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What's the safest way to iterate through the keys of a Perl hash?
...I have a Perl hash with a bunch of (key, value) pairs, what is the preferred method of iterating through all the keys? I have heard that using each may in some way have unintended side effects. So, is that true, and is one of the two following methods best, or is there a better way?
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How to implement “confirmation” dialog in Jquery UI dialog?
I am try to use JQuery UI Dialog to replace the ugly javascript:alert() box.
In my scenario, I have a list of items, and next to each individual of them, I would have a "delete" button for each of them.
the psuedo html setup will be something follows:
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How do I start PowerShell from Windows Explorer?
Is there a way to start PowerShell in a specific folder from Windows Explorer, e.g. to right-click in a folder and have an option like "Open PowerShell in this Folder"?
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How to remove elements from a generic list while iterating over it?
...g for a better pattern for working with a list of elements which each need processed and then depending on the outcome are removed from the list.
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Check if an image is loaded (no errors) with jQuery
... JavaScript with the jQuery library to manipulate image thumbnails contained in a unordered list. When the image is loaded it does one thing, when an error occurs it does something else. I'm using jQuery load() and error() methods as events. After these events I check the image DOM element for ...
What's better at freeing memory with PHP: unset() or $var = null
I realise the second one avoids the overhead of a function call ( update , is actually a language construct), but it would be interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off t...
Why are Python's 'private' methods not actually private?
Python gives us the ability to create 'private' methods and variables within a class by prepending double underscores to the name, like this: __myPrivateMethod() . How, then, can one explain this
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How to smooth a curve in the right way?
Lets assume we have a dataset which might be given approximately by
9 Answers
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Most efficient way to remove special characters from string
I want to remove all special characters from a string. Allowed characters are A-Z (uppercase or lowercase), numbers (0-9), underscore (_), or the dot sign (.).
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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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