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How do you discover model attributes in Rails?
I am finding it difficult to easily see what attributes/properties exist on all of my model classes since they are not explicitly defined in my class files.
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What's a quick way to test to see a file exists?
I want to quickly check to see if a file exists in my iPhone app's Documents directory (or any path for that matter). I can enumerate through the directory's files, or I can try to open a specific file. What's the fastest way? I just need to know if the file is there or if it does not exist.
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@Basic(optional = false) vs @Column(nullable = false) in JPA
What's the difference between @Basic(optional = false) and @Column(nullable = false) in JPA persistence?
2 Answers
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How do I apply a diff patch on Windows?
There are plenty of programs out there that can create a diff patch, but I'm having a heck of a time trying to apply one. I'm trying to distribute a patch, and I got a question from a user about how to apply it. So I tried to figure it out on my own and found out that I have no clue, and most of the...
Python Remove last 3 characters of a string
...o removed). That said replace() is probably much faster, so it can be used if, say, the input strings are known to be encoded in ASCII, which only has one space character (I'm using Python 2 terminology, here.)
– Eric O Lebigot
Mar 14 '13 at 1:33
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Revert changes to a file in a commit
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@MerhawiFissehaye : I think git checkout will only revert the changes again to fall back to the state what was in commit. I did 'git add filename ; git commit --amend' to remove the file from commit.
– ViFI
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What are the benefits of dependency injection containers?
.... I also understand benefits of other Spring featureslike AOP, helpers of different kinds, etc. I'm just wondering, what are the benefits of XML configuration such as:
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Difference between “or” and || in Ruby? [duplicate]
What's the difference between the or and || operators in Ruby? Or is it just preference?
8 Answers
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The OutputPath property is not set for this project
...or. Would never have guessed that a single slash could make that big of a difference. Have a Good Answer badge.
– ouflak
May 8 '17 at 7:45
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Available text color classes in Bootstrap
... some text as the title at the navigation bar. I want to give those texts different colors. For this purpose I'm using a separate CSS file, but I want to do this using bootstrap's CSS file.
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