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• C++ - How to efficiently find out if any string in a vector can be assembled from a set of letters

  - by Francisco P.

  Hello, everyone! I am implementing a text-based version of Scrabble for a college project. I have a vector containing around 400K strings (my dictionary), and, at some point in every turn, I'm going to have to check if there's still a word in the dictionary which can be formed with the pieces in the player's hand. I'm checking if the player has any move left... If not, it's game over for the player in question... My only solution to this is iterating through the string, one by one, and using a sub-routine I have to check if the string in question can be formed from the player's pieces. I'll implement a quickfail checking if the user has any vowels, but it'll still be woefully inefficient. Any suggestions? Thanks for your time!

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• How to create simpliest PHP Get API with UTF-8 support?

  - by Ole Jak

  How to create simpliest *(less lines of code, less strange words) PHP Get API *(so any programm made in .Net C# could call url like http://localhost/api.php?astring=your_utf-8_string&bstring=your_utf-8_string ) with UTF-8 support? What I need Is PHP API with one function - concatinate 2 strings so that a simple .net client like this would be able to use it: public string setStream(string astring, string bstring) { string newAstring =Uri.EscapeDataString(astring); string newBstring = Uri.EscapeDataString(bstring); WebClient client = new WebClient(); var result = client.DownloadString(("http://localhost/api.php?" + string.Format("astring={0}&bstring={1}", newAstring, newBstring)).ToString()); return result; }

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• C# RichTextBox - Partially setting DetectUrls=false

  - by Suds

  Hi, I have this RichTextBox and I have embedded some http links in it. I have set DetectUrls = true, and it displays the links correctly and handles in the event. In the same RichTextBox, I have one more string displayed which looks like this Type http://< Your host name Now, since DetectUrls= true, the portion "http://<" is displayed as a link, while I want this to be text. If I set the DetectUrls=false just before displaying this string, none of the other links are displayed as links. Is there a way to partially set DetectUrls for some strings and not for others? Thanks

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• Building a custom iterator.

  - by Isai

  I am making this class which is a custom Map based off a hash map. I have an add method where if you add an object the object will be the key, and its value will be 1 if the object is not currently in the list. However if you add object that is currently in the list its value will be bumped up by 1. So if I added 10 strings which were all the same, the key would be that string and the value will be 10. I understand in practice when I iterate through the map, there is actually only one object to iterate, however, I am trying to create a inner class that will define an iterator that will iterate the same object however many times its value is. I can do this by simply using for loops to construct an appropriate ArrayList and just create an iterator for that, but that is too inefficient. Is there an easy or more efficient way of doing this?

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• Perl Matching ,Extracting , and printing emails

  - by user3448790

  How do I match an email using the The Official Standard: RFC 5322 in a html source code, after that i will extract the strings that are matched ONLY, and print out inly the emails, and not the whole source code? Is there any examples and output to illustrate this? Thnaks! elsif ($_ eq '-dDATA' or $_ eq '-ft') { opendir(DIR,'DATA'); my(@dir) = grep /\.htm/, readdir (DIR); closedir(DIR); my $value = join(@dir); print "$value\n"; foreach my $movies (@dir) { open (my $FHD, "<", "DATA/$movies") || die $!; print <$FHD>; } } }

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• Download File from Web C++ (with winsock?)

  - by Lienau

  I need to download files/read strings from a specified url in C++. I've done some research with this, cURL seems to be the most popular method. Also, I've used it before in PHP. The problem with cURL is that the lib is huge, and my file has to be small. I think you can do it with winsock, but I can't find any simple examples. If you have a simple winsock example, a light cURL/Something else, or anything that could get the job done. I would greatly appreciated. Also, I need this to work with native C++.

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• java - check if string ends with certain pattern

  - by The Learner

  I have string like: This.is.a.great.place.too.work. (or) This/is/a/great/place/too/work/ than my java program should give me that the sentence is valid and it has "work". if i Have : This.is.a.great.place.too.work.hahahha (or) This/is/a/great/place/too/work/hahahah Should not give me that there is a work in the sentance. so I am looking at java strings to find a word at the end of the sentance having . (or),(or)/ before it. How can I achieve that

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• PHP mySQL query's and PHP Variables

  - by jon

  I'm trying to make an OO Login system for a project I'm working on, and am having trouble with inserting variables into the query strings. In the code below, if I replace "$TBL_NAME" with the actual table name it works. Why isn't $TBL_NAME translating to the value of $TBL_NAME? class UserDB { private $TBL_NAME = "users"; public static function CheckLogin($username, $password) { Database::Connect(); $username = stripslashes($username); $password = stripslashes($password); $username = mysql_real_escape_string($username); $password = mysql_real_escape_string($password); $sql="SELECT uid FROM $TBL_NAME WHERE username='$username' AND password='$password' "; $result =mysql_query($sql); $count=mysql_num_rows($result); if ($count==1) return true; else return false; } The Query is returning false.

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• In Perl, is there a built in way to compare two arrays for equality?

  - by Bill

  I have two arrays of strings that I would like to compare for equality: my @array1 = ("part1", "part2", "part3", "part4"); my @array2 = ("part1", "PART2", "part3", "part4"); Is there a built-in way to compare arrays like there is for scalars? I tried: if (@array1 == @array2) {...} but it just evaluated each array in scalar context, and so compared the length of each array. I can roll my own function to do it, but it seems like such a low-level operation that there should be a built-in way to do it. Is there? Edit: sadly, I don't have access to 5.10+ or optional components.

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• Ruby (with Rails) convert a string of time into seconds?

  - by Ryan

  So, I've got a string of time... something along the lines of '4 hours' '48 hours' '3 days' '15 minutes' I would like to convert those all into seconds. For '4 hours', this works fine Time.parse('4 hours').to_i - Time.prase('0 hours').to_i => 14400 # 4 hours in seconds, yay However, this doesn't work for 48 hours (outside of range error). It also does not work for 3 days (no information error), etc. Is there a simple way to convert these strings into seconds?

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• Regular Expression Program

  - by david robers

  Hi I have the following text: SMWABCCA ABCCAEZZRHM NABCCAYJG XABCCA ABCCADK ABCCASKIYRH ABCCAKY PQABCCAK ABCCAKQ This method takes a regex in out by the user and SHOULD print out the Strings it applies to but seems to print out something completely different: private void matchIt(String regex) { Pattern p = Pattern.compile(regex); Matcher m = null; boolean found = false; for(int i = 0; i < data.length; i++){ m = p.matcher(data[i]); if(m.find()){ out.println(data[i]); found = true; } } if(!found){ out.println("Pattern Not Found"); } } When inputting "[C]" It outputs: SMWABCCA ABCCAEZZRHM NABCCAYJG XABCCA ABCCADK ABCCASKIYRH ABCCAKY PQABCCAK ABCCAKQ Any ideas why? I think I'm using m.find() improperly...

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• In Django, using __init__() method of non-abstract parent model to record class name of child model

  - by k-g-f

  In my Django project, I have a non-abstract parent model defined as follows: class Parent(models.Model): classType = models.CharField(editable=False,max_length=50) and, say, two children models defined as follows: class ChildA(Parent): parent = models.OneToOneField(Parent,parent_link=True) class ChildB(Parent): parent = models.OneToOneField(Parent,parent_link=True) Each time I create an instance of ChildA or of ChildB, I'd like the classType attribute to be set to the strings "ChildA" or "ChildB" respectively. What I have done is added an _ _ init_ _() method to Parent as follows: class Parent(models.Model): classType = models.CharField(editable=False,max_length=50) def __init__(self,*args,**kwargs): super(Parent,self).__init__(*args,**kwargs) self.classType = self.__class__.__name__ Is there a better way to implement and achieve my desired result? One downside of this implementation is that when I have an instance of the Parent, say "parent", and I want to get the type of the child object linked with "parent", calling "parent.classType" gives me "Parent". In order to get the appropriate "ChildA" or "ChildB" value, I need to write a "_getClassType()" method to wrap a custom sql query.

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• Split SQL statements

  - by eaZy

  Hello, I am writing a backend application which needs to be able to send multiple SQL commands to a MySQL server. MySQL = 5.x support multiple statements, but unfortunately we are interfacing with MySQL 4.x. I am trying to find a way (hint: regex) to split SQL statements by their semicolon, but it should ignore semicolons in single and double quotes strings. http://www.dev-explorer.com/articles/multiple-mysql-queries has a very nice regex to do that, but doesn't support double quotes. I'd be happy to hear your suggestions.

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• How do I create substrings from an array using PHP?

  - by mike

  I have an array of data that looks like this: 2008, Honda, Accord, Used, Car And I'm trying to figure a way to make a number of sub strings from each item in the array. For example, I would like to loop each item and create the following substrings: 2008 2008 Honda 2008 Accord 2008 Used 2008 Car 2008 Honda Accord 2008 Honda Used 2008 Honda Car 2008 Accord Honda 2008 Accord Used 2008 Accord Car 2008 Used Honda 2008 Used Accord 2008 Used Car 2008 Car Honda 2008 Car Accord 2008 Car Used Honda Honda 2008 Honda Accord Honda Used Honda Car Honda 2008 Accord Honda 2008 Used etc ... I need to make sure that there are no duplicates created and I need to prevent it from adding the same word twice (ex: Honda Honda OR 2008 Honda 2008 - i dont want that). Has anyone wrote anything like this or know where I can find a script that works the same way?

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• What are the disadvantages of using a StringBuilder?

  - by stickman

  I know that StringBuilder is more efficient than a normal string when processing code which modifies the string value a lot because although strings act like value types, they are actually reference, which makes them immutable so every time we change it, we need to create a new reference in memory. My question is that, why doesn't .NET just use stringBuilder by default? There must be some disadvantages of it over just using String. Can anyone tell me what they are? The only thing I can think of is perhaps it is a heavier object and it takes more time to instantiate so if you aren't changing the string too much, this would override the benefits of StringBuilder

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• Creating methods with infinite overloads ? (.NET)

  - by MarceloRamires

  In C# you can do this: foo = string.Format("{0} {1} {2} {3} ...", "aa", "bb", "cc" ...); This method Format() accepts infinite parameters, being the first one how the string should be formatted and the rest are values to be put in the string. Today I've come to a situation where I had to get a set of strings and test them, then I remembered this language functionality, but I had no clue. After a few unsuccessful web searches, I've realised it would be more prudent to just get an array, which didn't make me quite satisfied. Q: How do I make a function that accepts infinite parameters? And how do I use it ?

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• Using php to create a password system with chinese characters

  - by WillDonohoe

  Hi guys, I'm having an issue with validating chinese characters against other chinese characters, for example I'm creating a simple password script which gets data from a database, and gets the user input through get. The issue I'm having is for some reason, even though the characters look exactly the same when you echo them out, my if statement still thinks they are different. I have tried using the htmlentities() function to encode the characters, the password from the database encodes nicely, giving me a working '& #35441;' (I've put a space in it to stop it from converting to a chinese character!). The other user input value gives me a load of funny characters. The only thing which I believe must be breaking it, is it encodes in a different way and therefore the php thinks it's 2 completely different strings. Does anybody have any ideas? Thanks in advance, Will

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• Using Ruby to scan through a string

  - by nekosune

  I am trying to create a regex to gather info from strings that look like this: A22xB67-E34... for any number. I have the regex: @spaceCode = "[A-Z]([A-Z0-9][0-9]|[0-9])" @moveCode=/^(?<one>#{@spaceCode})((?<mode>x|\-)(?<two>#{@spaceCode}))+$/ However I get: s="A11-A22xA33".scan(@moveCode) => [["A11", "11", "xA33", "x", "A33", "33"]] which is most definatly NOT what I want. The string could be any length of C22 etc, with either x or - as the seperator, and put it into an array like: ['A22','x',B22','-'.......] Examples: "A22xB23-D23xE25" => ['A22','x','B23','=','D23','E25;] "AA2xA9-A1" => ['AA2','x','A9','-','A1']

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• Oracle date / order by question

  - by user561793

  I want to select a date from oracle table formatted like select (to_char(req_date,'MM/YYYY')) but I also want to order the result set on this date format. I want them to be ordered like dates not strings. Like this 09/2009 10/2009 11/2009 12/2009 01/2010 02/2010 03/2010 04/2010 05/2010 06/2010 07/2010 08/2010 09/2010 10/2010 11/2010 12/2010 Not like 01/2010 02/2010 03/2010 04/2010 05/2010 06/2010 07/2010 08/2010 09/2009 09/2010 10/2009 10/2010 11/2009 11/2010 12/2009 12/2010 Any way to do this in sql? full sql is select (to_char(req_date,'MM/YYYY')) as monthYear,count(req_id) as count from REQUISITION_CURRENT t group by to_char(req_date,'MM/YYYY') Thanks

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• Return Empty String as NULL

  - by Daniel

  I have a listbox select and I want when the user selects null for the empty string it produces to pull the nulls from the SQL table. Here's what I have now. Blank strings return nothing because there are no empty fields in the table. SELECT * FROM dbo.Table WHERE ID = " & TextBox2.Text & " and And Field1 IN (" & Msg1 & ") How do I code that?

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• Validate string in javascript with parenthesis

  - by user2932856

  I just need to validate 2 strings in javascript. One of them must contain only 0 or more open parenthesis ( . The other must contain only 0 or more close parenthesis ) . This means only those characters are allowed in each value. After spending a lot of time trying to understand the regex, I can't find a way to achieve this. With the escape characters I make a mess of the regex function. This is what I thought: /\(*/ Could anyone help me?

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• How do I left pad a database column in FrontBase?

  - by PleaseStand

  I have a table of items (let's call it WIDGET) that each have their own eight-digit barcode numbers stored in a VARCHAR field (let's call it BARCODE; the table's primary key is in a separate integer field ID). My problem is that some personnel have omitted the leading zeros instead of entering the entire number while others have not. All new data is being entered with all eight digits present, but I would like to update all the existing records (several hundred in all) to eight digits for the sake of consistency. 1 → 00000001 234 → 00000234 5678 → 00005678 00009012 → 00009012 I know FrontBase supports all of SQL-92, but SQL-92 has no function specifically for left-padding strings. I already came up with a solution, but I am posting this question to see if anyone can think of a better way of doing this than I did.

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• WPF/C# - Sometimes my dropdowns/datepickers will stop functioning?

  - by BlargINC

  Q: Where should I check to track this down? Issue: Opening a view model in my application sometimes makes dropdowns/datepickers nonfunctional. ie. dropdown won't drop and the datepicker calendar won't come up I suspect a binding issue but don't see one. Dropdowns have normal things like strings, numbers. One drop has a list of mini views. Datepickers are bound to nullable dates set in the constructor of the viewmodel. Note: These same things work in other viewmodels/views. I can paste code, I'm just not sure what code is relevant here. Thank you for helping me :)

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• Sometimes my dropdowns/datepickers will stop functioning?

  - by BlargINC

  Q: Where should I check to track this down? Issue: Opening a view model in my application sometimes makes dropdowns/datepickers nonfunctional. ie. dropdown won't drop and the datepicker calendar won't come up I suspect a binding issue but don't see one. Dropdowns have normal things like strings, numbers. One drop has a list of mini views. Datepickers are bound to nullable dates set in the constructor of the viewmodel. Note: These same things work in other viewmodels/views. I can paste code, I'm just not sure what code is relevant here.

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• Any tools can randomly generate the source code according to a language grammar?

  - by wbsun

  A C program source code can be parsed according to the C grammar(described in CFG) and eventually turned into many ASTs. I am considering if such tool exists: it can do the reverse thing by firstly randomly generating many ASTs, which include tokens that don't have the concrete string values, just the types of the tokens, according to the CFG, then generating the concrete tokens according to the tokens' definitions in the regular expression. I can imagine the first step looks like an iterative non-terminals replacement, which is randomly and can be limited by certain number of iteration times. The second step is just generating randomly strings according to regular expressions. Is there any tool that can do this?

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