trim them automatically? 回答1: There are multiple ways to achive this with custom binders. One way of doing would

问题 I need to split a keyword string and turn it into a comma delimited string. However, I need to get rid of extra spaces and any commas that the user has already input. var keywordString = "ford tempo, with,,, sunroof"; Output to this string: ford,tempo,with,sunroof, I need the trailing comma and no spaces in the final output. Not sure if I should go Regex or a string splitting function. Anyone do something like this already? I need to use javascript (or JQ). EDIT (working solution): var

问题 I'm using http://rockycode.com/blog/jquery-plugin-readmore/ for trim long text and add a "See more" link to reveal all the text. I would love to avoid cutting words, how could I do that? If the limit is 35, don't cut the w... but If the limit is 35, don't cut the word... (and in this case, trim it at 38 and then show the hidden text from 39th chtill the end. 回答1: You can change the abridge function within that plugin as follows: function abridge(elem) { var opts = elem.data("opts"); var txt =

问题 I'm beginner on Python and Spark. After creating a DataFrame from CSV file, I would like to know how I can trim a column. I've try: df = df.withColumn("Product", df.Product.strip()) df is my data frame, Product is a column in my table But I see always the error: Column object is not callable Do you have any suggestions? 回答1: Starting from version 1.5 , Spark SQL provides two specific functions for trimming white space, ltrim and rtrim (search for "trim" in the DataFrame documentation); you'll

问题 UPDATE mytable SET mycolumn= LTRIM(RTRIM(mycolumn)); works fine on trimming columns removing trailer spaces, but how can i adjust it to trim all columns without having to write each column name in table ?? cause i kind have a huge database. 回答1: Some years late, but might help others: This code trims all fields of a the table "your_table". Could be expanded to work on the whole database in the same way.... SET SESSION group_concat_max_len = 1000000; select concat('update your_table set '

问题 I asked a question earlier but met harsh criticism, so here I pose it again. Simpler, and rephrased to appeal to those who may have been concerned about the way I asked it before. BACKGROUND I am parsing some HTML for information. I have isolated everything in a series of lines but the content I wish to grab and a bunch of spaces after it. To get rid of the spaces, I opted to use trim(), but I have been having trouble. The last few lines of my code are tests: System.out.println("'" +

问题 How do you trim whitespace from the start and end of a string? trim " abc " => "abc" Edit: Ok, let me be a little clearer. I did not understand that string literals were treated so differently from Strings. I would like to do this: import qualified Data.Text as T let s :: String = " abc " in T.strip s Is this possible in Haskell? I am using -XOverloadedStrings but that appears only to work for literals. 回答1: If you have serious text processing needs then use the text package from hackage: >