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What is the difference between gsub and sub methods for Ruby Strings
I have been perusing the documentation for String today, and I saw the :sub method, which I'd never noticed before. I've been using :gsub and it appears that they are essentially the same. Can anyone explain the difference to me? Thanks!
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How to remove from a map while iterating it?
How do I remove from a map while iterating it? like:
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How do I specify the Linq OrderBy argument dynamically?
How do I specify the argument passed to orderby using a value I take as a parameter?
11 Answers
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How can I add to List
I have a List which is declared like this :
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How do I get an ISO 8601 date on iOS?
It's easy enough to get the ISO 8601 date string (for example, 2004-02-12T15:19:21+00:00 ) in PHP via date('c') , but how does one get it in Objective-C (iPhone)? Is there a similarly short way to do it?
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Java Hashmap: How to get key from value?
If I have the value "foo" , and a HashMap<String> ftw for which ftw.containsValue("foo") returns true , how can I get the corresponding key? Do I have to loop through the hashmap? What is the best way to do that?
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What is the convention for word separator in Java package names?
How should one separate words in package names? Which of the following are correct?
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Why can I initialize a List like an array in C#?
Today I was surprised to find that in C# I can do:
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Creating instance of type without default constructor in C# using reflection
Take the following class as an example:
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jQuery: checking if the value of a field is null (empty)
Is this a good way to check if the value of a field is null ?
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