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• What is the fastest way to count newlines in a .NET string?

  - by Cheeso

  Is there a way to improve this: private static int CountNewlines(string s) { int len = s.Length; int c = 0; for (int i=0; i < len; i++) { if (s[i] == '\n') c++; } return c; } I'm particularly concerned about the Item accessor on the string. Not sure if it is just pointer arithmetic like C/C++.

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• How can I trim certain characters from a string in sql?

  - by Matt

  I would like to trim all special characters from a string in SQL. I've seen a bunch of people who use substring methods to remove a certain amount of characters, but in this case the length on each side of the string is unknown. Anyone know how to do this? Thanks, Matt

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• How do I pass a string or data object between two view controllers?

  - by Jonathan

  In my last question i asked how to best send a string from one view controller to another, both which were on a navigation stack: http://stackoverflow.com/questions/2898860/pass-string-from-tableviewcontroller-to-viewcontroller-in-navigation-stack However I just realised I can either pass the path to the file in the app's document's folder as the first (the table view) has already accessed the data in the file should I pass viewcontroller the data to the pushed VC?

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• how to convert char array in C to string in C++?

  - by tsubasa

  i have a string in C: char cs[10] = "hello"; i wanna convert into string in C++. Anybody could help? Thanks much.

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• PHP - How to remove the first number in a string?

  - by Dodi300

  Hello. How can I remove the first number in a string? Say if I had these 48 numbers seperated with a ',' (comma): 8,5,8,10,15,20,27,25,60,31,25,39,25,31,26,28,80,28,27,31,27,29,26,35,8,5,8,10,15,20,27,25,60,31,25,39,25,31,26,28,80,28,27,31,27,29,26,35 How would I remove the "8," from the string? Thanks.

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• I'm writing a spellchecking program, how do I replace ch in a string?

  - by Ajay Hopkins

  What am I doing wrong/what can I do? import sys import string def remove(file): punctuation = string.punctuation for ch in file: if len(ch) > 1: print('error - ch is larger than 1 --| {0} |--'.format(ch)) if ch in punctuation: ch = ' ' return ch else: return ch ref = (open("ref.txt","r")) test_file = (open("test.txt", "r")) dictionary = ref.read().split() file = test_file.read().lower() file = remove(file) print(file) This is in Python 3.1.2

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• String Manipulation in Bash . . . Removing leading section

  - by Kyle Van Koevering

  This is probably a really stupid question...but how can I remove parts of a string up to a certain character? Ex.) If I have the string testFile.txt.1 and testFile.txt.12345 how can I remove the 1 and 12345? Thanks a lot for the help

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• Java Regular Expression. Check if String contains ONLY Letters

  - by user69514

  How do I check if a String contains only letters in java? I want to write an if statement that will return false if there is a white space, a number, a symbol or anything else other than a-z A-Z. My string must contain ONLY letters. I thought I could do it this way, but I'm doing it wrong: if( ereg("[a-zA-Z]+", $myString)) return true; else return false;

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• About to migrate :string but I'm thinking :text might be better. Performance/Purpose?

  - by Sam

  class CreateScrapes < ActiveRecord::Migration def self.up create_table :scrapes do |t| t.text :saved_characters t.text :sanitized_characters t.string :href t.timestamps end end def self.down drop_table :scrapes end end I'm about to rake db:migrate and I'm think about the attribute type if I should be using text or string. Since saved_characters and sanitized_characters will be arrays with thousands of unicode values, its basically comma delimited data, I'm not sure if `:text' is really the right way to go here. What would you do?

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• Java: method to get position of a match in a String?

  - by HH

  String match = "hello"; String text = "0123456789hello0123456789"; int position = getPosition(match, text); // should be 10, is there such a method?

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• im writing a spellchecking program, how do i replace ch in a string..eg..

  - by Ajay Hopkins

  what am i doing wrong/what can i do?? import sys import string def remove(file): punctuation = string.punctuation for ch in file: if len(ch) > 1: print('error - ch is larger than 1 --| {0} |--'.format(ch)) if ch in punctuation: ch = ' ' return ch else: return ch ref = (open("ref.txt","r")) test_file = (open("test.txt", "r")) dictionary = ref.read().split() file = test_file.read().lower() file = remove(file) print(file) p.s, this is in Python 3.1.2

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• Converting an int to a binary string representation in Java?

  - by ttreat31

  What would be the best way (ideally, simplest) to convert an int to a binary string representation in Java? For example, say the int is 156. The binary string representation of this would be "10011100".

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• When does the difference between a string and a number matter in Perl 5?

  - by Chas. Owens

  If a string in Perl 5 passes looks_like_number, it might as well be a number. For instance, my $s = "10" + 5; results in $s being assigned 15. Are there any cases where a string does not behave like it's numeric equivalent would have?

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• In Android OS or Java, what's the difference between a character sequence and a string????

  - by K-RAN

  For the API (Android SDK API version 8) functions whose definitions list character sequence parameters, I can feed the function String instead. Best part is that they work the same way, no hassle, no warnings. Is there a difference between the two types? And more importantly, is there an inherent danger if I send the function a String instead of a character sequence??? Thanks for any clarifications!!! :D

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• C# is there a simple to know if my connection string is encrypt or not?

  - by 5YrsLaterDBA

  I want to know if my connection string is encrypted or not. I don't want to encrypt it again and again. This is only an issue in development stage. Any way to check the status of the connection string in App.config?

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• String replacement on a whole text file in Python 3.x?

  - by SkippyFire

  How can I replace a string with another string, within a given text file. Do I just loop through readline() and run the replacement while saving out to a new file? Or is there a better way? I'm thinking that I could read the whole thing into memory, but I'm looking for a more elegant solution... Thanks in advance

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• How to convert a string of ints Eg 45 34 21 22 into int's and store them in an array ? in C programm

  - by Srinivasa Varadan

  Hi , I have a string val = "14 22 33 48"; int matrix[5]; I need to insert each of the values in the string into the respective location in the array Eg: matrix[0] = 14; matrix[1] = 22; matrix[2] = 33; matrix[3] = 48; How do I do this ?

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• C: How to convert a string of ints into actual ints and store them in an array?

  - by Srinivasa Varadan

  I have a string "14 22 33 48". I need to insert each of the values in the string into the respective location in the array: int matrix[5]; so that matrix[0] = 14; matrix[1] = 22; matrix[2] = 33; matrix[3] = 48; How do I do this?

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• How to make a valid string for XML in JavaScript?

  - by MartyIX

  I'm looking for a function to convert a string to the xml string with xml entities where needed. Something like htmlentities in PHP but for XML and in Javascript. Thank you for any help!

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• Sorting mysql array value after string chars swapped from fetched DB data.

  - by Shail Patel

  I want to sort one column fetched from mysql DB, and stored in an array. After fetching I am doing below steps. 1- DB Fetching fields array in row format. ->Field1, Field2, Field3, Field4, Field5 2- From that fields array One columns data [Field3], swapping string keywords. eg. AB013, DB131, RS001 to->013AB, 131DB, 001RS Now I want to sort above value in new string format like-> 001RS, 013AB, 131DB

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• How to check if String value is Boolean type in Java?

  - by Ragnar

  I did a little search on this but couldn't find anything useful. The point being that if String value is either "true" or "false" the return value should be true. In every other value it should be false. I tried these: String value = "false"; System.out.println("test1: " + Boolean.parseBoolean(value)); System.out.println("test2: " + Boolean.valueOf(value)); System.out.println("test3: " + Boolean.getBoolean(value)); All functions returned false :(

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• How to get a char* pointer to a C++ string?

  - by cambr

  I have a C++ string. I need to pass this string to a function accepting char* parameter, for example - strchr(). a) How do I get that pointer? b) Is there some funtion equivalent to strschr() that works for C++ strings?

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• C# How do I split a string by strings and include the delimiters?

  - by mafutrct

  There are many similar questions, but apparently no perfect match, that's why I'm asking. I'd like to split a random string (e.g. 123xx456yy789) by a list of string delimiters (e.g. xx, yy) and include the delimiters in the result (here: 123, xx, 456, yy, 789). Good performance is a nice bonus. Regex should be avoided, if possible.

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• In Java, is there a way to write a string literal without having to escape quotes?

  - by Matthew

  Say you have a String literal with a lot of quotation marks inside it. You could escape them all, but it's a pain, and difficult to read. In some languages, you can just do this: foo = '"Hello, World"'; In Java, however, '' is used for chars, so you can't use it for Strings this way. Some languages have syntax to work around this. For example, in python, you can do this: """A pretty "convenient" string""" Does Java have anything similar?

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• Please give me an example where strings are usefull than string builder

  - by DJay

  Lot of questions has been already asked about the differences between string and string builder and most of the people suggest that string builder is faster than string. I am curious to know if string builder is too good so why string is there? Moreover, can some body give me an example where string will be more usefull than string builder?

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