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Invalid date format specification in gemspec
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I have fixed this issue by upgrading my RubyGems to 1.8.10 with
gem update --system
Edit: You can also try (as suggested by ZeissS)
gem install rubygems-update
update_rubygems
share...
Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate
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Thanks! So if I want my JPA persistence not to be tied to the Hibernate implementation (i.e. change to EJB3) then I have to use both annotations (to prohibit null in both the field and its column)?
– rapt
Se...
How to escape braces (curly brackets) in a format string in .NET
...ic";
string templateString = $@"<h2>{0}</h2><div>this is my {localVar} template using a {{{{custom tag}}}}</div>";
string result = string.Format(templateString, "String Interpolation");
// OUTPUT: <h2>String Interpolation</h2><div>this is my dynamic templat...
What is Castle Windsor, and why should I care?
I'm a long-time Windows developer, having cut my teeth on win32 and early COM. I've been working with .NET since 2001, so I'm pretty fluent in C# and the CLR. I'd never heard of Castle Windsor until I started participating in Stack Overflow. I've read the Castle Windsor "Getting Started" guide, b...
What's the difference between a Future and a Promise?
... that javadoc extract needs a serious workover by a decent tech author. On my fifth read-through I can just start to appreciate what it's trying to say ... and I come to this with an understanding of futures and promises already in place!
– Beetroot-Beetroot
Ja...
Text vertical alignment in WPF TextBlock
...solution works in lieu of a proper TextVerticalAlignment property and gets my upvote. :)
– Trekkie
Jul 3 '17 at 19:42
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Convert decimal to binary in python [duplicate]
...value]',2), so any way to do the reverse without writing the code to do it myself?
8 Answers
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Android: disabling highlight on listView click
...e the orange highlight that occurs when touching a listView row. So far in my xml I have tried the following:
15 Answers
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Sorting a vector in descending order
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@OfekGila My understanding is that big-O notation is about sets of functions, and notation involving = and + are just conveniences meaning ∈ and ∪. In that case, O(n*log(n)) + O(n) is a convenient notation for O(n*log(n)) ∪ O(n)...
What is the meaning and difference between subject, user and principal?
...ed all three terms and all differed significantly in their usage. This is my take on how the terms should be used but from a practical standpoint, when you are poring over a manual in the middle of the night, the definitions tend to be whatever the vendor or writer say they are. Hopefully though r...