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• linux + find word/string in file under directory

  - by yael

  I have the following command find /var -type f -exec grep "param1" {} \; -print With this command I can find the param1 string in any file under /var but the time that it take for this is very long -? I need other possibility to find string in file but much more faster then my example THX yael

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• Working with strings in C++

  - by Elliot Bonneville

  Hi. I'm working with strings in C++. I recently came across a problem when entering strings. I'm using cin >> string; to get my string as user input. When the user enters a space into the string, the next input is automatically filled out with the remaining letters, or sometimes left blank. As the next input string is often an integer, this will result in an unpleasant bug. What's a good fix for this?

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• Creating get/set method dynamically in javascript

  - by portoalet

  I am trying to create a UserDon object, and trying to generate the get and set methods programmatically ( based on Pro Javascript book by John Resig page 37 ), and am testing this on Firefox 3.5 The problem is: in function UserDon, "this" refers to the window object instead of the UserDon object. So after calling var userdon = new UserDon(...) I got setname and getname methods created on the window object (also setage and getage). How can I fix this? function UserDon( properties ) { for( var i in properties ) { (function(){ this[ "get" + i ] = function() { return properties[i]; }; this[ "set" + i ] = function(val) { properties[i] = val; }; })(); } } var userdon = new UserDon( { name: "Bob", age: 44 });

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• Please help get this msdn function working to create an auto complete method

  - by Phil

  Here is a method from msdn to provide data to an autocomplete extender / textbox: <System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()> _ Public Shared Function GetCompletionList(ByVal prefixText As String, ByVal count As Integer, ByVal contextKey As String) As String() ' Create array of movies Dim movies() As String = {"Star Wars", "Star Trek", "Superman", "Memento", "Shrek", "Shrek II"} ' Return matching movies Return From m In movies(6) Where _ (m.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase)) Select m).Take(count).ToArray() End Function The errors are: m.StartsWith - ('Startswith' is not a member of 'Char') Select m - ('Select Case' must end with a matching end select) .Take(count).ToArray() - (End of statement expected) Can you please let me know how to get this function working? Thanks

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• Javascript replace

  - by Webby

  Hello struggling here guys.. Is it possible to string replace anything between the the first forward slashes with "" but keep the rest? e.g. var would be string "/anything-here-this-needs-to-be-replaced123/but-keep-this"; would end up like this string "/but-keep-this"; Hope that made sence

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• Is it safe to use random Unicode for complex delimiter sequences in strings?

  - by ccomet

  Question: In terms of program stability and ensuring that the system will actually operate, how safe is it to use chars like ¦, § or ‡ for complex delimiter sequences in strings? Can I reliable believe that I won't run into any issues in a program reading these incorrectly? I am working in a system, using C# code, in which I have to store a fairly complex set of information within a single string. The readability of this string is only necessary on the computer side, end-users should only ever see the information after it has been parsed by the appropriate methods. Because some of the data in these strings will be collections of variable size, I use different delimiters to identify what parts of the string correspond to a certain tier of organization. There are enough cases that the standard sets of ;, |, and similar ilk have been exhausted. I considered two-char delimiters, like ;# or ;|, but I felt that it would be very inefficient. There probably isn't that large of a performance difference in storing with one char versus two chars, but when I have the option of picking the smaller option, it just feels wrong to pick the larger one. So finally, I considered using the set of characters like the double dagger and section. They only take up one char, and they are definitely not going to show up in the actual text that I'll be storing, so they won't be confused for anything. But character encoding is finicky. While the visibility to the end user is meaningless (since they, in fact, won't see it), I became recently concerned about how the programs in the system will read it. The string is stored in one database, while a separate program is responsible for both encoding and decoding the string into different object types for the rest of the application to work with. And if something is expected to be written one way, is possibly written another, then maybe the whole system will fail and I can't really let that happen. So is it safe to use these kind of chars for background delimiters?

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• Dynamically formatting a string

  - by TofuBeer

  Before I wander off and roll my own I was wondering if anyone knows of a way to do the following sort of thing... Currently I am using MessageFormat to create some strings. I now have the requirement that some of those strings will have a variable number of arguments. For example (current code): MessageFormat.format("{0} OR {1}", array[0], array[1]); Now I need something like: // s will have "1 OR 2 OR 3" String s = format(new int[] { 1, 2, 3 }); and: // s will have "1 OR 2 OR 3 OR 4" String s = format(new int[] { 1, 2, 3, 4 }); There are a couple ways I can think of creating the format string, such as having 1 String per number of arguments (there is a finite number of them so this is practical, but seems bad), or build the string dynamically (there are a lot of them so this could be slow). Any other suggestions?

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• Double.Parse - Internationalization problem

  - by oz

  This is driving me crazy. I have the following string in a ASP.NET 2.0 WebForm Page string s = "0.009"; Simple enough. Now, if my culture is Spanish - which is "es-ES" - and I try to convert the string to Double, I do the following: double d = Double.Parse(s, new CultureInfo("es-ES")); what I'd expect is 0,009. Instead, I get 9. I understand that .NET thinks it is a thousand separator, which in en-US is a comma, but shouldn't it take the culture info I'm passing to the parse method and apply the correct format to the conversion? If I do double d = 0.009D; string formatted = d.ToString(new CultureInfo("es-ES")); formatted is now 0,009. Anybody?

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• json object composition details

  - by Ethan

  in .json text, is the 'value' in a basic single pair object the title of a value type (e.g. [string, number, object]), or a value for a typed object (e.g. 2, or "dog", or Object3)? This is how http://www.json.org/ presents the information: "An object is an unordered set of name/value pairs. An object begins with { (left brace) and ends with } (right brace). Each name is followed by : (colon) and the name/value pairs are separated by , (comma)."

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• How to overwrite specific lines on text files

  - by iTayb

  I have two text files. I'd like to copy a specific part in the first text file and replace it with a part of the second text file. This is how I read the files: List<string> PrevEp = File.ReadAllLines(string.Format(@"{0}naruto{1}.ass", url, PrevEpNum)).ToList(); List<string> Ep = File.ReadAllLines(string.Format(@"{0}naruto{1}.ass", url, EpNum)).ToList(); The part in PrevEp that I need: from the start until it meets a line that includes Creditw,,0000,0000,0000. The part I would like to overwrite in Ep: from the start to a line which is exactly Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text. I'm not so sure how may I do it. Could you lend me a hand? Thank you very much, gentlemen.

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• String Constant Pool memory sector and garbage collection

  - by WickeD

  I read this question on the site How is the java memory pool divided? and i was wondering to which of these sectors does the "String Constant Pool" belongs? And also does the String literals in the pool ever get GCed? The intern() method returns the base link of the String literal from the pool. If the pool does gets GCed then wouldn't it be counter-productive to the idea of the string pool? New String literals would again be created nullifying the GC. (It is assuming that only a specific set of literals exist in the pool, they never go obsolete and sooner or later they will be needed again)

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• how to change string values in dictionary to int values

  - by tom smith

  I have a dictionary such as: {'Sun': {'Satellites': 'Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune,Ceres,Pluto,Haumea,Makemake,Eris', 'Orbital Radius': '0', 'Object': 'Sun', 'RootObject': 'Sun', 'Radius': '20890260'}, 'Earth': {'Period': '365.256363004', 'Satellites': 'Moon', 'Orbital Radius': '77098290', 'Radius': '63710.41000.0', 'Object': 'Earth'}, 'Moon': {'Period': '27.321582', 'Orbital Radius': '18128500', 'Radius': '1737000.10', 'Object': 'Moon'}} I am wondering how to change just the number values to ints instead of strings. def read_next_object(file): obj = {} for line in file: if not line.strip(): continue line = line.strip() key, val = line.split(": ") if key in obj and key == "Object": yield obj obj = {} obj[key] = val yield obj planets = {} with open( "smallsolar.txt", 'r') as f: for obj in read_next_object(f): planets[obj["Object"]] = obj print(planets)

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• How do i delete an empty array of objects?

  - by dimitar

  Hello guys, i define an object: tempRes = new Object[100000][7]; now after that i fill it up till 100 rows for example. Now how to delete every object past that(from tempRes[100] too tempRes[10000]). I need this for a JTable.

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• Expression.Call() to String.Equals() throws error

  - by Sam

  The following code: var constant = Expression.Constant("find me", typeof(string)); // memberExpression evaluates to a string var predicate = Expression.Call(memberExpression, "Equals", null, constant); is throwing the error More than one method 'Equals' on type 'System.String' is compatible with the supplied arguments. I'm guessing that's because there's Equals(Object) and Equals(String) - is there any way for me to specify which method I mean to use via the overload of Expression.Call() that takes an instance method name as a string? Or do I have to make a special case for calls to Equals() to take a MethodInfo instead?

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• Split with token info

  - by boomhauer

  I would like to split a string using multiple chars to split upon. For example, consider spin text format: This is a {long|ugly|example} string I would want to parse this string and split it on the "{", "|", and "}" chars myString.Split('|','{','}') Now I have tokens to play with, but what I would like is to retain the info about which char was used to split each piece of the array that is returned. Any existing code that can do something like this?

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• Nhibernate ValueType Collection as delimited string in DB

  - by JWendel

  Hi I have a legacy db that I am mapping with Nhibernate. And in several locations a list och strigs or domain objects are mapped as a delimited string in the database. Either 'string|string|string' in the value type cases and like 'domainID|domainID|domainID' in the references type cases. I know I can create a dummy property on the class and map to that fields but I would like to do it in a more clean way, like when mapping Enums as their string representation with the EnumStringType class. Is a IUserType the way to go here? Thanks in advance /Johan

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• In a class with no virtual methods or superclass, is it safe to assume (address of first member vari

  - by Jeremy Friesner

  Hi all, I made a private API that assumes that the address of the first member-object in the class will be the same as the class's this-pointer... that way the member-object can trivially derive a pointer to the object that it is a member of, without having to store a pointer explicitly. Given that I am willing to make sure that the container class won't inherit from any superclass, won't have any virtual methods, and that the member-object that does this trick will be the first member object declared, will that assumption hold valid for any C++ compiler, or do I need to use the offsetof() operator (or similar) to guarantee correctness? To put it another way, the code below does what I expect under g++, but will it work everywhere? class MyContainer { public: MyContainer() {} ~MyContainer() {} // non-virtual dtor private: class MyContained { public: MyContained() {} ~MyContained() {} // Given that the only place Contained objects are declared is m_contained // (below), will this work as expected on any C++ compiler? MyContainer * GetPointerToMyContainer() { return reinterpret_cast<MyContainer *>(this); } }; MyContained m_contained; // MUST BE FIRST MEMBER ITEM DECLARED IN MyContainer int m_foo; // other member items may be declared after m_contained float m_bar; };

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• Replace text in string with delimeters using Regex

  - by user1057735

  I have a string something like, string str = "(50%silicon +20%!(20%Gold + 80%Silver)| + 30%Alumnium)"; I need a Regular Expression which would Replace the contents in between ! and | with an empty string. The result should be (50%silicon +20% + 30%Alumnium). If the string contains something like (with nested delimiters): string str = "(50%silicon +20%!(80%Gold + 80%Silver + 20%!(20%Iron + 80%Silver)|)| + 30%Alumnium)"; The result should be (50%silicon +20% + 30%Alumnium) - ignoring the nested delimiters. I've tried the following Regex, but it doesn't ignore the nesting: Regex.Replace(str , @"!.+?\|", "", RegexOptions.IgnoreCase);

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• How to reverse a string?

  - by WM

  Example : hi how are you; output : you are how hi; but wrote this code and im stuck not knowing how to put a string into an array and reverse it..? public class Reverse { public static void main(String[] args) { Scanner text = new Scanner(System.in); System.out.print("Enter your Text : "); String input = text.nextLine(); Scanner text2 = new Scanner(text.nextLine()); String[] array = new String[] ; int i; for(i = 0; i < input.length(); i++) { array[i] = input;

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• get all words using java

  - by hussain

  i want to know how to get all word using java String first[]={"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"}; String second[]={"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"}; String ch =""; String total[]; for(int i = 0;i<26;i++) { for(int j = 0;j<26;j++) { ch+=first[i]+first[j]; System.out.println(ch); } } i get only 576 words only by this program but the 26! words is 4.03291461 × 1026 how to write the program in java thanks and advance

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• How can I remove all the files which has a string in a file

  - by michael

  Hi, I am trying to remove all the files in a directory hierarchy which a certain string inside the file (not the file name, it is the file content). I can list out all the file name which has a string in the file using 'grep -r -l mystringlooking for'. But how can I remove all the files returned by the grep ? I am trying this on ubuntu. Thank you.

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• turning text into image - PHP/GD - save image

  - by Phil Jackson

  Hi, I'm using this script to simply create an image from text. What I would like to know is how to save the image instead of printing straight to browser; // an email address in a string $string = $post[$key]; // some variables to set $font = 4; $width = ImageFontWidth($font) * strlen($string); $height = ImageFontHeight($font); // lets begin by creating an image $im = @imagecreatetruecolor ($width,$height); //white background $background_color = imagecolorallocate ($im, 255, 255, 255); //black text $text_color = imagecolorallocate ($im, 0, 0, 0); // put it all together $image = imagestring ($im, $font, 0, 0, $string, $text_color); I know its probably just one line of code at the end but im not sure which GD function to use. Any help would be much appreciated, Regards, Phil.

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• strtod() and sprintf() inconsistency under GCC and MSVC

  - by Dmitry Sapelnikov

  I'm working on a cross-platform app for Windows and Mac OS X, and I have a problem with two standard C library functions: strtod() - string-to-double conversion sprintf() - when used for outputting double-precision floating point numbers) Their GCC and MSVC versions return different results. I'm looking for a well-tested cross-platform open-source implementation of those functions, or just for a pair of functions that would correctly and consistently convert double to string and back. I've already tried the clib GCC implementation, but the code is too long and too dependent on other source files, so I expect the adaptation to be difficult. What implementations of string-to-double and double-to-string functions would you recommend?

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• Translate from Java to C#: simple code to re-encode a string

  - by Dr. Zim

  We were sent this formula to encrypt a string written in Java: String myInput = "test1234"; MessageDigest md = MessageDigest.getInstance("SHA"); byte[] myD = md.digest(myInput.getBytes()); BASE64Encoder en64 = new BASE64Encoder(); String myOutput = new String ( Java.net.URLEncoder.encode( en64.encode(myD))); // myOutput becomes "F009U%2Bx99bVTGwS3cQdHf%2BJcpCo%3D" Our attempt at writing this in C# is: System.Security.Cryptography.SHA1 sha1 = new System.Security.Cryptography.SHA1CryptoServiceProvider(); string myOutput = HttpUtility.UrlEncode( Convert.ToBase64String( sha1.ComputeHash( ASCIIEncoding.Default.GetBytes(myInput)))); However the output is no where near the same. It doesn't even have percent signs in it. Any chance anyone would know where we are going wrong?

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• Is there a generic way of dealing with varying connection strings in C#?

  - by James Wiseman

  I have an application that needs to connect to a SQL database, and execute a SQL Agent Job. The connection string I am trying to access is stored in the registry, which is easily enough pulled out. This appliction is to be run on multiple computers, and I cannot guarantee the format of this connection string being consistent across these computers. Two that I have pulled out for example are: Data Source=Server1;Initial Catalog=DB1;Integrated Security=SSPI; Data Source=Server2;Initial Catalog=DB1;Provider=SQLNCLI.1;Integrated Security=SSPI;Auto Translate=False; I can use an object of type System.Data.SqlClient.SqlConnection to connect to the database with the first connection string, howevever, I get the following error when I pass the second to it: keyword not supported: 'provider' Similarly, I can use the an object of type System.Data.OleDb.OleDbConnection to connect to the database with the second connection string, howevever, I get the following error when I pass the first to it: An OLEDB Provider was not specified in the ConnectionString' I can solve this by scanning the string for 'Provider' and doing the connect conditionally, however I can't help but feel that there is a better way of doing this, and handle the connection strings in a more generic fashion. Does anyone have any suggestions?

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