Search Results

Search found 5544 results on 222 pages for 'pattern'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 25/222 | < Previous Page | 21 22 23 24 25 26 27 28 29 30 31 32  | Next Page >

  • Is this a dangerous locking pattern?

    - by Martin
    I have an enumerator written in C#, which looks something like this: try { ReadWriteLock.EnterReadLock(); yield foo; yield bar; yield bash; } finally { ReadWriteLock.ExitReadLock(); } I believe this may be a dangerous locking pattern, as the ReadWriteLock will only be released if the enumeration is complete, otherwise the lock is left hanging and is never released, am I correct? If so, what's the best way to combat this?

    Read the article

  • multi-line pattern matching in pyhon

    - by Horace Ho
    A periodic computer generated message (simplified): Hello user123, - (604)7080900 - 152 - minutes Regards Using python, how can I extract "(604)7080900", "152", "minutes" (i.e. any text following a leading "- " pattern) between the two empty lines (empty line is the \n\n after "Hello user123" and the \n\n before "Regards"). Even better if the result string list are stored in an array. Thanks!

    Read the article

  • Are Maybes a good pattern for scala?

    - by Fred Haslam
    For a while I have been struggling to integrate scala with java methods that might return null. I came up with the following utility which helps a lot: // produce an Option, nulls become None object Maybe { def apply[T](t:T) = if (t==null) None else Some(t) } Maybe(javaClass.getResultCouldBeNull()).map( result => doSomeWork(result) ) I have a few questions about this solution: Is there a better or more standard pattern to use? Am I duplicating something that already exists? Does this functionality have hidden gotchas?

    Read the article

  • VBA regex pattern

    - by KeyMs92
    This is probably a simple problem, but unfortunately I wasn't able to get the results I wanted... Say, I have the following line: "Wouldn't It Be Nice" (B. Wilson/Asher/Love) I would have to look for this pattern: " (<any string>) In order to retrieve: B. Wilson/Asher/Love I tried something like "" (([^))]*)) but it doesn't seem to work. Also, I'd like to use Match.Submatches(0) so that might complicate things a bit because it relies on brackets...

    Read the article

  • Recursively add files by pattern

    - by Michel Krämer
    How do I recursively add files by a pattern (or glob) located in different directories? For example, I'd like to add A/B/C/foo.java and D/E/F/bar.java (and several other java files) with one command: git add '*.java' Unfortunately, that doesn't work as expected.

    Read the article

  • [bash] Escape a string for sed search pattern

    - by Alexander Gladysh
    In my bash script I have an external (received from user) string, which I should use in sed pattern. REPLACE="<funny characters here>" sed "s/KEYWORD/$REPLACE/g" How can I escape the $REPLACE string so it would be safely accepted by sed as a literal replacement? NOTE: The KEYWORD is a dumb substring with no matches etc. It is not supplied by user.

    Read the article

  • Parent child class relationship design pattern

    - by Jeremy
    I have a class which has a list of child items. Is there a design pattern I can copy that I can apply to these classes so that I can access the parent instance from the child, and it enforces rules such as not being able to add the child to multiple parents, etc?

    Read the article

  • Python singleton pattern

    - by Javier Garcia
    Hi, someone can tell me why this is incorrect as a singleton pattern: class preSingleton(object): def __call__(self): return self singleton = preSingleton() a = singleton() b = singleton() print a==b a.var_in_a = 100 b.var_in_b = 'hello' print a.var_in_b print b.var_in_a Edit: The above code prints: True hello 100 thank you very much

    Read the article

  • Makefile generic pattern rule -- xyzzy-en_US.ext2 from xyzzy.ext0

    - by Janne Savukoski
    I can't figure out a way to define a generic pattern rule for the following kind of production with make: require xyzzy-en_US.ext2 from xyzzy.ext0 via xyzzy.ext1. This works: all: xyzzy-en_US.ext2 # to be compiled from xyzzy.ext0 %.ext1 : %.ext0 # produce xyzzy.ext1 %-en_US.ext2 : %.ext1 # produce xyzzy-en_US.ext2 But how to generalize the locale part of the second rule? Or do I need to generate rules for all different locales? Neither of these work: %-??_??.ext2 : %.ext1 # ... %.ext2 : $(@,%-??_??.ext2,%.ext1) # ...

    Read the article

  • Disposable Registry: good pattern?

    - by illdev
    Imagine a: public class Global : IDisposable { private static readonly List<IDisposable> Disposables = new List<IDisposable>(); public void ApplicationStart() { var heavyLifter = new HeavyLifter(); Disposables.Add(heavyLifter); } public void Dispose() { Disposables.ForEach(d => d.Dispose()); } } I am somewhat inexperienced with IDisposable. Is this a viable pattern?

    Read the article

  • Simple but good pattern for EJB

    - by Sara
    What would you suggest as a good and practical but simple pattern for a soloution with: HTML + JSP (as a view/presentation) SERVLETS (controller, request, session-handling) EJB (persistence, businesslogic) MySQL DB And is it necessary to use an own layer of DAO for persistence? I use JPA to persist objects to my DB. Should I withdraw business logic from my EJB? Sources online all tell me different things and confuses me...

    Read the article

  • Php preg_replace pattern help

    - by christian
    I have this text: Lorem ipsum dolor sit {something.something({print.print(param1,param2)},param2)}, consectetur adipiscing elit. Where i need a pattern that can replace everything but: something.something The text something.something can contain [a-zA-Z.] (I am using preg_replace) Here is a site where you can test the code: http://www.spaweditor.com/scripts/regex/index.php

    Read the article

  • Is there a pattern for this?

    - by Timmy
    i have something that requires a matrix of values, similar to pokemon: i have a class object for each of the types, is there a pattern or a good way to implement this, as a middle layer or in the classes?

    Read the article

  • Multilevel asynchronous method call pattern in c#

    - by michajas
    Hi, I have design problem regarding async calls to method. I'd like to know best/good pattern to call async method, which calls another async method, which calls another async method :) In other words, I have WCF service reference created with async methods and I want to call them from another async method which is called by other async method. All this for non blocking GUI. Thanks!

    Read the article

  • Python pattern search in a string

    - by Hulk
    In python if a string contains the following, print valid_str The output of this is Record is positive in tone: It emphasizes "what a child can do and his or her achievements, as opposed to what he or she cannot do," explains the It is useful for progress and achievements during office conferences How to search for the pattern It is useful in the above string and if not found return something. Thanks..

    Read the article

  • Getting pattern string from java SimpleDateFormat

    - by D Lawson
    I have a SimpleDateFormat object that I retrieve from some internationalization utilities. Parsing dates is all fine and good, but I would like to be able show a formatting hint to my users like "MM/dd/yyyy". Is there a way to get the formatting pattern from a SimpleDateFormat object?

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 21 22 23 24 25 26 27 28 29 30 31 32  | Next Page >