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Check if a table exists in Rails
I have a rake task that won't work unless a table exists. I'm working with more than 20 engineers on a website so I want to make sure they have migrated the table before they can do a rake task which will populate that respective table.
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Difference between float and double in php?
I have this code
4 Answers
4
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Difference between a clickable ImageView and ImageButton
I'm just wondering if there is any significant difference between an ImageView that's set to be clickable, compared with an ImageButton ?
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How to get values from IGrouping
I have a question about IGrouping and the Select() method.
4 Answers
4
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How does '20 seconds' work in Scala?
How does the following compile:
2 Answers
2
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Android: TextView automatically truncate and replace last 3 char of String
If a String is longer than the TextView 's width it automatically wraps onto the next line. I can avoid this by using android:singleLine (deprecated) or by setting android:inputType="text" . What I need now is something that replaces the last 3 characters of my String with " ... ". Since I'm...
Ruby on Rails form_for select field with class
I am beating my head against the wall on this one. I want to make a simple select tag using the f.select tag but nothing I do works. I put an example below:
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How to make a class conform to a protocol in Swift?
in Objective-C:
3 Answers
3
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How to create directories recursively in ruby?
I want to store a file as /a/b/c/d.txt, but I do not know if any of these directories exist and need to recursively create them if necessary.
How can one do this in ruby?
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Create module variables in Ruby
Is there any way to create a variable in a module in Ruby that would behave similar to a class variable? What I mean by this is that it would be able to be accessed without initializing an instance of the module, but it can be changed (unlike constants in modules).
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