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How do you build a Singleton in Dart?
The singleton pattern ensures only one instance of a class is ever created. How do I build this in Dart?
15 Answers
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Replace non-numeric with empty string
Quick add on requirement in our project. A field in our DB to hold a phone number is set to only allow 10 characters. So, if I get passed "(913)-444-5555" or anything else, is there a quick way to run a string through some kind of special replace function that I can pass it a set of characters to ...
How to remove line breaks from a file in Java?
...le -- calling replace doesn't change the original String, it returns a new one that's been changed. If you don't assign the result to text, then that new String is lost and garbage collected.
As for getting the newline String for any environment -- that is available by calling System.getProperty("...
Insert Update trigger how to determine if insert or update
...t, Update Trigger on table A which will delete all rows from table B whose one column (say Desc) has values like the value inserted/updated in the table A's column (say Col1). How would I go around writing it so that I can handle both Update and Insert cases. How would I determine if the trigger is ...
How can I add a string to the end of each line in Vim?
...VimGolfer I can't help but add that using I* rather than 0i* will save you one keystroke.
– Jedidiah Hurt
Oct 13 '11 at 21:50
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Password reset for Azure database
... able to log into the 'manage' page as admin, but I forgot the password to one of my databases. I would like to reset the password on that one DB. How do I do that? Microsoft doesn't seem to have a KB on that - at least not one I could find. Thx.
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How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
...efix tree what are the discriminating factors that would lead me to choose one over the other. From my own naive point of view it seems as though using a trie has some extra overhead since it isn't stored as an array but that in terms of run time (assuming the longest key is the longest english word...
Sphinx autodoc is not automatic enough
... Even sphinx-apidoc is pretty rudimentary. For a package with one or two modules, it works okay, but we've got modules nested deeply, and sphinx-apidoc produces some pretty unmanageable output.
– slacy
Apr 27 '12 at 20:35
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Asynchronous Process inside a javascript for loop [duplicate]
...t called when those async operations finish. As such, the loop index is "done" and sitting at its final value for all the callbacks.
To work around this, you have to uniquely save the loop index separately for each callback. In Javascript, the way to do that is to capture it in a function closure...
Best programming based games [closed]
...attle each other. They could move themselves around the arena, look for opponents in different directions, and fire some sort of weapon. Pretty basic stuff, but I remember it quite fondly, even if I can't remember the name.
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