string-length

问题 I have code that currently does something like the following: ofstream fout; fout.open("file.txt"); fout<<"blah blah "<<100<<","<<3.14; //get ofstream length here fout<<"write more stuff"<<endl; Is there a convenient way to find out the length of that line that is written at the stage I specified above? (in real life, the int 100 and float 3.14 are not constant and can change). Is there a good way to do what I want? EDIT: by length, I mean something that can be used using fseek, e.g. fseek

问题 I'm making the transition from VB6 to VB.Net (VS 2010) and have a basic rather than expansive understanding of the latter. I obviously have quite a bit of code to... I hesitate to use the word "upgrade" when "port" would be more apt given that the upgrade wizard in past versions of VS may as well have just commented out the code and said "Hey, why don't you re-start from scratch?" In one procedure which I'm bringing across the Len() function was used to determine the length of a string

问题 I'm trying to adjust title sizes depending on character length. (wordpress) This is what I have so far. It doesn't return any error but it doesn't work. jQuery(function ($) { $(window).load(function () { var textLength = $('.autotitle').val().length; if (textLength < 20) { // Do noting } else if (textLength > 20) { $('.autotitle').css('font-size', '16px'); } }); }); 回答1: Many times one would like to decrease font size (make it smaller) when text is long based on letter count (text might have

问题 I am converting C++ codes from Linux to windows (using Visual Studio 2013). But MSVC has length limit on string (around 2048 bytes?), the GCC doesn't instead. My problem is that, there is a config file containing several huge string, it works well under GCC. But MSVC reports compile error as error C2026: string too big, trailing characters truncated. The string is quite simple, CONFIGSTRING is huge. const std::string CONFIGSTRING="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; Any solution for this problem

问题 alldp charcter varraying "K409,K358,K353,L059,R100,L050,K610,K352,K429,C181,D129,K565,T8558,K560,K402,A045,K661,I841,I848,Z433" I can count them. here is 20. But if I want to write a statement in Postgres to get 20, how should I do? 回答1: You can split the string into an array and then count the elements in the resulting array: select array_length(string_to_array(the_column, ','), 1) from the_table; But you should really consider fixing your data model. Storing comma separated values in a

问题 I am returning a static string from a stored procedure (in SQL Server 2008) as below: select 'abcdefgh.........xyz' If the static string length is exceeding more than some limit (eg:8kb) then only partial string (eg:7kb) is returned to the .net apps. Though I tried in different ways like assigning static string to varchar(max) and selecting the variable, is still returning only partial string. I should return complete string which could be of max of 5mb. So, main concerns: What is the max

问题 Here's what I am trying to do, but failing miserably: I am trying to retrieve address from a column that is 12000+ characters long. Lucky for me, I can locate the address line1 through XML tag: <PermanentAddress> <AddressLine><![CDATA[1234 1st street]]></AddressLine> <City> Here's what I have done so far: select substring(PC.css_record, CHARINDEX('<AddressLine>', PC.css_record)+ 21, CHARINDEX('</AddressLine>', PC.css_record)) from table1 I tried squeezing length function in there too to

问题 This question already has answers here : Split string with dot as delimiter (13 answers) Closed 5 years ago . This is probably a very easy question but I'm going to give you the code first. import java.util.Scanner; public class help { public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.print("Give: "); String s = sc.next(); String[] parts = s.split("."); System.out.println(parts.length); } } Even if I give 192.168.1.1.1.1.1 or 1.2.3 or ... the parts

问题 I was testing this code submitted by unclemeat in this question(UncleMeat referenced this site) when I tested it by inputting some carots( ^ ) it produced some interesting results. Len.bat @echo off setLocal EnableDelayedExpansion set s=%1 set length=0 :count if defined s ( set s=%s:~1% set /A length += 1 goto count ) echo %length% Testing of Len.bat C:\Users\Public>len ^ More? More? 0 C:\Users\Public>len ^^ 12 C:\Users\Public>len ^^^ More? More? 12 C:\Users\Public>len ^^^^ 1 C:\Users\Public

问题 I am trying to get the string lengths for different columns. Seems quite straightforward with: df['a'].str.len() But I need to apply it to multiple columns. And then get the minimum on it. Something like: df[['a','b','c']].str.len().min I know the above doesn't work, but hopefully you get the idea. Column a , b , c all contain names and I want to retrieve the shortest name. Also because of huge data, I am avoiding creating other columns to save on size. 回答1: I think you need list