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Show hide fragment in android
...example of my problem.
This simple Fragmentactivity contains 1 button and one listfragment.
10 Answers
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What is the equivalent of “colspan” in an Android TableLayout?
I'm using a TableLayout in Android. Right now I have one TableRow with two items in it, and, below that, a TableRow with one item it it. It renders like this:
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Ruby off the rails
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One of the huge benefits of Ruby is the ability to create DSLs very easily. Ruby allows you to create "business rules" in a natural language way that is usually easy enough for a business analyst to use. Many Ruby apps outsid...
How can I format patch with what I stash away
.... However, since patch files are plain text files themselves, usually what one would do is edit the patch in a text editor to clip out the relevant parts to apply with patch. Alternately, if you're applying the patch into another Git repository, you could apply it all and then selectively git checko...
Returning 'IList' vs 'ICollection' vs 'Collection'
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Generally you should return a type that is as general as possible, i.e. one that knows just enough of the returned data that the consumer needs to use. That way you have greater freedom to change the implementation of the API, without breaking the code that is using it.
Consider also the IEnumer...
Converting string from snake_case to CamelCase in Ruby
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How about this one?
"hello_world".split('_').collect(&:capitalize).join #=> "HelloWorld"
Found in the comments here: Classify a Ruby string
See comment by Wayne Conrad
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Concatenate two string literals
... string literals "Hello" and ",world" are "added" first, hence the error.
One of the first two strings being concatenated must be a std::string object:
const string message = string("Hello") + ",world" + exclam;
Alternatively, you can force the second + to be evaluated first by parenthesizing th...
How to get last N records with activerecord?
... In Rails 4 the query generated by .last() is also optimal as Nick mentioned
– Jimmie Tyrrell
Jun 4 '14 at 6:32
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Batch: Remove file extension
...pands %I to the fully qualified name of
the first one found. If the environment variable name is
not defined or the file is not found by the search,
this modifier expands to the empty string.
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
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On the one hand, throwing exceptions is inherently expensive, because the stack has to be unwound etc.
On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation.
BTW: The correct ...