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• How to write a regular expression for excluding some special characters from string?

  - by Akshay

  I want to exclude the following characters from my string: \-- ' < > Please tell me how to write a regular expression for this.

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• Why is this statement treated as a string instead of its result?

  - by reve_etrange

  I am trying to perform some composition-based filtering on a large collection of strings (protein sequences). I wrote a group of three subroutines in order to take care of it, but I'm running into trouble in two ways - one minor, one major. The minor trouble is that when I use List::MoreUtils 'pairwise' I get warnings about using $a and $b only once and them being uninitialized. But I believe I'm calling this method properly (based on CPAN's entry for it and some examples from the web). The major trouble is an error "Can't use string ("17/32") as HASH ref while "strict refs" in use..." It seems like this can only happen if the foreach loop in &comp is giving the hash values as a string instead of evaluating the division operation. I'm sure I've made a rookie mistake, but can't find the answer on the web. The first time I even looked at perl code was last Wednesday... use List::Util; use List::MoreUtils; my @alphabet = ( 'A', 'R', 'N', 'D', 'C', 'Q', 'E', 'G', 'H', 'I', 'L', 'K', 'M', 'F', 'P', 'S', 'T', 'W', 'Y', 'V' ); my $gapchr = '-'; # Takes a sequence and returns letter = occurrence count pairs as hash. sub getcounts { my %counts = (); foreach my $chr (@alphabet) { $counts{$chr} = ( $[0] =~ tr/$chr/$chr/ ); } $counts{'gap'} = ( $[0] =~ tr/$gapchr/$gapchr/ ); return %counts; } # Takes a sequence and returns letter = fractional composition pairs as a hash. sub comp { my %comp = getcounts( $[0] ); foreach my $chr (@alphabet) { $comp{$chr} = $comp{$chr} / ( length( $[0] ) - $comp{'gap'} ); } return %comp; } # Takes two sequences and returns a measure of the composition difference between them, as a scalar. # Originally all on one line but it was unreadable. sub dcomp { my @dcomp = pairwise { $a - $b } @{ values( %{ comp( $[0] ) } ) }, @{ values( %{ comp( $[1] ) } ) }; @dcomp = apply { $_ ** 2 } @dcomp; my $dcomp = sqrt( sum( 0, @dcomp ) ) / 20; return $dcomp; } Much appreciation for any answers or advice!

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• Alternative to itoa() for converting integer to string C++?

  - by Tomek

  I was wonding if there was an alternative to itoa() for converting an integer to a string because when I run it in visual Studio I get warnings, and when I compile my program under Linux, it won't even compile. Thanks, tomek

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• How to convert string to XML object in JavaScript?

  - by Jack Roscoe

  Hi, I am aware of this question already existing, but it has given me no luck. I have an application which loads a physicial XML document via the following method: jQuery.ajax( { type: "GET", url: fileName, dataType: "xml", success: function(data) { etc... I parse the XML and convert it into a string which is saved into a variable so that it can easily be stored in a database. How can I now convert the data in this variable back into an XML object so that it can be parsed as such?

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• Search backward through a string using a regex (in Python)?

  - by John Mulder

  I'm parsing some code and want to match the doxygen comments before a function. However, because I want to match for a specific function name, getting only the immediately previous comment is giving me problems. Is there a way to search backward through a string using the Python Regex library? Is there a better (easier) approach that I'm missing?

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• how to identify Google App Engine app from browser string ?

  - by zzzeek

  Some app is hitting my site excessively from GAE. Here is the browser string in the logs: AppEngine-Google; (+http://code.google.com/appengine; appid: ware) Can that app be identified ? "appid" would seem to indicate this but it doesn't seem to be the case.

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• In Python, how do I do a string replacement AND retrive the replaced substring?

  - by mike

  In Perl, I would write: $x = "abbbc"; $x =~ s/(b+)/z/; print "Replaced $1 and ended up with $x\n"; # "Replaced bbb and ended up with azc" How do I do this in Python -- do a regular-expression string replacement and record what it was that got replaced?

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• How can I use php to parse a date string?

  - by liuxingruo

  the date stringe is Apr 30, 2010 I want to parse the string into 2010-04-30 using php, how can I achieve this? Thanks!!

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• How do you add an int to a string in C++?

  - by Wawa

  int i = 4; string text = "Player "; cout << (text + i); I'd like it to cout "Player 4" ^ The above is obviously wrong but it shows what I'm trying to do here. Is there an easy way to do this or do I have to start adding new includes?

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• what's the best way to format an xml string in ruby?

  - by rubiii

  given an xml string like this: <some><nested><xml>value</xml></nested></some> what's the best option (using ruby) to format it into something readable like: <some> <nested> <xml>value</xml> </nested> </some>

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• How to parse a string into a datetime struct in C?

  - by thoaionline

  I would like to have a string (char*) parsed into a tm struct in C. Is there any built-in function to do that? I am referring to ANSI C in C99 Standard.

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• Best way to check for string in comma-delimited list with .NET?

  - by Jeremy Stein

  I'm reading a comma-delimited list of strings from a config file. I need to check whether another string is in that list. For example: "apple,banana,cheese" If I check for "apple" I should find it, but if I check for "app" I should not. What's the most straight-forward and concise way to do this? It doesn't have to be fast. (I'll add my solution as an answer, but I'm hoping someone has something better.)

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• Is it possible to use a string variable to reference an element in Javascript?

  - by somerandomguy

  Here's the quick version of the code as it stands right now: function foo(attributeName, someJSObj, key, newValue) { someJSObj[key].attributeName = newValue; } Obviously this doesn't work, since it just creates a new element called attributeName. Is there an easy way to dereference the attributeName into the string that represents some existing attribute on someJSObj?

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• How to check if the given string is palindrome?

  - by Prakash

  Definition: A palindrome is a word, phrase, number or other sequence of units that has the property of reading the same in either direction How to check if the given string is a palindrome? This was one of the FAIQ [Frequently Asked Interview Question] a while ago but that mostly using C. Looking for solutions in any and all languages possible.

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• How to convert a DataTable to a string in C#?

  - by Mark Allison

  Hi there, I'm using Visual Studio 2005 and have a DataTable with two columns and some rows that I want to output to the console. I hoped there would be something like: DataTable results = MyMethod.GetResults(); Console.WriteLine (results.ToString()); What's the best way (i.e. least amount of coding from me) to convert a simple DataTable to a string? Thanks, Mark.

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• I want to split string without using split function ?

  - by Sanjeev

  I want to split string without using split . can anybody solve my problem I am tried but I cannot find the exact logic.

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• launch the emulator, I only see the black window with the string 'ANDROID", and no more desktop and

  - by Jiawelin

  Dear experts, I download the Android code and "make sdk" to build out my own SDK, but the emulator from this SDK does not work well -- it only shows the black window with the "ANDROID" string, but I can't see any desktop picture or any applications. what's wrong here? anyone could please provide me a hint? Thanks a lot. I use the command: $./emulator @jiawelin -debug all and the last output message is: emulator: android_hw_control_init: hw-control qemud handler initialized

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• how to extract a substring from a string untill second space is encountered in Csharp?

  - by gbprithvi

  i have a string like this "o1 1232.5467 1232.5467 1232.5467 1232.5467 1232.5467 1232.5467" how do i extract only "o1 1232.5467" the no.of characters to be extracted are not the same always..hence i want to extract until second space is encountered..plz help..

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• What is simpliest C# function to parse Json String into object?

  - by Ole Jak

  What is simpliest C# function to parse Json String into object and display it (C# xaml WPF)? (for example object wit 2 arrays - arrA and arrB)

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• Breaking up in String data while XML parsing in java?

  - by Praveen Chandrasekaran

  while xml parsing, i have a string value like this : android &#38; iphone but my parsed value(output what i am getting) is just: android then i used the normalize method it comes : android iphone But i need a output like: android & iphone How to do that? Any Idea?

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• Using MSBuild, how to construct a dynamic string from iterating over files in an ItemGroup?

  - by RyBolt

  I need to create multiple /testcontainer: parameters to feed into a task that exec's MsTest. I have the following : <ItemGroup> <TestFiles Include="$(ProjectPath)\**\UnitTest.*.dll" /> </ItemGroup> for each match in TestFiles I would like to build a string like so: "/testcontainer:UnitTest.SomeLibrary1.dll" "/testcontainer:UnitTest.SomeLibrary2.dll" "/testcontainer:UnitTest.SomeLibrary3.dll" I am trying to use the internals of MSBuild without having to create a custom task, is this possible ? TIA

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• How do I convert a unicode to a string at the Python level?

  - by Thierry Lam

  The following unicode and string can exist on their own if defined explicitly: >>> value_str='Andr\xc3\xa9' >>> value_uni=u'Andr\xc3\xa9' If I only have u'Andr\xc3\xa9' assigned to a variable like above, how do I convert it to 'Andr\xc3\xa9' in Python 2.5 or 2.6?

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• [PHP]: Why "\" gives error while storing it in string?

  - by RPK

  My string looks like: $fullPath = $dirName . "/" . $file; If I replace / with \, it gives error: "Expecting identifier or variable". I want to store in the latter way itself. How to override anything coming in between?

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• How to get search results in grails if you have the domain (model) name stored in a string

  - by Shekhar

  I have a method which has domain name as a String parameter. def modelName="Equity" I want to use it like def results=modelName.findAll() Please guide me!

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• What's the difference between String.matches and Matcher.matches?

  - by Wing C. Chen

  What's the difference between String.matches and Matcher.matches? Is there any difference in terms of performance or other things?

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