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• How do I perform multiple replacements with Perl?

  - by duenguyen

  I have Perl code: my $s = "The+quick+brown+fox+jumps+over+the+lazy+dog+that+is+my+dog"; I want to replace every + with space and dog with cat. I have this regular expression: $s =~ s/\+(.*)dog/ ${1}cat/g; But, it only matches the first occurrence of + and last dog.

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• Page width in SSRS

  - by Kramii

  I want ot draw a line the full width of the page in SSRS. If I could get the page width in (say) px, I could assign it as an expression to the line width. Is this possible? How? Or is there an alternative?

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• GCC doesn't like C++ style casts with spaces

  - by uj2

  I am porting some C++ code to GCC, and apperantly it isn't happy with C++ style casting when sapces are involved, as in unsigned int(-1), long long(ShortVar) etc... It gives an error: expected primary-expression before 'long'. Is there any way to make peace with GCC without going over each one of those and rewrite in c-style?

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• Warning produced by f#: value has been copied to ensure the original is not mutated

  - by user1878761

  The first definition below produces the warning in the title when compiled with f# 3.0 and the warning level set to 5. The second definition compiles cleanly. I wondered if someone could please explain just what the compiler worries I might accidentally mutate, or how would splitting the expression with a let clause help avoid that. Many thanks. let ticks_with_warning () : int64 = System.DateTime.Now.Ticks let ticks_clean () : int64 = let t = System.DateTime.Now t.Ticks

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• Whats going on here can't you compare if(mychar1 == 'ä' || mychar2 == 'Ä') in C++?

  - by Chris_45

  Im trying to compare these two chars but on win 32 Visual Studio 2008: if(mychar1 == 'ä' || mychar2 == 'Ä') Erromess: Debug Assertion Failed! File:f\dd\vctools\crt_bld\self_x86\crt\src\xstring Line 1575 Expression: string subscript out of range

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• Integer separated by comma

  - by FrenchiInLa

  What's the best regular expression for integer separated by comma? It can also contain space between comma, and the field is not required which means it could be blank. 123,98549 43446 etc..

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• InfoPath: How to display a third column of a datasource?

  - by Michael Bray

  I have an InfoPath 2007 browser-enabled form that has a datasource with three columns, let's say columns A, B, and C. I have a dropdown that is keyed to column A and displays column B. Column C contains some data that I want to display in an expression box, and that I also want to use in some data validation against another field on the form. I'm looking for some help on how to reference that column C for displaying and use in validation. Thanks!

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• When is `x IS NOT NULL` not the same as `NOT(x IS NULL)`

  - by Mark Hurd

  For what x is The expression x IS NOT NULL is not equal to NOT(x IS NULL), as is the case in 2VL (quote from this answer, which is quoting Fabian Pascal Practical Issues in Database Management - A Reference for the Thinking Practitioner -- near the end of that answer) My guess is when x IS NULL is NULL, but I cannot guess when that would be (i.e. I haven't checked the SQL standard).

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• How to deal with Polish Characters while using regex ?

  - by Rachel

  I have street name as KRZYWON ANIELI and so what should be my regex to allow this kind of expression. Currently I have simple one which uses /^[a-zA-Z ]+$/ Kindly advise.

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• Parsing Range Expressions

  - by sameer karjatkar

  I have a string (R(46 - 9900)) AND ( NOT (R(48 - 9900))) where R denotes Range . If you evaluate the expression it results in R(46-47) , considering the logical operators (AND,NOT). I have a requirement where I need to parse such a string and evaluate it to a correct result . I have to use C++ as a programming tool to achieve this result . Can anyone suggest a few guide lines as to how do I proceed on this ?

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• Retrieve all hashtags from a tweet in a PHP function

  - by snorpey

  Hi. I want to retrieve all hashtags from a tweet using a PHP function. I know someone asked a similar question here, but there is no hint how exactly to implement this in PHP. Since I'm not very familiar with regular expressions, don't know how to write a function that returns an array of all hashtags in a tweet. So how do I do this, using the following regular expression: #\S*\w

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• vim variable declaration

  - by dorelal

  I added following line of code in .vimrc let g:jslint_status = 'enabled' if exists("jslint_status") echo jstlint_status else echo 'not found' endif Error message E121: Undefined variable: jstlint_status E15: Invalid expression: jstlint_status What am I doing wrong?

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• Regex for files in a directory

  - by n002213f

  Is it possible to use a regular expression to get filenames for files matching a given pattern in a directory without having to manually loop through all the files.

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• What is wrong with this PHP function.

  - by [email protected]

  I am new to PHP and regular expression. I was going thorugh some online examples and came with this example: <?php echo preg_replace_callback('~-([a-z])~', function ($match) { return strtoupper($match[1]); }, 'hello-world'); // outputs helloWorld ?> in php.net but to my surprise it does not work and keep getting error: PHP Parse error: parse error, unexpected T_FUNCTION Why get error ?

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• Negative look ahead java

  - by venu

  I need an expression to capture a string like this "A"[A string that is NOT atleast 5 and atmost 6 digits]"B", In other words capture anything that is NOT the following A[0-9][0-9][0-9][0-9][0-9]B A[0-9][0-9][0-9][0-9][0-9][0-9]B I have tried the negative look ahead regex = "a((?![0-9]{5,6}).)*d" ; But it fails to capture all scenarios. Please help venu

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• Restrict characters used in a string

  - by Jeremy Rudd

  How do I restrict a string to whitelisted characters? // "HOW am I to understand; this is, BAD" $str = restrictTo($str,"0-9a-z,. "); // " am I to understand this is, " Is there an inbuilt function in PHP that does something close? I can't formulate a regular expression for this though :(

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• SSRS - Sort table based on column value

  - by Ehsan

  I am trying to sort the following table: hYear hSale ------------------------------------ [year] =Count(Fields!sale.Value) The table only has one row group (year) and no column group. I'd like to: -initially sort the table based on the calculated value; is it possible? -add interactive sort to calculated column based on the value. I assume I should sort 'Detail rows', but what will be the sort expression?

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• Reflection problem - Type Safety Warning

  - by jax

  Class<? extends Algorithm> alg = AlgorithmAllFrom9AndLastFrom10Impl.class Constructor<Algorithm> c = alg.getConstructors()[0]; For "alg.getConstructors()[0];" I am getting a warning in eclipse Type safety: The expression of type Constructor needs unchecked conversion to conform to Constructor How do I fix this?

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• Function of: if(/(file|http).*/.test(url)) { }

  - by WmasterJ

  I am wondering what this technique is called and what it does. It seems to be validating some regular expression on the variable url. I am customizing another persons code: var url = document.getElementById("editorURL").value; if(/(file|http).*/.test(url)) { } Maybe someone has a link to an article that explains this a bit more in-depth?

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• Change a regexp in application.js from rails

  - by Markus

  I wand to change the regular expression in my application.js file from within a rails controller. Is that possible?

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• Abstract over X

  - by Bruno Bieth

  Sorry for this english related question but I only came across that expression in the context of IT. What does abstracting over something mean ? For example abstracting over objects or abstracting over classes. Thanks

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• check that int array contains !=0 value using lambda

  - by netmajor

  hey, I have two-dimension array List<List<int>> boardArray How can I enumerate throw this array to check that it contains other value than 0 ? I think about boardArray.Contains and ForEach ,cause it return bool value but I don't have too much experience with lambda expression :/ Please help :)

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• passing Func<TSource, TKey> keySelector error

  - by user338429

  static void Main() { string[] a = { "a", "asd", "bdfsd", "we" }; a = a.OrderBy(fun).ToArray(); } private static int fun(string s) { return s.Length; } its is giving compile time error . I know that we can do this with Lambda expression like this. a.OrderBy(s=>s.Length).ToArray(); but i want to this do by defining different function . What mistake i have done?

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• Converting upper-case string into title-case using Ruby

  - by wsb3383

  Hi, all. I'm trying to convert an all-uppercase string in Ruby into a lower case one, but with each word's first character being upper case. Example: convert "MY STRING HERE" to "My String Here". I know I can use the .downcase method, but that would make everything lower case ("my string here"). I'm scanning all lines in a file and doing this change, so is there a regular expression I can use through ruby to achieve this? Thanks!

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• Linq List contains specific values.

  - by Raffaeu

  I need to know if the List I am working with contains only some specific values. var list = new List<string> { "First", "Second", "Third" }; If I want to know if the List contain at least one item with the value "First" I use the Any keyword: var result = list.Any(l => l == "First"); But how I can write a Linq expression that will return true/false only if the List contains "First" and "Second" values?

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