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• Best Practice to write Connection string for heavy traffic ASP.NET Web Application

  - by hungrycoder

  What is the best way to define connection string for a web application that has minimum 500 live users on the internet in terms of connection pooling. And load factors to consider? Suppose I have connection string as follows: initial catalog=Northwind; Min Pool Size=20;Max Pool Size=500; data source=localhost; Connection Timeout=30; Integrated security=sspi" as Max Pool Size is 500 and as live users exceed 500 say 520 will the remaining 20 users experience slower page load?? Or what if I have connection string as follows which doesn't talks anything about pooling or Connection time out? How the application behaves then? initial catalog=Northwind; data source=localhost; Integrated security=sspi" I'm using "Using statements" however to access the MYSQL database.

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• Reading ASCII numbers using "D" instead of "E" for scientific notation using C

  - by Arrieta

  Hello, I have a list of numbers which looks like this: 1.234D+1 or 1.234D-02. I want to read the file using C. The function atof will merely ignore the D and translate only the mantissa. The function fscanf will not accept the format '%10.6e' because it expects an E instead of a D in the exponent. When I ran into this problem in Python, I have up and merely used a string substitution before converting from string to float. But in C, I am sure there must be another way. So, how would you read a file with numbers using D instead of E for scientific notation? Notice that I do not mean how to read the strings themselves, but rather how to convert them to floats. Thanks.

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• Join collection of objects into comma-separated string

  - by Helen Toomik

  In many places in our code we have collections of objects, from which we need to create a comma-separated list. The type of collection varies: it may be a DataTable from which we need a certain column, or a List<Customer>, etc. Now we loop through the collection and use string concatenation, for example: string text = ""; string separator = ""; foreach (DataRow row in table.Rows) { text += separator + row["title"]; separator = ", "; } Is there a better pattern for this? Ideally I would like an approach we could reuse by just sending in a function to get the right field/property/column from each object.

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• I-Phone: Trying to check an Array for an item based on a string produced

  - by MB

  Hello! I'm writing a program that will concatenate a string based on letters, and then check an array to see if that string exists. If it does, then it will print a line in IB saying so. I've got all the ins-and-outs worked out, save for the fact that the simulator keeps crashing on me! Here's the code: -(IBAction)checkWord:(id)sender { NSMutableArray *wordList = [NSMutableArray arrayWithObjects:@"BIKE", @"BUS", @"BILL", nil]; if([wordList containsObject:theWord]) { NSString *dummyText = [[NSString alloc] initWithFormat:@"%@ is a real word.", theWord]; checkText.text = dummyText; [dummyText release]; } } "theWord" is the string that is being referenced against the Array to see if it matches an item contained within it. In this case "BIKE" is 'theWord'. Thank you for your help in advance! -MB

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• Castle Windsor config pointing to connectionStrings section in web.config

  - by Georgia Brown

  I want to inject a connection string into my repository but ideally, I want this connection string to be in my web.config connectionStrings section rather than in my windsor config. Is this possible? I know I can use the fluent interface and achieve this easily but my bosses want an xml config file. I also know that I can define a property and use that in my windsor config to pass the parameter in, but I have other code that reads the connectionstring from the web.config directly and do not really want two places with the same connectionString.

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• PHP array manipulation

  - by user295189

  I have the code below . it looks for the case and creates an array of rows and columns. $pv->results[$row1][1][0] actually is $pv->result->[rownumber][coulmnnumber][0]. Now this is for only 2 columns as you can see. However I want an array like $myArr = array(0=>1, 1=>7, 2=>8, 3=>9 ) to be added below for column. What it is doing, is adding 4 columns (0,1,2,3) into the code below. So now I will have 4 cases instead of 2 cases as I need to more columns. Also the case value will not be 1 and 2, it will be 1, 7, 8 and 9 respectively. How can I do that? Thanks. for($i=0;$i<count($pv->rawData); $i++){ SWITCH ($pv->rawData[$i]->my ID){ CASE '1': $row1++; $pv->results[$row1][1][0] = $pv->rawData[$i]->data; break; CASE '2': $row2++; $pv->results[$row2][2][0] = $pv->rawData[$i]->data; break; }

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• CSV string handling

  - by Christian Hagelid

  Typical way of creating a CSV string (pseudocode): create a CSV container object (like a StringBuilder in C#) Loop through the strings you want to add appending a comma after each one After the loop, remove that last superfluous comma. Code sample: public string ReturnAsCSV(ContactList contactList) { StringBuilder sb = new StringBuilder(); foreach (Contact c in contactList) { sb.Append(c.Name + ","); } sb.Remove(sb.Length - 1, 1); //sb.Replace(",", "", sb.Length - 1, 1) return sb.ToString(); } I feel that there should be an easier / cleaner / more efficient way of removing that last comma. Any ideas? Update I like the idea of adding the comma by checking if the container is empty, but doesn't that mean more processing as it needs to check the length of the string on each occurrence?

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• TCHAR end of line character

  - by Xaver

  int DownloadFtpDirectory(TCHAR* DirPath) { WIN32_FIND_DATA FileData; UINT a; TCHAR* APP_NAME = TEXT("ftpcli"); TCHAR* f; int j = 5; do { j++; f = _tcsninc(DirPath, j); }while (_tcsncmp(f, TEXT("/"), 1)); TCHAR* PATH_FTP = wcsncpy(new TCHAR[j], DirPath, j); After the last line gets a string in which there is no line ending character, how to fix this? P.S. how to do so would be out of line "ftp://ftp.microsoft.com/bussys/", get a string ftp.microsoft.com if both strings are TCHAR ?

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• Why Java SimpleDateFormat().parse() is printing weird formate?

  - by MAK

  My input is String formated as the following: 3/4/2010 10:40:01 AM 3/4/2010 10:38:31 AM My code is: DateFormat dateFormat = new SimpleDateFormat("dd/mm/yyyy hh:mm:ss aa"); try { Date today = dateFormat.parse(time); System.out.println("Date Time : " + today); } catch (ParseException e) { e.printStackTrace(); } the output is: Sun Jan 03 10:38:31 AST 2010 Sun Jan 03 10:40:01 AST 2010 I'm not sure from where the day (Sun) came from? or (AST)? and why the date is wrong? I just wanted to keep the same format of the original String date and make it into a Date object. I'm using Netbeans 6.8 Mac version.

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• Parsing/Tokenizing a String Containing a SQL Command

  - by Alan Storm

  Are there any open source libraries (any language, python/PHP preferred) that will tokenize/parse an ANSI SQL string into its various components? That is, if I had the following string SELECT a.foo, b.baz, a.bar FROM TABLE_A a LEFT JOIN TABLE_B b ON a.id = b.id WHERE baz = 'snafu'; I'd get back a data structure/object something like //fake PHPish $results['select-columns'] = Array[a.foo,b.baz,a.bar]; $results['tables'] = Array[TABLE_A,TABLE_B]; $results['table-aliases'] = Array[a=TABLE_A, b=TABLE_B]; //etc... Restated, I'm looking for the code in a database package that teases the SQL command apart so that the engine knows what to do with it. Searching the internet turns up a lot of results on how to parse a string WITH SQL. That's not what I want. I realize I could glop through an open source database's code to find what I want, but I was hoping for something a little more ready made, (although if you know where in the MySQL, PostgreSQL, SQLite source to look, feel free to pass it along) Thanks!

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• Bitap algorithm in Java [closed]

  - by davit-datuashvili

  The following is the bitap algorithm according to Wikipedia. Can someone translate this to Java? #include <string.h> #include <limits.h> const char *bitap_bitwise_search(const char *text, const char *pattern) { int m = strlen(pattern); unsigned long R; unsigned long pattern_mask[CHAR_MAX+1]; int i; if (pattern[0] == '\0') return text; if (m > 31) return "The pattern is too long!"; /* Initialize the bit array R */ R = ~1; /* Initialize the pattern bitmasks */ for (i=0; i <= CHAR_MAX; ++i) pattern_mask[i] = ~0; for (i=0; i < m; ++i) pattern_mask[pattern[i]] &= ~(1UL << i); for (i=0; text[i] != '\0'; ++i) { /* Update the bit array */ R |= pattern_mask[text[i]]; R <<= 1; if (0 == (R & (1UL << m))) return (text + i - m) + 1; } return NULL; }

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• Using string[] as a Dictionary key e.g. Dictionary<string[], StringBuilder>

  - by Nick Allen - Tungle139

  The structure I am trying to achieve is a composite Dictionary key which is item name and item displayname and the Dictionary value being the combination of n strings So I came up with var pages = new Dictionary<string[], StringBuilder>() { { new string[] { "food-and-drink", "Food & Drink" }, new StringBuilder() }, { new string[] { "activities-and-entertainment", "Activities & Entertainment" }, new StringBuilder() } }; foreach (var obj in my collection) { switch (obj.Page) { case "Food": case "Drink": pages["KEY"].Append("obj.PageValue"); break; ... } } The part I am having trouble with is accessing the Dictionary Key pages["KEY"] How do I target the Dictionary Key whose value at [0] == some value? Hope that makes sense

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• How to detect if certain characters are at the end of an NSString?

  - by Sheehan Alam

  Let's assume I can have the following strings: "hey @john..." "@john, hello" "@john(hello)" I am tokenizing the string to get every word separated by a space: [myString componentsSeparatedByString:@" "]; My array of tokens now contain: @john... @john, @john(hello) For these cases. How can I make sure only @john is tokenized, while retaining the trailing characters: ... , (hello) Note: I would like to be able to handle all cases of characters at the end of a string. The above are just 3 examples.

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• convert string to date and write back into NSMutableArray

  - by padatronic

  I have a NSMutableArray I get by loading a plist into it. The date field comes in as a string and i want to change it into a nsdate. I can change an nsstring into an nsdate. My array is an array of objects like the one below; { Date = "1/1/2009" Description = "Have you ever looked at a badger and thought i wonder how far you could fire that out of a cannon? Well this talk is for you"; File = "http://www.badgerCannon.org.uk/mp3/070310pm.mp3"; Series = "The Badger planet"; Speaker = "Will Ferell"; Title = "Is it a bird, is it a plane? no its a badger"; } I loop through and pull out the date and convert it from a NSString to a NSDate. I try writing it back in using the code; [[self.MediaDataArray objectAtIndex:i] replaceObjectAtIndex:0 withObject:Date]; but it errors and i am pretty sure it is because i am not putting it back into the array in the same format, ie just as a date not as date = "date". But lets face it i don't really know! Am i barking up the wrong tree? Please help, i have got the coding equivalent of writters block, or alternatively am just being really stupid! thanks in advance

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• Java replace slow?

  - by cpf

  Hi StackOverflow, I have a Java application that makes heavy use of a large file, to read, process and give through to SolrEmbeddedServer (http://lucene.apache.org/solr/). One of the functions does basic HTML escaping: private String htmlEscape(String input) { return input.replace("&", "&amp;").replace(">", "&gt;").replace("<", "&lt;") .replace("'", "&apos;").replaceAll("\"", "&quot;"); } While profiling the application, the program spends roughly 58% of the time in this function, a total of 47% in replace, and 11% in replaceAll. Now, is the Java replace that slow, or am I on the right path and should I consider the program efficient enough to have its bottleneck in Java and not in my code? (Or am I replacing wrong?) Thanks in advance!

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• Storing Shell Output

  - by Emil Radoncik

  Hello everybody, I am trying to read the output of a shell command into a string buffer, the reading and adding the values is ok except for the fact that the added values are every second line in the shell output. for example, I have 10 rows od shell output and this code only stores the 1, 3, 5, 7, 9, row . Can anyone point out why i am not able to catch every row with this code ??? any suggestion or idea is welcomed :) import java.io.*; public class Linux { public static void main(String args[]) { try { StringBuffer s = new StringBuffer(); Process p = Runtime.getRuntime().exec("cat /proc/cpuinfo"); BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream())); while (input.readLine() != null) { //System.out.println(line); s.append(input.readLine() + "\n"); } System.out.println(s.toString()); } catch (Exception err) { err.printStackTrace(); } } }

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• In Ruby, what is good way to filter all the methods of an object that contain the word "time" in it?

  - by Jian Lin

  I tried the following and it was partly working: >> s.methods.map {|n| n if n =~ /time/} => [nil, nil, nil, nil, nil, nil, nil, nil, "skip_time_zone_conversion_for_attri butes", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, ni l, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, ni l, "timestamped_migrations", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "time_zone_aware _attributes", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "default_timezone", nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, n il, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, "recor d_timestamps", nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil] >> s.methods.each {|n| p n if n =~ /time/} "skip_time_zone_conversion_for_attributes" "timestamped_migrations" "time_zone_aware_attributes" "default_timezone" "record_timestamps" => ["extended_by", "before_create", "vote_ids=", "save_without_dirty", "_delete" , "touch", "daemonize", "after_destroy", "skip_time_zone_conversion_for_attribut es", "methods", "send", "to_query", "becomes", "after_validation", "store_full_s ti_class?", "save_with_transactions!", "autosave_associated_records_for_votes", "require_library_or_gem", "enum_for", "taint", "instance_variable_defined?", "ac [...] and the rest of the whole array >> s.methods.filter {|n| n =~ /time/} NoMethodError: undefined method `filter' for #<Array:0x4de6b00> from (irb):93

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• Get a substring of a long string which fits in a width

  - by Lu Lu

  Hello everyone, I have a long string, ex: "Please help me to solve this problem." This string is so long to fit in a width of 100 pixels. I need to get a substring of this string and substring will fit in 100 pixels. Ex: substring "Please help me to sol" is fit in 100 pixels. Please help me how to estimate a substring like this. Thanks. My application is Win Forms and C#.

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• Resharper Split String literal

  - by Ismael

  I was not lucky in my 15 minutes googling. Maybe bad luck with good keyword? Why does the Resharper suggest spliting a string in function parameter? Example: From this: return PartialView("Categorias", lista); To this: return PartialView("Cat" + "egorias", lista); I checked documentation here: link And it says: Split string literal - Splits string literal into two literals. I want to discover why is this a good practice, what are the fundamental idealogic behind the scenes that achieved this practice. I don't want to do it without knowing why... Help is soooo appreciated.

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• change url or query string wihout reloading using jquery plugin

  - by Pradyut Bhattacharya

  Hi I want to change the url or query string without reloading the page... I have used the QUERY STRING OBJECT plugin for jquery I have this example page in which on click of a album it should change the query string... Now i can change the url using the code window.location.href = $.query.set('aid', a_id); but it goes for reloading the page... and this code does not have any effect var newUrl = $.query.set('aid', a_id); How can do without reloading the page... how can i do without reloading the page... Thanks Pradyut India

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• Convert json to a string using jquery

  - by becomingGuru

  I have a nested json. I want to post it as a form input value. But, seems like jquery puts "Object object" string into the value. It seems easier to pass around the string and convert into the native form I need, than dealing with json as I don't need to change anything once it is generated. What is the simplest way to convert a json var json = { "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ], "newSubscription": false, "companyName": null }; into its string form? var json = '{ "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ], "newSubscription": false, "companyName": null }' Following doesn't do what I need: Json.stringify()

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• How to scan an array for certain information

  - by Andrew Martin

  I've been doing an MSc Software Development conversion course, the main language of which is Java, since the end of September. We have our first assessed practical coming and I was hoping for some guidance. We have to create an array that will store 100 integers (all of which are between 1 and 10), which are generated by a random number generator, and then print out ten numbers of this array per line. For the second part, we need to scan these integers, count up how often each number appears and store the results in a second array. I've done the first bit okay, but I'm confused about how to do the second. I have been looking through the scanner class to see if it has any methods which I could use, but I don't see any. Could anyone point me in the right direction - not the answer, but perhaps which library it comes from? Code so far: import java.util.Random; public class Practical4_Assessed { public static void main(String[] args) { Random numberGenerator = new Random (); int[] arrayOfGenerator = new int[100]; for (int countOfGenerator = 0; countOfGenerator < 100; countOfGenerator++) arrayOfGenerator[countOfGenerator] = numberGenerator.nextInt(10); int countOfNumbersOnLine = 0; for (int countOfOutput = 0; countOfOutput < 100; countOfOutput++) { if (countOfNumbersOnLine == 10) { System.out.println(""); countOfNumbersOnLine = 0; countOfOutput--; } else { System.out.print(arrayOfGenerator[countOfOutput] + " "); countOfNumbersOnLine++; } } } } Thanks, Andrew

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• Using TagLib as a framework in XCode: C++ header <string> not found

  - by david

  I have build TagLib as a framework using this: https://github.com/rahvin/TagLib.framework. I dragged the produced framework into my XCode Project and now it says: "String: No such file or directory" on including <TagLib/TagLib.h>. I've never done this before. It seems as XCode does not include the c++ headers by default ?! (Or is string not a c++ default header?!) Note: The taglib headers are included right. <string> is the problem

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• Using only alphanumeric characters(a-z) inside toCharArray

  - by Aaron

  Below you will find me using toCharArray in order to send a string to array. I then MOVE the value of the letter using a for statement... for(i = 0; i < letter.length; i++){ letter[i] += (shiftCode); System.out.print(letter[i]); } However, when I use shiftCode to move the value such as... a shifted by -1; I get a symbol @. Is there a way to send the string to shiftCode or tell shiftCode to ONLY use letters? I need it to see my text, like "aaron", and when I use the for statement iterate through a-z only and ignore all symbols and numbers. I THINK it is as simple as... letter=codeWord.toCharArray(a,z); But trying different forms of that and googling it didn't give me any results. Perhaps it has to do with regex or something? Below you will find a complete copy of my program; it works exactly how I want it to do; but it iterates through letters and symbols. I also tried finding instructions online for toCharArray but if there exists any arguments I can't locate them. My program... import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* * Aaron L. Jones * CS219 * AaronJonesProg3 * * This program is designed to - * Work as a Ceasar Cipher */ /** * * Aaron Jones */ public class AaronJonesProg3 { static String codeWord; static int shiftCode; static int i; static char[] letter; /** * @param args the command line arguments */ public static void main(String[] args) throws IOException { // Instantiating that Buffer Class // We are going to use this to read data from the user; in buffer // For performance related reasons BufferedReader reader; // Building the reader variable here // Just a basic input buffer (Holds things for us) reader = new BufferedReader(new InputStreamReader(System.in)); // Java speaks to us here / We get it to query our user System.out.print("Please enter text to encrypt: "); // Try to get their input here try { // Get their codeword using the reader codeWord = reader.readLine(); // Make that input upper case codeWord = codeWord.toUpperCase(); // Cut the white space out codeWord = codeWord.replaceAll("\\s",""); // Make it all a character array letter = codeWord.toCharArray(); } // If they messed up the input we let them know here and end the prog. catch(Throwable t) { System.out.println(t.toString()); System.out.println("You broke it. But you impressed me because" + "I don't know how you did it!"); } // Java Speaks / Lets get their desired shift value System.out.print("Please enter the shift value: "); // Try for their input try { // We get their number here shiftCode = Integer.parseInt(reader.readLine()); } // Again; if the user broke it. We let them know. catch(java.lang.NumberFormatException ioe) { System.out.println(ioe.toString()); System.out.println("How did you break this? Use a number next time!"); } for(i = 0; i < letter.length; i++){ letter[i] += (shiftCode); System.out.print(letter[i]); } System.out.println(); /**************************************************************** **************************************************************** ***************************************************************/ // Java speaks to us here / We get it to query our user System.out.print("Please enter text to decrypt: "); // Try to get their input here try { // Get their codeword using the reader codeWord = reader.readLine(); // Make that input upper case codeWord = codeWord.toUpperCase(); // Cut the white space out codeWord = codeWord.replaceAll("\\s",""); // Make it all a character array letter = codeWord.toCharArray(); } // If they messed up the input we let them know here and end the prog. catch(Throwable t) { System.out.println(t.toString()); System.out.println("You broke it. But you impressed me because" + "I don't know how you did it!"); } // Java Speaks / Lets get their desired shift value System.out.print("Please enter the shift value: "); // Try for their input try { // We get their number here shiftCode = Integer.parseInt(reader.readLine()); } // Again; if the user broke it. We let them know. catch(java.lang.NumberFormatException ioe) { System.out.println(ioe.toString()); System.out.println("How did you break this? Use a number next time!"); } for(i = 0; i < letter.length; i++){ letter[i] += (shiftCode); System.out.print(letter[i]); } System.out.println(); } }

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• Can't set default value of string property to "" in the Xcode CoreData model designer

  - by glenc

  I have an entity in my datamodel with a string property that is currently optional, and I'd like to convert this property to a required property with a default value of the empty string. As others have discovered, leaving the default value blank results in validation errors (since the designer interprets this as NULL), but trying '', "", or @"" as the default value results in those literal characters being interpreted as the default, rather than the empty zero-length string, as desired. I did find this thread on Google, however, apart from the solution being really ugly (model definition split between the .xcdatamodel and objc source), it also doesn't work for lightweight migrations because those migrations are done solely based on the .xcdatamodel files and the objc logic from your entity implementations isn't loaded. Is there any way to achieve this in the data model designer?

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