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Rails “validates_uniqueness_of” Case Sensitivity
... If you do not have a database constraint, the insert will succeed and you now have two rows with 'foo' as the name.
See also "Concurrency and integrity" in the validates_uniqueness_of Rails documentation.
From Ruby on Rails 3rd Edition:
...despite its name, validates_uniqueness_of doesn’t ...
console.writeline and System.out.println
...nical difference between console.writeline and System.out.println ?
I know that System.out.println writes to standard output but is this not the same thing as the console?
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Server.UrlEncode vs. HttpUtility.UrlEncode
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" " ==> "%20"
"100% true" ==> "100%%20true" (ok, your url is broken now)
"test A.aspx#anchor B" ==> "test%20A.aspx#anchor%20B"
"test A.aspx?hmm#anchor B" ==> "test%20A.aspx?hmm#anchor B" (note the difference with the previous escape sequence!)
It also has the lovelily specific MSDN d...
What's the concept of and differences between Framebuffer and Renderbuffer in OpenGL?
I'm confused about concept of Framebuffer and Renderbuffer. I know that they're required to render, but I want to understand them before use.
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ACE vs Boost vs POCO [closed]
...and Adaptive Communication Environment (ACE) framework . I would like to know the good and bad of each.
10 Answers
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Declaring an enum within a class
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Nowadays - using C++11 - you can use enum class for this:
enum class Color { RED, BLUE, WHITE };
AFAII this does exactly what you want.
share
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Latex Remove Spaces Between Items in List
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I would also like to add that the nolistsep option is now deprecated, and that its successor is nosep, which "kills all vertical spacing".
– larsac07
May 15 '16 at 18:48
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Use git “log” command in another folder
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wow, and nothing in the man page! What a shame. (ok, now I see it added in 2.7 man page)
– akostadinov
Feb 5 '16 at 9:34
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Init method in Spring Controller (annotation version)
...ize all beans and autowire/inject them there are at least two ways that I know of that will ensure this. I have only testet the second one but I belive both work the same.
If you are using @Bean you can reference by initMethod, like this.
@Configuration
public class BeanConfiguration {
@Bean(i...
What are the differences between Chosen and Select2?
...e ExpressionEngine add-on MX Select Plus (it is how I got here as there is now a competing add-on using Select2).
– notacouch
Jun 10 '13 at 17:20
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